Merge branch 'bugfix/ble_mesh_split_tinycrypt_v3.3' into 'release/v3.3'

Bugfix/ble mesh split tinycrypt (v3.3)

See merge request espressif/esp-idf!9373

components/bt/CMakeLists.txt

@@ -293,6 +293,7 @@ if(CONFIG_BT_ENABLED)
     if(CONFIG_BLE_MESH)
         list(APPEND COMPONENT_ADD_INCLUDEDIRS
                     "esp_ble_mesh/mesh_common/include"
+                    "esp_ble_mesh/mesh_common/tinycrypt/include"
                     "esp_ble_mesh/mesh_core"
                     "esp_ble_mesh/mesh_core/include"
                     "esp_ble_mesh/mesh_core/storage"
@@ -325,7 +326,21 @@ if(CONFIG_BT_ENABLED)
                     "esp_ble_mesh/btc/btc_ble_mesh_prov.c"
                     "esp_ble_mesh/btc/btc_ble_mesh_sensor_model.c"
                     "esp_ble_mesh/btc/btc_ble_mesh_time_scene_model.c"
-                    "esp_ble_mesh/mesh_common/mesh_aes_encrypt.c"
+                    "esp_ble_mesh/mesh_common/tinycrypt/src/aes_decrypt.c"
+                    "esp_ble_mesh/mesh_common/tinycrypt/src/aes_encrypt.c"
+                    "esp_ble_mesh/mesh_common/tinycrypt/src/cbc_mode.c"
+                    "esp_ble_mesh/mesh_common/tinycrypt/src/ccm_mode.c"
+                    "esp_ble_mesh/mesh_common/tinycrypt/src/cmac_mode.c"
+                    "esp_ble_mesh/mesh_common/tinycrypt/src/ctr_mode.c"
+                    "esp_ble_mesh/mesh_common/tinycrypt/src/ctr_prng.c"
+                    "esp_ble_mesh/mesh_common/tinycrypt/src/ecc_dh.c"
+                    "esp_ble_mesh/mesh_common/tinycrypt/src/ecc_dsa.c"
+                    "esp_ble_mesh/mesh_common/tinycrypt/src/ecc_platform_specific.c"
+                    "esp_ble_mesh/mesh_common/tinycrypt/src/ecc.c"
+                    "esp_ble_mesh/mesh_common/tinycrypt/src/hmac_prng.c"
+                    "esp_ble_mesh/mesh_common/tinycrypt/src/hmac.c"
+                    "esp_ble_mesh/mesh_common/tinycrypt/src/sha256.c"
+                    "esp_ble_mesh/mesh_common/tinycrypt/src/utils.c"
                     "esp_ble_mesh/mesh_common/mesh_atomic.c"
                     "esp_ble_mesh/mesh_common/mesh_buf.c"
                     "esp_ble_mesh/mesh_common/mesh_common.c"

components/bt/component.mk

@@ -139,6 +139,7 @@ endif
 
 ifdef CONFIG_BLE_MESH
 COMPONENT_ADD_INCLUDEDIRS += esp_ble_mesh/mesh_common/include           \
+                             esp_ble_mesh/mesh_common/tinycrypt/include \
                              esp_ble_mesh/mesh_core                     \
                              esp_ble_mesh/mesh_core/include             \
                              esp_ble_mesh/mesh_core/storage             \
@@ -151,6 +152,7 @@ COMPONENT_ADD_INCLUDEDIRS += esp_ble_mesh/mesh_common/include           \
                              esp_ble_mesh/api
 
 COMPONENT_SRCDIRS += esp_ble_mesh/mesh_common               \
+                     esp_ble_mesh/mesh_common/tinycrypt/src \
                      esp_ble_mesh/mesh_core                 \
                      esp_ble_mesh/mesh_core/storage         \
                      esp_ble_mesh/btc                       \

components/bt/esp_ble_mesh/mesh_common/include/mesh_util.h

@@ -186,15 +186,6 @@ const char *bt_hex(const void *buf, size_t len);
 
 void mem_rcopy(u8_t *dst, u8_t const *src, u16_t len);
 
-unsigned int _copy(uint8_t *to, unsigned int to_len,
-                   const uint8_t *from, unsigned int from_len);
-
-void _set(void *to, uint8_t val, unsigned int len);
-
-uint8_t _double_byte(uint8_t a);
-
-int _compare(const uint8_t *a, const uint8_t *b, size_t size);
-
 #ifdef __cplusplus
 }
 #endif

components/bt/esp_ble_mesh/mesh_common/mesh_util.c

@@ -10,9 +10,6 @@
 
 #include "mesh_types.h"
 #include "mesh_util.h"
-#include "mesh_aes_encrypt.h"
-
-#define MASK_TWENTY_SEVEN 0x1b
 
 const char *bt_hex(const void *buf, size_t len)
 {
@@ -45,39 +42,3 @@ void mem_rcopy(u8_t *dst, u8_t const *src, u16_t len)
         *dst++ = *--src;
     }
 }
-
-unsigned int _copy(uint8_t *to, unsigned int to_len,
-                   const uint8_t *from, unsigned int from_len)
-{
-    if (from_len <= to_len) {
-        (void)memcpy(to, from, from_len);
-        return from_len;
-    } else {
-        return TC_CRYPTO_FAIL;
-    }
-}
-
-void _set(void *to, uint8_t val, unsigned int len)
-{
-    (void)memset(to, val, len);
-}
-
-/*
- * Doubles the value of a byte for values up to 127.
- */
-uint8_t _double_byte(uint8_t a)
-{
-    return ((a << 1) ^ ((a >> 7) * MASK_TWENTY_SEVEN));
-}
-
-int _compare(const uint8_t *a, const uint8_t *b, size_t size)
-{
-    const uint8_t *tempa = a;
-    const uint8_t *tempb = b;
-    uint8_t result = 0;
-
-    for (unsigned int i = 0; i < size; i++) {
-        result |= tempa[i] ^ tempb[i];
-    }
-    return result;
-}

components/bt/esp_ble_mesh/mesh_common/include/mesh_aes_encrypt.h → components/bt/esp_ble_mesh/mesh_common/tinycrypt/include/tinycrypt/aes.h

@@ -46,11 +46,10 @@
  *              2) call tc_aes_encrypt/decrypt to process the data.
  */
 
-#ifndef _BLE_MESH_AES_ENCRYPT_H_
-#define _BLE_MESH_AES_ENCRYPT_H_
+#ifndef __BLE_MESH_TC_AES_H__
+#define __BLE_MESH_TC_AES_H__
 
 #include <stdint.h>
-#include <stddef.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -59,41 +58,13 @@ extern "C" {
 #define Nb (4)  /* number of columns (32-bit words) comprising the state */
 #define Nk (4)  /* number of 32-bit words comprising the key */
 #define Nr (10) /* number of rounds */
-#define TC_AES_BLOCK_SIZE   (Nb*Nk)
-#define TC_AES_KEY_SIZE     (Nb*Nk)
-
-#define TC_CRYPTO_SUCCESS   1
-#define TC_CRYPTO_FAIL      0
-
-#define TC_ZERO_BYTE        0x00
-
-/* padding for last message block */
-#define TC_CMAC_PADDING     0x80
+#define TC_AES_BLOCK_SIZE (Nb*Nk)
+#define TC_AES_KEY_SIZE (Nb*Nk)
 
 typedef struct tc_aes_key_sched_struct {
     unsigned int words[Nb * (Nr + 1)];
 } *TCAesKeySched_t;
 
-/* struct tc_cmac_struct represents the state of a CMAC computation */
-typedef struct tc_cmac_struct {
-    /* initialization vector */
-    uint8_t iv[TC_AES_BLOCK_SIZE];
-    /* used if message length is a multiple of block_size bytes */
-    uint8_t K1[TC_AES_BLOCK_SIZE];
-    /* used if message length isn't a multiple block_size bytes */
-    uint8_t K2[TC_AES_BLOCK_SIZE];
-    /* where to put bytes that didn't fill a block */
-    uint8_t leftover[TC_AES_BLOCK_SIZE];
-    /* identifies the encryption key */
-    unsigned int keyid;
-    /* next available leftover location */
-    unsigned int leftover_offset;
-    /* AES key schedule */
-    TCAesKeySched_t sched;
-    /* calls to tc_cmac_update left before re-key */
-    uint64_t countdown;
-} *TCCmacState_t;
-
 /**
  *  @brief Set AES-128 encryption key
  *  Uses key k to initialize s
@@ -152,20 +123,8 @@ int tc_aes128_set_decrypt_key(TCAesKeySched_t s, const uint8_t *k);
 int tc_aes_decrypt(uint8_t *out, const uint8_t *in,
                    const TCAesKeySched_t s);
 
-int tc_cmac_setup(TCCmacState_t s, const uint8_t *key, TCAesKeySched_t sched);
-
-void gf_double(uint8_t *out, uint8_t *in);
-
-int tc_cmac_init(TCCmacState_t s);
-
-int tc_cmac_update(TCCmacState_t s, const uint8_t *data, size_t data_length);
-
-int tc_cmac_final(uint8_t *tag, TCCmacState_t s);
-
-int tc_cmac_erase(TCCmacState_t s);
-
 #ifdef __cplusplus
 }
 #endif
 
-#endif /* _BLE_MESH_AES_ENCRYPT_H_ */
+#endif /* __BLE_MESH_TC_AES_H__ */

components/bt/esp_ble_mesh/mesh_common/tinycrypt/include/tinycrypt/cbc_mode.h

@@ -0,0 +1,151 @@
+/* cbc_mode.h - TinyCrypt interface to a CBC mode implementation */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file
+ * @brief Interface to a CBC mode implementation.
+ *
+ *  Overview: CBC (for "cipher block chaining") mode is a NIST approved mode of
+ *            operation defined in SP 800-38a. It can be used with any block
+ *            cipher to provide confidentiality of strings whose lengths are
+ *            multiples of the block_size of the underlying block cipher.
+ *            TinyCrypt hard codes AES as the block cipher.
+ *
+ *  Security: CBC mode provides data confidentiality given that the maximum
+ *            number q of blocks encrypted under a single key satisfies
+ *            q < 2^63, which is not a practical constraint (it is considered a
+ *            good practice to replace the encryption when q == 2^56). CBC mode
+ *            provides NO data integrity.
+ *
+ *            CBC mode assumes that the IV value input into the
+ *            tc_cbc_mode_encrypt is randomly generated. The TinyCrypt library
+ *            provides HMAC-PRNG module, which generates suitable IVs. Other
+ *            methods for generating IVs are acceptable, provided that the
+ *            values of the IVs generated appear random to any adversary,
+ *            including someone with complete knowledge of the system design.
+ *
+ *            The randomness property on which CBC mode's security depends is
+ *            the unpredictability of the IV. Since it is unpredictable, this
+ *            means in practice that CBC mode requires that the IV is stored
+ *            somehow with the ciphertext in order to recover the plaintext.
+ *
+ *            TinyCrypt CBC encryption prepends the IV to the ciphertext,
+ *            because this affords a more efficient (few buffers) decryption.
+ *            Hence tc_cbc_mode_encrypt assumes the ciphertext buffer is always
+ *            16 bytes larger than the plaintext buffer.
+ *
+ *  Requires: AES-128
+ *
+ *  Usage:    1) call tc_cbc_mode_encrypt to encrypt data.
+ *
+ *            2) call tc_cbc_mode_decrypt to decrypt data.
+ *
+ */
+
+#ifndef __BLE_MESH_TC_CBC_MODE_H__
+#define __BLE_MESH_TC_CBC_MODE_H__
+
+#include <tinycrypt/aes.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ *  @brief CBC encryption procedure
+ *  CBC encrypts inlen bytes of the in buffer into the out buffer
+ *  using the encryption key schedule provided, prepends iv to out
+ *  @return returns TC_CRYPTO_SUCCESS (1)
+ *          returns TC_CRYPTO_FAIL (0) if:
+ *                out == NULL or
+ *                in == NULL or
+ *                ctr == NULL or
+ *                sched == NULL or
+ *                inlen == 0 or
+ *                (inlen % TC_AES_BLOCK_SIZE) != 0 or
+ *                (outlen % TC_AES_BLOCK_SIZE) != 0 or
+ *                outlen != inlen + TC_AES_BLOCK_SIZE
+ *  @note Assumes: - sched has been configured by aes_set_encrypt_key
+ *              - iv contains a 16 byte random string
+ *              - out buffer is large enough to hold the ciphertext + iv
+ *              - out buffer is a contiguous buffer
+ *              - in holds the plaintext and is a contiguous buffer
+ *              - inlen gives the number of bytes in the in buffer
+ *  @param out IN/OUT -- buffer to receive the ciphertext
+ *  @param outlen IN -- length of ciphertext buffer in bytes
+ *  @param in IN -- plaintext to encrypt
+ *  @param inlen IN -- length of plaintext buffer in bytes
+ *  @param iv IN -- the IV for the this encrypt/decrypt
+ *  @param sched IN --  AES key schedule for this encrypt
+ */
+int tc_cbc_mode_encrypt(uint8_t *out, unsigned int outlen, const uint8_t *in,
+                        unsigned int inlen, const uint8_t *iv,
+                        const TCAesKeySched_t sched);
+
+/**
+ * @brief CBC decryption procedure
+ * CBC decrypts inlen bytes of the in buffer into the out buffer
+ * using the provided encryption key schedule
+ * @return returns TC_CRYPTO_SUCCESS (1)
+ *         returns TC_CRYPTO_FAIL (0) if:
+ *                out == NULL or
+ *                in == NULL or
+ *                sched == NULL or
+ *                inlen == 0 or
+ *                outlen == 0 or
+ *                (inlen % TC_AES_BLOCK_SIZE) != 0 or
+ *                (outlen % TC_AES_BLOCK_SIZE) != 0 or
+ *                outlen != inlen + TC_AES_BLOCK_SIZE
+ * @note Assumes:- in == iv + ciphertext, i.e. the iv and the ciphertext are
+ *                contiguous. This allows for a very efficient decryption
+ *                algorithm that would not otherwise be possible
+ *              - sched was configured by aes_set_decrypt_key
+ *              - out buffer is large enough to hold the decrypted plaintext
+ *              and is a contiguous buffer
+ *              - inlen gives the number of bytes in the in buffer
+ * @param out IN/OUT -- buffer to receive decrypted data
+ * @param outlen IN -- length of plaintext buffer in bytes
+ * @param in IN -- ciphertext to decrypt, including IV
+ * @param inlen IN -- length of ciphertext buffer in bytes
+ * @param iv IN -- the IV for the this encrypt/decrypt
+ * @param sched IN --  AES key schedule for this decrypt
+ *
+ */
+int tc_cbc_mode_decrypt(uint8_t *out, unsigned int outlen, const uint8_t *in,
+                        unsigned int inlen, const uint8_t *iv,
+                        const TCAesKeySched_t sched);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BLE_MESH_TC_CBC_MODE_H__ */

components/bt/esp_ble_mesh/mesh_common/tinycrypt/include/tinycrypt/ccm_mode.h

@@ -0,0 +1,211 @@
+/* ccm_mode.h - TinyCrypt interface to a CCM mode implementation */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file
+ * @brief Interface to a CCM mode implementation.
+ *
+ *  Overview: CCM (for "Counter with CBC-MAC") mode is a NIST approved mode of
+ *            operation defined in SP 800-38C.
+ *
+ *            TinyCrypt CCM implementation accepts:
+ *
+ *            1) Both non-empty payload and associated data (it encrypts and
+ *            authenticates the payload and also authenticates the associated
+ *            data);
+ *            2) Non-empty payload and empty associated data (it encrypts and
+ *            authenticates the payload);
+ *            3) Non-empty associated data and empty payload (it degenerates to
+ *            an authentication mode on the associated data).
+ *
+ *            TinyCrypt CCM implementation accepts associated data of any length
+ *            between 0 and (2^16 - 2^8) bytes.
+ *
+ *  Security: The mac length parameter is an important parameter to estimate the
+ *            security against collision attacks (that aim at finding different
+ *            messages that produce the same authentication tag). TinyCrypt CCM
+ *            implementation accepts any even integer between 4 and 16, as
+ *            suggested in SP 800-38C.
+ *
+ *            RFC-3610, which also specifies CCM, presents a few relevant
+ *            security suggestions, such as: it is recommended for most
+ *            applications to use a mac length greater than 8. Besides, the
+ *            usage of the same nonce for two different messages which are
+ *            encrypted with the same key destroys the security of CCM mode.
+ *
+ *  Requires: AES-128
+ *
+ *  Usage:    1) call tc_ccm_config to configure.
+ *
+ *            2) call tc_ccm_mode_encrypt to encrypt data and generate tag.
+ *
+ *            3) call tc_ccm_mode_decrypt to decrypt data and verify tag.
+ */
+
+#ifndef __BLE_MESH_TC_CCM_MODE_H__
+#define __BLE_MESH_TC_CCM_MODE_H__
+
+#include <tinycrypt/aes.h>
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* max additional authenticated size in bytes: 2^16 - 2^8 = 65280 */
+#define TC_CCM_AAD_MAX_BYTES 0xff00
+
+/* max message size in bytes: 2^(8L) = 2^16 = 65536 */
+#define TC_CCM_PAYLOAD_MAX_BYTES 0x10000
+
+/* struct tc_ccm_mode_struct represents the state of a CCM computation */
+typedef struct tc_ccm_mode_struct {
+    TCAesKeySched_t sched; /* AES key schedule */
+    uint8_t *nonce; /* nonce required by CCM */
+    unsigned int mlen; /* mac length in bytes (parameter t in SP-800 38C) */
+} *TCCcmMode_t;
+
+/**
+ * @brief CCM configuration procedure
+ * @return returns TC_CRYPTO_SUCCESS (1)
+ *          returns TC_CRYPTO_FAIL (0) if:
+ *                c == NULL or
+ *                sched == NULL or
+ *                nonce == NULL or
+ *                mlen != {4, 6, 8, 10, 12, 16}
+ * @param c -- CCM state
+ * @param sched IN -- AES key schedule
+ * @param nonce IN - nonce
+ * @param nlen -- nonce length in bytes
+ * @param mlen -- mac length in bytes (parameter t in SP-800 38C)
+ */
+int tc_ccm_config(TCCcmMode_t c, TCAesKeySched_t sched, uint8_t *nonce,
+                  unsigned int nlen, unsigned int mlen);
+
+/**
+ * @brief CCM tag generation and encryption procedure
+ * @return returns TC_CRYPTO_SUCCESS (1)
+ *         returns TC_CRYPTO_FAIL (0) if:
+ *                out == NULL or
+ *                c == NULL or
+ *                ((plen > 0) and (payload == NULL)) or
+ *                ((alen > 0) and (associated_data == NULL)) or
+ *                (alen >= TC_CCM_AAD_MAX_BYTES) or
+ *                (plen >= TC_CCM_PAYLOAD_MAX_BYTES) or
+ *                (olen < plen + maclength)
+ *
+ * @param out OUT -- encrypted data
+ * @param olen IN -- output length in bytes
+ * @param associated_data IN -- associated data
+ * @param alen IN -- associated data length in bytes
+ * @param payload IN -- payload
+ * @param plen IN -- payload length in bytes
+ * @param c IN -- CCM state
+ *
+ * @note: out buffer should be at least (plen + c->mlen) bytes long.
+ *
+ * @note: The sequence b for encryption is formatted as follows:
+ *        b = [FLAGS | nonce | counter ], where:
+ *          FLAGS is 1 byte long
+ *          nonce is 13 bytes long
+ *          counter is 2 bytes long
+ *        The byte FLAGS is composed by the following 8 bits:
+ *          0-2 bits: used to represent the value of q-1
+ *          3-7 btis: always 0's
+ *
+ * @note: The sequence b for authentication is formatted as follows:
+ *        b = [FLAGS | nonce | length(mac length)], where:
+ *          FLAGS is 1 byte long
+ *          nonce is 13 bytes long
+ *          length(mac length) is 2 bytes long
+ *        The byte FLAGS is composed by the following 8 bits:
+ *          0-2 bits: used to represent the value of q-1
+ *          3-5 bits: mac length (encoded as: (mlen-2)/2)
+ *          6: Adata (0 if alen == 0, and 1 otherwise)
+ *          7: always 0
+ */
+int tc_ccm_generation_encryption(uint8_t *out, unsigned int olen,
+                                 const uint8_t *associated_data,
+                                 unsigned int alen, const uint8_t *payload,
+                                 unsigned int plen, TCCcmMode_t c);
+
+/**
+ * @brief CCM decryption and tag verification procedure
+ * @return returns TC_CRYPTO_SUCCESS (1)
+ *         returns TC_CRYPTO_FAIL (0) if:
+ *                out == NULL or
+ *                c == NULL or
+ *                ((plen > 0) and (payload == NULL)) or
+ *                ((alen > 0) and (associated_data == NULL)) or
+ *                (alen >= TC_CCM_AAD_MAX_BYTES) or
+ *                (plen >= TC_CCM_PAYLOAD_MAX_BYTES) or
+ *                (olen < plen - c->mlen)
+ *
+ * @param out OUT -- decrypted data
+ * @param associated_data IN -- associated data
+ * @param alen IN -- associated data length in bytes
+ * @param payload IN -- payload
+ * @param plen IN -- payload length in bytes
+ * @param c IN -- CCM state
+ *
+ * @note: out buffer should be at least (plen - c->mlen) bytes long.
+ *
+ * @note: The sequence b for encryption is formatted as follows:
+ *        b = [FLAGS | nonce | counter ], where:
+ *          FLAGS is 1 byte long
+ *          nonce is 13 bytes long
+ *          counter is 2 bytes long
+ *        The byte FLAGS is composed by the following 8 bits:
+ *          0-2 bits: used to represent the value of q-1
+ *          3-7 btis: always 0's
+ *
+ * @note: The sequence b for authentication is formatted as follows:
+ *        b = [FLAGS | nonce | length(mac length)], where:
+ *          FLAGS is 1 byte long
+ *          nonce is 13 bytes long
+ *          length(mac length) is 2 bytes long
+ *        The byte FLAGS is composed by the following 8 bits:
+ *          0-2 bits: used to represent the value of q-1
+ *          3-5 bits: mac length (encoded as: (mlen-2)/2)
+ *          6: Adata (0 if alen == 0, and 1 otherwise)
+ *          7: always 0
+ */
+int tc_ccm_decryption_verification(uint8_t *out, unsigned int olen,
+                                   const uint8_t *associated_data,
+                                   unsigned int alen, const uint8_t *payload, unsigned int plen,
+                                   TCCcmMode_t c);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BLE_MESH_TC_CCM_MODE_H__ */

components/bt/esp_ble_mesh/mesh_common/tinycrypt/include/tinycrypt/cmac_mode.h

@@ -0,0 +1,194 @@
+/*  cmac_mode.h -- interface to a CMAC implementation */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file
+ * @brief Interface to a CMAC implementation.
+ *
+ *  Overview: CMAC is defined NIST in SP 800-38B, and is the standard algorithm
+ *            for computing a MAC using a block cipher. It can compute the MAC
+ *            for a byte string of any length. It is distinguished from CBC-MAC
+ *            in the processing of the final message block; CMAC uses a
+ *            different technique to compute the final message block is full
+ *            size or only partial, while CBC-MAC uses the same technique for
+ *            both. This difference permits CMAC to be applied to variable
+ *            length messages, while all messages authenticated by CBC-MAC must
+ *            be the same length.
+ *
+ *  Security: AES128-CMAC mode of operation offers 64 bits of security against
+ *            collision attacks. Note however that an external attacker cannot
+ *            generate the tags him/herself without knowing the MAC key. In this
+ *            sense, to attack the collision property of AES128-CMAC, an
+ *            external attacker would need the cooperation of the legal user to
+ *            produce an exponentially high number of tags (e.g. 2^64) to
+ *            finally be able to look for collisions and benefit from them. As
+ *            an extra precaution, the current implementation allows to at most
+ *            2^48 calls to the tc_cmac_update function before re-calling
+ *            tc_cmac_setup (allowing a new key to be set), as suggested in
+ *            Appendix B of SP 800-38B.
+ *
+ *  Requires: AES-128
+ *
+ *  Usage:   This implementation provides a "scatter-gather" interface, so that
+ *           the CMAC value can be computed incrementally over a message
+ *           scattered in different segments throughout memory. Experience shows
+ *           this style of interface tends to minimize the burden of programming
+ *           correctly. Like all symmetric key operations, it is session
+ *           oriented.
+ *
+ *           To begin a CMAC session, use tc_cmac_setup to initialize a struct
+ *           tc_cmac_struct with encryption key and buffer. Our implementation
+ *           always assume that the AES key to be the same size as the block
+ *           cipher block size. Once setup, this data structure can be used for
+ *           many CMAC computations.
+ *
+ *           Once the state has been setup with a key, computing the CMAC of
+ *           some data requires three steps:
+ *
+ *           (1) first use tc_cmac_init to initialize a new CMAC computation.
+ *           (2) next mix all of the data into the CMAC computation state using
+ *               tc_cmac_update. If all of the data resides in a single data
+ *               segment then only one tc_cmac_update call is needed; if data
+ *               is scattered throughout memory in n data segments, then n calls
+ *               will be needed. CMAC IS ORDER SENSITIVE, to be able to detect
+ *               attacks that swap bytes, so the order in which data is mixed
+ *               into the state is critical!
+ *           (3) Once all of the data for a message has been mixed, use
+ *               tc_cmac_final to compute the CMAC tag value.
+ *
+ *           Steps (1)-(3) can be repeated as many times as you want to CMAC
+ *           multiple messages. A practical limit is 2^48 1K messages before you
+ *           have to change the key.
+ *
+ *           Once you are done computing CMAC with a key, it is a good idea to
+ *           destroy the state so an attacker cannot recover the key; use
+ *           tc_cmac_erase to accomplish this.
+ */
+
+#ifndef __BLE_MESH_TC_CMAC_MODE_H__
+#define __BLE_MESH_TC_CMAC_MODE_H__
+
+#include <tinycrypt/aes.h>
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* padding for last message block */
+#define TC_CMAC_PADDING 0x80
+
+/* struct tc_cmac_struct represents the state of a CMAC computation */
+typedef struct tc_cmac_struct {
+    /* initialization vector */
+    uint8_t iv[TC_AES_BLOCK_SIZE];
+    /* used if message length is a multiple of block_size bytes */
+    uint8_t K1[TC_AES_BLOCK_SIZE];
+    /* used if message length isn't a multiple block_size bytes */
+    uint8_t K2[TC_AES_BLOCK_SIZE];
+    /* where to put bytes that didn't fill a block */
+    uint8_t leftover[TC_AES_BLOCK_SIZE];
+    /* identifies the encryption key */
+    unsigned int keyid;
+    /* next available leftover location */
+    unsigned int leftover_offset;
+    /* AES key schedule */
+    TCAesKeySched_t sched;
+    /* calls to tc_cmac_update left before re-key */
+    uint64_t countdown;
+} *TCCmacState_t;
+
+/**
+ * @brief Configures the CMAC state to use the given AES key
+ * @return returns TC_CRYPTO_SUCCESS (1) after having configured the CMAC state
+ *         returns TC_CRYPTO_FAIL (0) if:
+ *              s == NULL or
+ *              key == NULL
+ *
+ * @param s IN/OUT -- the state to set up
+ * @param key IN -- the key to use
+ * @param sched IN -- AES key schedule
+ */
+int tc_cmac_setup(TCCmacState_t s, const uint8_t *key,
+                  TCAesKeySched_t sched);
+
+/**
+ * @brief Erases the CMAC state
+ * @return returns TC_CRYPTO_SUCCESS (1) after having configured the CMAC state
+ *         returns TC_CRYPTO_FAIL (0) if:
+ *              s == NULL
+ *
+ * @param s IN/OUT -- the state to erase
+ */
+int tc_cmac_erase(TCCmacState_t s);
+
+/**
+ * @brief Initializes a new CMAC computation
+ * @return returns TC_CRYPTO_SUCCESS (1) after having initialized the CMAC state
+ *         returns TC_CRYPTO_FAIL (0) if:
+ *              s == NULL
+ *
+ * @param s IN/OUT -- the state to initialize
+ */
+int tc_cmac_init(TCCmacState_t s);
+
+/**
+ * @brief Incrementally computes CMAC over the next data segment
+ * @return returns TC_CRYPTO_SUCCESS (1) after successfully updating the CMAC state
+ *         returns TC_CRYPTO_FAIL (0) if:
+ *              s == NULL or
+ *              if data == NULL when dlen > 0
+ *
+ * @param s IN/OUT -- the CMAC state
+ * @param data IN -- the next data segment to MAC
+ * @param dlen IN -- the length of data in bytes
+ */
+int tc_cmac_update(TCCmacState_t s, const uint8_t *data, size_t dlen);
+
+/**
+ * @brief Generates the tag from the CMAC state
+ * @return returns TC_CRYPTO_SUCCESS (1) after successfully generating the tag
+ *         returns TC_CRYPTO_FAIL (0) if:
+ *              tag == NULL or
+ *              s == NULL
+ *
+ * @param tag OUT -- the CMAC tag
+ * @param s IN -- CMAC state
+ */
+int tc_cmac_final(uint8_t *tag, TCCmacState_t s);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BLE_MESH_TC_CMAC_MODE_H__ */

components/bt/esp_ble_mesh/mesh_common/tinycrypt/include/tinycrypt/constants.h

@@ -0,0 +1,61 @@
+/* constants.h - TinyCrypt interface to constants */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file
+ * @brief -- Interface to constants.
+ *
+ */
+
+#ifndef __BLE_MESH_TC_CONSTANTS_H__
+#define __BLE_MESH_TC_CONSTANTS_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdbool.h>
+
+#ifndef NULL
+#define NULL ((void *)0)
+#endif
+
+#define TC_CRYPTO_SUCCESS 1
+#define TC_CRYPTO_FAIL 0
+
+#define TC_ZERO_BYTE 0x00
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BLE_MESH_TC_CONSTANTS_H__ */

components/bt/esp_ble_mesh/mesh_common/tinycrypt/include/tinycrypt/ctr_mode.h

@@ -0,0 +1,108 @@
+/* ctr_mode.h - TinyCrypt interface to CTR mode */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file
+ * @brief Interface to CTR mode.
+ *
+ *  Overview:  CTR (pronounced "counter") mode is a NIST approved mode of
+ *             operation defined in SP 800-38a. It can be used with any
+ *             block cipher to provide confidentiality of strings of any
+ *             length. TinyCrypt hard codes AES128 as the block cipher.
+ *
+ *  Security:  CTR mode achieves confidentiality only if the counter value is
+ *             never reused with a same encryption key. If the counter is
+ *             repeated, than an adversary might be able to defeat the scheme.
+ *
+ *             A usual method to ensure different counter values refers to
+ *             initialize the counter in a given value (0, for example) and
+ *             increases it every time a new block is enciphered. This naturally
+ *             leaves to a limitation on the number q of blocks that can be
+ *             enciphered using a same key: q < 2^(counter size).
+ *
+ *             TinyCrypt uses a counter of 32 bits. This means that after 2^32
+ *             block encryptions, the counter will be reused (thus losing CBC
+ *             security). 2^32 block encryptions should be enough for most of
+ *             applications targeting constrained devices. Applications intended
+ *             to encrypt a larger number of blocks must replace the key after
+ *             2^32 block encryptions.
+ *
+ *             CTR mode provides NO data integrity.
+ *
+ *  Requires: AES-128
+ *
+ *  Usage:     1) call tc_ctr_mode to process the data to encrypt/decrypt.
+ *
+ */
+
+#ifndef __BLE_MESH_TC_CTR_MODE_H__
+#define __BLE_MESH_TC_CTR_MODE_H__
+
+#include <tinycrypt/aes.h>
+#include <tinycrypt/constants.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ *  @brief CTR mode encryption/decryption procedure.
+ *  CTR mode encrypts (or decrypts) inlen bytes from in buffer into out buffer
+ *  @return returns TC_CRYPTO_SUCCESS (1)
+ *          returns TC_CRYPTO_FAIL (0) if:
+ *                out == NULL or
+ *                in == NULL or
+ *                ctr == NULL or
+ *                sched == NULL or
+ *                inlen == 0 or
+ *                outlen == 0 or
+ *                inlen != outlen
+ *  @note Assumes:- The current value in ctr has NOT been used with sched
+ *              - out points to inlen bytes
+ *              - in points to inlen bytes
+ *              - ctr is an integer counter in littleEndian format
+ *              - sched was initialized by aes_set_encrypt_key
+ * @param out OUT -- produced ciphertext (plaintext)
+ * @param outlen IN -- length of ciphertext buffer in bytes
+ * @param in IN -- data to encrypt (or decrypt)
+ * @param inlen IN -- length of input data in bytes
+ * @param ctr IN/OUT -- the current counter value
+ * @param sched IN -- an initialized AES key schedule
+ */
+int tc_ctr_mode(uint8_t *out, unsigned int outlen, const uint8_t *in,
+                unsigned int inlen, uint8_t *ctr, const TCAesKeySched_t sched);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BLE_MESH_TC_CTR_MODE_H__ */

components/bt/esp_ble_mesh/mesh_common/tinycrypt/include/tinycrypt/ctr_prng.h

@@ -0,0 +1,166 @@
+/* ctr_prng.h - TinyCrypt interface to a CTR-PRNG implementation */
+
+/*
+ * Copyright (c) 2016, Chris Morrison
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file
+ * @brief Interface to a CTR-PRNG implementation.
+ *
+ *  Overview:   A pseudo-random number generator (PRNG) generates a sequence
+ *              of numbers that have a distribution close to the one expected
+ *              for a sequence of truly random numbers. The NIST Special
+ *              Publication 800-90A specifies several mechanisms to generate
+ *              sequences of pseudo random numbers, including the CTR-PRNG one
+ *              which is based on AES. TinyCrypt implements CTR-PRNG with
+ *              AES-128.
+ *
+ *  Security:   A cryptographically secure PRNG depends on the existence of an
+ *              entropy source to provide a truly random seed as well as the
+ *              security of the primitives used as the building blocks (AES-128
+ *              in this instance).
+ *
+ *  Requires:   - AES-128
+ *
+ *  Usage:      1) call tc_ctr_prng_init to seed the prng context
+ *
+ *              2) call tc_ctr_prng_reseed to mix in additional entropy into
+ *              the prng context
+ *
+ *              3) call tc_ctr_prng_generate to output the pseudo-random data
+ *
+ *              4) call tc_ctr_prng_uninstantiate to zero out the prng context
+ */
+
+#ifndef __BLE_MESH_TC_CTR_PRNG_H__
+#define __BLE_MESH_TC_CTR_PRNG_H__
+
+#include <tinycrypt/aes.h>
+
+#define TC_CTR_PRNG_RESEED_REQ -1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    /* updated each time another BLOCKLEN_BYTES bytes are produced */
+    uint8_t V[TC_AES_BLOCK_SIZE];
+
+    /* updated whenever the PRNG is reseeded */
+    struct tc_aes_key_sched_struct key;
+
+    /* number of requests since initialization/reseeding */
+    uint64_t reseedCount;
+} TCCtrPrng_t;
+
+
+/**
+ *  @brief CTR-PRNG initialization procedure
+ *  Initializes prng context with entropy and personalization string (if any)
+ *  @return returns TC_CRYPTO_SUCCESS (1)
+ *          returns TC_CRYPTO_FAIL (0) if:
+ *                ctx == NULL,
+ *                entropy == NULL,
+ *                entropyLen < (TC_AES_KEY_SIZE + TC_AES_BLOCK_SIZE)
+ *  @note       Only the first (TC_AES_KEY_SIZE + TC_AES_BLOCK_SIZE) bytes of
+ *              both the entropy and personalization inputs are used -
+ *              supplying additional bytes has no effect.
+ *  @param ctx IN/OUT -- the PRNG context to initialize
+ *  @param entropy IN -- entropy used to seed the PRNG
+ *  @param entropyLen IN -- entropy length in bytes
+ *  @param personalization IN -- personalization string used to seed the PRNG
+ *  (may be null)
+ *  @param plen IN -- personalization length in bytes
+ *
+ */
+int tc_ctr_prng_init(TCCtrPrng_t *const ctx,
+                     uint8_t const *const entropy,
+                     unsigned int entropyLen,
+                     uint8_t const *const personalization,
+                     unsigned int pLen);
+
+/**
+ *  @brief CTR-PRNG reseed procedure
+ *  Mixes entropy and additional_input into the prng context
+ *  @return returns  TC_CRYPTO_SUCCESS (1)
+ *  returns TC_CRYPTO_FAIL (0) if:
+ *          ctx == NULL,
+ *          entropy == NULL,
+ *          entropylen < (TC_AES_KEY_SIZE + TC_AES_BLOCK_SIZE)
+ *  @note It is better to reseed an existing prng context rather than
+ *        re-initialise, so that any existing entropy in the context is
+ *        presereved.  This offers some protection against undetected failures
+ *        of the entropy source.
+ *  @note Assumes tc_ctr_prng_init has been called for ctx
+ *  @param ctx IN/OUT -- the PRNG state
+ *  @param entropy IN -- entropy to mix into the prng
+ *  @param entropylen IN -- length of entropy in bytes
+ *  @param additional_input IN -- additional input to the prng (may be null)
+ *  @param additionallen IN -- additional input length in bytes
+ */
+int tc_ctr_prng_reseed(TCCtrPrng_t *const ctx,
+                       uint8_t const *const entropy,
+                       unsigned int entropyLen,
+                       uint8_t const *const additional_input,
+                       unsigned int additionallen);
+
+/**
+ *  @brief CTR-PRNG generate procedure
+ *  Generates outlen pseudo-random bytes into out buffer, updates prng
+ *  @return returns TC_CRYPTO_SUCCESS (1)
+ *          returns TC_CTR_PRNG_RESEED_REQ (-1) if a reseed is needed
+ *             returns TC_CRYPTO_FAIL (0) if:
+ *                ctx == NULL,
+ *                out == NULL,
+ *                outlen >= 2^16
+ *  @note Assumes tc_ctr_prng_init has been called for ctx
+ *  @param ctx IN/OUT -- the PRNG context
+ *  @param additional_input IN -- additional input to the prng (may be null)
+ *  @param additionallen IN -- additional input length in bytes
+ *  @param out IN/OUT -- buffer to receive output
+ *  @param outlen IN -- size of out buffer in bytes
+ */
+int tc_ctr_prng_generate(TCCtrPrng_t *const ctx,
+                         uint8_t const *const additional_input,
+                         unsigned int additionallen,
+                         uint8_t *const out,
+                         unsigned int outlen);
+
+/**
+ *  @brief CTR-PRNG uninstantiate procedure
+ *  Zeroes the internal state of the supplied prng context
+ *  @return none
+ *  @param ctx IN/OUT -- the PRNG context
+ */
+void tc_ctr_prng_uninstantiate(TCCtrPrng_t *const ctx);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BLE_MESH_TC_CTR_PRNG_H__ */

components/bt/esp_ble_mesh/mesh_common/tinycrypt/include/tinycrypt/ecc.h

@@ -0,0 +1,545 @@
+/* ecc.h - TinyCrypt interface to common ECC functions */
+
+/* Copyright (c) 2014, Kenneth MacKay
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file
+ * @brief -- Interface to common ECC functions.
+ *
+ *  Overview: This software is an implementation of common functions
+ *            necessary to elliptic curve cryptography. This implementation uses
+ *            curve NIST p-256.
+ *
+ *  Security: The curve NIST p-256 provides approximately 128 bits of security.
+ *
+ */
+
+#ifndef __BLE_MESH_TC_UECC_H__
+#define __BLE_MESH_TC_UECC_H__
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Word size (4 bytes considering 32-bits architectures) */
+#define uECC_WORD_SIZE 4
+
+/* setting max number of calls to prng: */
+#ifndef uECC_RNG_MAX_TRIES
+#define uECC_RNG_MAX_TRIES 64
+#endif
+
+/* defining data types to store word and bit counts: */
+typedef int8_t wordcount_t;
+typedef int16_t bitcount_t;
+/* defining data type for comparison result: */
+typedef int8_t cmpresult_t;
+/* defining data type to store ECC coordinate/point in 32bits words: */
+typedef unsigned int uECC_word_t;
+/* defining data type to store an ECC coordinate/point in 64bits words: */
+typedef uint64_t uECC_dword_t;
+
+/* defining masks useful for ecc computations: */
+#define HIGH_BIT_SET 0x80000000
+#define uECC_WORD_BITS 32
+#define uECC_WORD_BITS_SHIFT 5
+#define uECC_WORD_BITS_MASK 0x01F
+
+/* Number of words of 32 bits to represent an element of the the curve p-256: */
+#define NUM_ECC_WORDS 8
+/* Number of bytes to represent an element of the the curve p-256: */
+#define NUM_ECC_BYTES (uECC_WORD_SIZE*NUM_ECC_WORDS)
+
+/* structure that represents an elliptic curve (e.g. p256):*/
+struct uECC_Curve_t;
+typedef const struct uECC_Curve_t *uECC_Curve;
+struct uECC_Curve_t {
+    wordcount_t num_words;
+    wordcount_t num_bytes;
+    bitcount_t num_n_bits;
+    uECC_word_t p[NUM_ECC_WORDS];
+    uECC_word_t n[NUM_ECC_WORDS];
+    uECC_word_t G[NUM_ECC_WORDS * 2];
+    uECC_word_t b[NUM_ECC_WORDS];
+    void (*double_jacobian)(uECC_word_t *X1, uECC_word_t *Y1, uECC_word_t *Z1,
+                            uECC_Curve curve);
+    void (*x_side)(uECC_word_t *result, const uECC_word_t *x, uECC_Curve curve);
+    void (*mmod_fast)(uECC_word_t *result, uECC_word_t *product);
+};
+
+/*
+ * @brief computes doubling of point ion jacobian coordinates, in place.
+ * @param X1 IN/OUT -- x coordinate
+ * @param Y1 IN/OUT -- y coordinate
+ * @param Z1 IN/OUT -- z coordinate
+ * @param curve IN -- elliptic curve
+ */
+void double_jacobian_default(uECC_word_t *X1, uECC_word_t *Y1,
+                             uECC_word_t *Z1, uECC_Curve curve);
+
+/*
+ * @brief Computes x^3 + ax + b. result must not overlap x.
+ * @param result OUT -- x^3 + ax + b
+ * @param x IN -- value of x
+ * @param curve IN -- elliptic curve
+ */
+void x_side_default(uECC_word_t *result, const uECC_word_t *x,
+                    uECC_Curve curve);
+
+/*
+ * @brief Computes result = product % curve_p
+ * from http://www.nsa.gov/ia/_files/nist-routines.pdf
+ * @param result OUT -- product % curve_p
+ * @param product IN -- value to be reduced mod curve_p
+ */
+void vli_mmod_fast_secp256r1(unsigned int *result, unsigned int *product);
+
+/* Bytes to words ordering: */
+#define BYTES_TO_WORDS_8(a, b, c, d, e, f, g, h) 0x##d##c##b##a, 0x##h##g##f##e
+#define BYTES_TO_WORDS_4(a, b, c, d) 0x##d##c##b##a
+#define BITS_TO_WORDS(num_bits) \
+    ((num_bits + ((uECC_WORD_SIZE * 8) - 1)) / (uECC_WORD_SIZE * 8))
+#define BITS_TO_BYTES(num_bits) ((num_bits + 7) / 8)
+
+/* definition of curve NIST p-256: */
+static const struct uECC_Curve_t curve_secp256r1 = {
+    NUM_ECC_WORDS,
+    NUM_ECC_BYTES,
+    256, /* num_n_bits */ {
+        BYTES_TO_WORDS_8(FF, FF, FF, FF, FF, FF, FF, FF),
+        BYTES_TO_WORDS_8(FF, FF, FF, FF, 00, 00, 00, 00),
+        BYTES_TO_WORDS_8(00, 00, 00, 00, 00, 00, 00, 00),
+        BYTES_TO_WORDS_8(01, 00, 00, 00, FF, FF, FF, FF)
+    }, {
+        BYTES_TO_WORDS_8(51, 25, 63, FC, C2, CA, B9, F3),
+        BYTES_TO_WORDS_8(84, 9E, 17, A7, AD, FA, E6, BC),
+        BYTES_TO_WORDS_8(FF, FF, FF, FF, FF, FF, FF, FF),
+        BYTES_TO_WORDS_8(00, 00, 00, 00, FF, FF, FF, FF)
+    }, {
+        BYTES_TO_WORDS_8(96, C2, 98, D8, 45, 39, A1, F4),
+        BYTES_TO_WORDS_8(A0, 33, EB, 2D, 81, 7D, 03, 77),
+        BYTES_TO_WORDS_8(F2, 40, A4, 63, E5, E6, BC, F8),
+        BYTES_TO_WORDS_8(47, 42, 2C, E1, F2, D1, 17, 6B),
+
+        BYTES_TO_WORDS_8(F5, 51, BF, 37, 68, 40, B6, CB),
+        BYTES_TO_WORDS_8(CE, 5E, 31, 6B, 57, 33, CE, 2B),
+        BYTES_TO_WORDS_8(16, 9E, 0F, 7C, 4A, EB, E7, 8E),
+        BYTES_TO_WORDS_8(9B, 7F, 1A, FE, E2, 42, E3, 4F)
+    }, {
+        BYTES_TO_WORDS_8(4B, 60, D2, 27, 3E, 3C, CE, 3B),
+        BYTES_TO_WORDS_8(F6, B0, 53, CC, B0, 06, 1D, 65),
+        BYTES_TO_WORDS_8(BC, 86, 98, 76, 55, BD, EB, B3),
+        BYTES_TO_WORDS_8(E7, 93, 3A, AA, D8, 35, C6, 5A)
+    },
+    &double_jacobian_default,
+    &x_side_default,
+    &vli_mmod_fast_secp256r1
+};
+
+uECC_Curve uECC_secp256r1(void);
+
+/*
+ * @brief Generates a random integer in the range 0 < random < top.
+ * Both random and top have num_words words.
+ * @param random OUT -- random integer in the range 0 < random < top
+ * @param top IN -- upper limit
+ * @param num_words IN -- number of words
+ * @return a random integer in the range 0 < random < top
+ */
+int uECC_generate_random_int(uECC_word_t *random, const uECC_word_t *top,
+                             wordcount_t num_words);
+
+
+/* uECC_RNG_Function type
+ * The RNG function should fill 'size' random bytes into 'dest'. It should
+ * return 1 if 'dest' was filled with random data, or 0 if the random data could
+ * not be generated. The filled-in values should be either truly random, or from
+ * a cryptographically-secure PRNG.
+ *
+ * A correctly functioning RNG function must be set (using uECC_set_rng())
+ * before calling uECC_make_key() or uECC_sign().
+ *
+ * Setting a correctly functioning RNG function improves the resistance to
+ * side-channel attacks for uECC_shared_secret().
+ *
+ * A correct RNG function is set by default. If you are building on another
+ * POSIX-compliant system that supports /dev/random or /dev/urandom, you can
+ * define uECC_POSIX to use the predefined RNG.
+ */
+typedef int(*uECC_RNG_Function)(uint8_t *dest, unsigned int size);
+
+/*
+ * @brief Set the function that will be used to generate random bytes. The RNG
+ * function should return 1 if the random data was generated, or 0 if the random
+ * data could not be generated.
+ *
+ * @note On platforms where there is no predefined RNG function, this must be
+ * called before uECC_make_key() or uECC_sign() are used.
+ *
+ * @param rng_function IN -- function that will be used to generate random bytes
+ */
+void uECC_set_rng(uECC_RNG_Function rng_function);
+
+/*
+ * @brief provides current uECC_RNG_Function.
+ * @return Returns the function that will be used to generate random bytes.
+ */
+uECC_RNG_Function uECC_get_rng(void);
+
+/*
+ * @brief computes the size of a private key for the curve in bytes.
+ * @param curve IN -- elliptic curve
+ * @return size of a private key for the curve in bytes.
+ */
+int uECC_curve_private_key_size(uECC_Curve curve);
+
+/*
+ * @brief computes the size of a public key for the curve in bytes.
+ * @param curve IN -- elliptic curve
+ * @return the size of a public key for the curve in bytes.
+ */
+int uECC_curve_public_key_size(uECC_Curve curve);
+
+/*
+ * @brief Compute the corresponding public key for a private key.
+ * @param private_key IN -- The private key to compute the public key for
+ * @param public_key OUT -- Will be filled in with the corresponding public key
+ * @param curve
+ * @return Returns 1 if key was computed successfully, 0 if an error occurred.
+ */
+int uECC_compute_public_key(const uint8_t *private_key,
+                            uint8_t *public_key, uECC_Curve curve);
+
+/*
+ * @brief Compute public-key.
+ * @return corresponding public-key.
+ * @param result OUT -- public-key
+ * @param private_key IN -- private-key
+ * @param curve IN -- elliptic curve
+ */
+uECC_word_t EccPoint_compute_public_key(uECC_word_t *result,
+                                        uECC_word_t *private_key, uECC_Curve curve);
+
+/*
+ * @brief Regularize the bitcount for the private key so that attackers cannot
+ * use a side channel attack to learn the number of leading zeros.
+ * @return Regularized k
+ * @param k IN -- private-key
+ * @param k0 IN/OUT -- regularized k
+ * @param k1 IN/OUT -- regularized k
+ * @param curve IN -- elliptic curve
+ */
+uECC_word_t regularize_k(const uECC_word_t *const k, uECC_word_t *k0,
+                         uECC_word_t *k1, uECC_Curve curve);
+
+/*
+ * @brief Point multiplication algorithm using Montgomery's ladder with co-Z
+ * coordinates. See http://eprint.iacr.org/2011/338.pdf.
+ * @note Result may overlap point.
+ * @param result OUT -- returns scalar*point
+ * @param point IN -- elliptic curve point
+ * @param scalar IN -- scalar
+ * @param initial_Z IN -- initial value for z
+ * @param num_bits IN -- number of bits in scalar
+ * @param curve IN -- elliptic curve
+ */
+void EccPoint_mult(uECC_word_t *result, const uECC_word_t *point,
+                   const uECC_word_t *scalar, const uECC_word_t *initial_Z,
+                   bitcount_t num_bits, uECC_Curve curve);
+
+/*
+ * @brief Constant-time comparison to zero - secure way to compare long integers
+ * @param vli IN -- very long integer
+ * @param num_words IN -- number of words in the vli
+ * @return 1 if vli == 0, 0 otherwise.
+ */
+uECC_word_t uECC_vli_isZero(const uECC_word_t *vli, wordcount_t num_words);
+
+/*
+ * @brief Check if 'point' is the point at infinity
+ * @param point IN -- elliptic curve point
+ * @param curve IN -- elliptic curve
+ * @return if 'point' is the point at infinity, 0 otherwise.
+ */
+uECC_word_t EccPoint_isZero(const uECC_word_t *point, uECC_Curve curve);
+
+/*
+ * @brief computes the sign of left - right, in constant time.
+ * @param left IN -- left term to be compared
+ * @param right IN -- right term to be compared
+ * @param num_words IN -- number of words
+ * @return the sign of left - right
+ */
+cmpresult_t uECC_vli_cmp(const uECC_word_t *left, const uECC_word_t *right,
+                         wordcount_t num_words);
+
+/*
+ * @brief computes sign of left - right, not in constant time.
+ * @note should not be used if inputs are part of a secret
+ * @param left IN -- left term to be compared
+ * @param right IN -- right term to be compared
+ * @param num_words IN -- number of words
+ * @return the sign of left - right
+ */
+cmpresult_t uECC_vli_cmp_unsafe(const uECC_word_t *left, const uECC_word_t *right,
+                                wordcount_t num_words);
+
+/*
+ * @brief Computes result = (left - right) % mod.
+ * @note Assumes that (left < mod) and (right < mod), and that result does not
+ * overlap mod.
+ * @param result OUT -- (left - right) % mod
+ * @param left IN -- leftright term in modular subtraction
+ * @param right IN -- right term in modular subtraction
+ * @param mod IN -- mod
+ * @param num_words IN -- number of words
+ */
+void uECC_vli_modSub(uECC_word_t *result, const uECC_word_t *left,
+                     const uECC_word_t *right, const uECC_word_t *mod,
+                     wordcount_t num_words);
+
+/*
+ * @brief Computes P' = (x1', y1', Z3), P + Q = (x3, y3, Z3) or
+ * P => P', Q => P + Q
+ * @note assumes Input P = (x1, y1, Z), Q = (x2, y2, Z)
+ * @param X1 IN -- x coordinate of P
+ * @param Y1 IN -- y coordinate of P
+ * @param X2 IN -- x coordinate of Q
+ * @param Y2 IN -- y coordinate of Q
+ * @param curve IN -- elliptic curve
+ */
+void XYcZ_add(uECC_word_t *X1, uECC_word_t *Y1, uECC_word_t *X2,
+              uECC_word_t *Y2, uECC_Curve curve);
+
+/*
+ * @brief Computes (x1 * z^2, y1 * z^3)
+ * @param X1 IN -- previous x1 coordinate
+ * @param Y1 IN -- previous y1 coordinate
+ * @param Z IN -- z value
+ * @param curve IN -- elliptic curve
+ */
+void apply_z(uECC_word_t *X1, uECC_word_t *Y1, const uECC_word_t *const Z,
+             uECC_Curve curve);
+
+/*
+ * @brief Check if bit is set.
+ * @return Returns nonzero if bit 'bit' of vli is set.
+ * @warning It is assumed that the value provided in 'bit' is within the
+ * boundaries of the word-array 'vli'.
+ * @note The bit ordering layout assumed for vli is: {31, 30, ..., 0},
+ * {63, 62, ..., 32}, {95, 94, ..., 64}, {127, 126,..., 96} for a vli consisting
+ * of 4 uECC_word_t elements.
+ */
+uECC_word_t uECC_vli_testBit(const uECC_word_t *vli, bitcount_t bit);
+
+/*
+ * @brief Computes result = product % mod, where product is 2N words long.
+ * @param result OUT -- product % mod
+ * @param mod IN -- module
+ * @param num_words IN -- number of words
+ * @warning Currently only designed to work for curve_p or curve_n.
+ */
+void uECC_vli_mmod(uECC_word_t *result, uECC_word_t *product,
+                   const uECC_word_t *mod, wordcount_t num_words);
+
+/*
+ * @brief Computes modular product (using curve->mmod_fast)
+ * @param result OUT -- (left * right) mod % curve_p
+ * @param left IN -- left term in product
+ * @param right IN -- right term in product
+ * @param curve IN -- elliptic curve
+ */
+void uECC_vli_modMult_fast(uECC_word_t *result, const uECC_word_t *left,
+                           const uECC_word_t *right, uECC_Curve curve);
+
+/*
+ * @brief Computes result = left - right.
+ * @note Can modify in place.
+ * @param result OUT -- left - right
+ * @param left IN -- left term in subtraction
+ * @param right IN -- right term in subtraction
+ * @param num_words IN -- number of words
+ * @return borrow
+ */
+uECC_word_t uECC_vli_sub(uECC_word_t *result, const uECC_word_t *left,
+                         const uECC_word_t *right, wordcount_t num_words);
+
+/*
+ * @brief Constant-time comparison function(secure way to compare long ints)
+ * @param left IN -- left term in comparison
+ * @param right IN -- right term in comparison
+ * @param num_words IN -- number of words
+ * @return Returns 0 if left == right, 1 otherwise.
+ */
+uECC_word_t uECC_vli_equal(const uECC_word_t *left, const uECC_word_t *right,
+                           wordcount_t num_words);
+
+/*
+ * @brief Computes (left * right) % mod
+ * @param result OUT -- (left * right) % mod
+ * @param left IN -- left term in product
+ * @param right IN -- right term in product
+ * @param mod IN -- mod
+ * @param num_words IN -- number of words
+ */
+void uECC_vli_modMult(uECC_word_t *result, const uECC_word_t *left,
+                      const uECC_word_t *right, const uECC_word_t *mod,
+                      wordcount_t num_words);
+
+/*
+ * @brief Computes (1 / input) % mod
+ * @note All VLIs are the same size.
+ * @note See "Euclid's GCD to Montgomery Multiplication to the Great Divide"
+ * @param result OUT -- (1 / input) % mod
+ * @param input IN -- value to be modular inverted
+ * @param mod IN -- mod
+ * @param num_words -- number of words
+ */
+void uECC_vli_modInv(uECC_word_t *result, const uECC_word_t *input,
+                     const uECC_word_t *mod, wordcount_t num_words);
+
+/*
+ * @brief Sets dest = src.
+ * @param dest OUT -- destination buffer
+ * @param src IN --  origin buffer
+ * @param num_words IN -- number of words
+ */
+void uECC_vli_set(uECC_word_t *dest, const uECC_word_t *src,
+                  wordcount_t num_words);
+
+/*
+ * @brief Computes (left + right) % mod.
+ * @note Assumes that (left < mod) and right < mod), and that result does not
+ * overlap mod.
+ * @param result OUT -- (left + right) % mod.
+ * @param left IN -- left term in addition
+ * @param right IN -- right term in addition
+ * @param mod IN -- mod
+ * @param num_words IN -- number of words
+ */
+void uECC_vli_modAdd(uECC_word_t *result,  const uECC_word_t *left,
+                     const uECC_word_t *right, const uECC_word_t *mod,
+                     wordcount_t num_words);
+
+/*
+ * @brief Counts the number of bits required to represent vli.
+ * @param vli IN -- very long integer
+ * @param max_words IN -- number of words
+ * @return number of bits in given vli
+ */
+bitcount_t uECC_vli_numBits(const uECC_word_t *vli,
+                            const wordcount_t max_words);
+
+/*
+ * @brief Erases (set to 0) vli
+ * @param vli IN -- very long integer
+ * @param num_words IN -- number of words
+ */
+void uECC_vli_clear(uECC_word_t *vli, wordcount_t num_words);
+
+/*
+ * @brief check if it is a valid point in the curve
+ * @param point IN -- point to be checked
+ * @param curve IN -- elliptic curve
+ * @return 0 if point is valid
+ * @exception returns -1 if it is a point at infinity
+ * @exception returns -2 if x or y is smaller than p,
+ * @exception returns -3 if y^2 != x^3 + ax + b.
+ */
+int uECC_valid_point(const uECC_word_t *point, uECC_Curve curve);
+
+/*
+ * @brief Check if a public key is valid.
+ * @param public_key IN -- The public key to be checked.
+ * @return returns 0 if the public key is valid
+ * @exception returns -1 if it is a point at infinity
+ * @exception returns -2 if x or y is smaller than p,
+ * @exception returns -3 if y^2 != x^3 + ax + b.
+ * @exception returns -4 if public key is the group generator.
+ *
+ * @note Note that you are not required to check for a valid public key before
+ * using any other uECC functions. However, you may wish to avoid spending CPU
+ * time computing a shared secret or verifying a signature using an invalid
+ * public key.
+ */
+int uECC_valid_public_key(const uint8_t *public_key, uECC_Curve curve);
+
+/*
+ * @brief Converts an integer in uECC native format to big-endian bytes.
+ * @param bytes OUT -- bytes representation
+ * @param num_bytes IN -- number of bytes
+ * @param native IN -- uECC native representation
+ */
+void uECC_vli_nativeToBytes(uint8_t *bytes, int num_bytes,
+                            const unsigned int *native);
+
+/*
+ * @brief Converts big-endian bytes to an integer in uECC native format.
+ * @param native OUT -- uECC native representation
+ * @param bytes IN -- bytes representation
+ * @param num_bytes IN -- number of bytes
+ */
+void uECC_vli_bytesToNative(unsigned int *native, const uint8_t *bytes,
+                            int num_bytes);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BLE_MESH_TC_UECC_H__ */

components/bt/esp_ble_mesh/mesh_common/tinycrypt/include/tinycrypt/ecc_dh.h

@@ -0,0 +1,131 @@
+/* ecc_dh.h - TinyCrypt interface to EC-DH implementation */
+
+/*
+ * Copyright (c) 2014, Kenneth MacKay
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file
+ * @brief -- Interface to EC-DH implementation.
+ *
+ *  Overview: This software is an implementation of EC-DH. This implementation
+ *            uses curve NIST p-256.
+ *
+ *  Security: The curve NIST p-256 provides approximately 128 bits of security.
+ */
+
+#ifndef __BLE_MESH_TC_ECC_DH_H__
+#define __BLE_MESH_TC_ECC_DH_H__
+
+#include <tinycrypt/ecc.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Create a public/private key pair.
+ * @return returns TC_CRYPTO_SUCCESS (1) if the key pair was generated successfully
+ *         returns TC_CRYPTO_FAIL (0) if error while generating key pair
+ *
+ * @param p_public_key OUT -- Will be filled in with the public key. Must be at
+ * least 2 * the curve size (in bytes) long. For curve secp256r1, p_public_key
+ * must be 64 bytes long.
+ * @param p_private_key OUT -- Will be filled in with the private key. Must be as
+ * long as the curve order (for secp256r1, p_private_key must be 32 bytes long).
+ *
+ * @note side-channel countermeasure: algorithm strengthened against timing
+ * attack.
+ * @warning A cryptographically-secure PRNG function must be set (using
+ * uECC_set_rng()) before calling uECC_make_key().
+ */
+int uECC_make_key(uint8_t *p_public_key, uint8_t *p_private_key, uECC_Curve curve);
+
+#ifdef ENABLE_TESTS
+
+/**
+ * @brief Create a public/private key pair given a specific d.
+ *
+ * @note THIS FUNCTION SHOULD BE CALLED ONLY FOR TEST PURPOSES. Refer to
+ * uECC_make_key() function for real applications.
+ */
+int uECC_make_key_with_d(uint8_t *p_public_key, uint8_t *p_private_key,
+                         unsigned int *d, uECC_Curve curve);
+#endif
+
+/**
+ * @brief Compute a shared secret given your secret key and someone else's
+ * public key.
+ * @return returns TC_CRYPTO_SUCCESS (1) if the shared secret was computed successfully
+ *         returns TC_CRYPTO_FAIL (0) otherwise
+ *
+ * @param p_secret OUT -- Will be filled in with the shared secret value. Must be
+ * the same size as the curve size (for curve secp256r1, secret must be 32 bytes
+ * long.
+ * @param p_public_key IN -- The public key of the remote party.
+ * @param p_private_key IN -- Your private key.
+ *
+ * @warning It is recommended to use the output of uECC_shared_secret() as the
+ * input of a recommended Key Derivation Function (see NIST SP 800-108) in
+ * order to produce a cryptographically secure symmetric key.
+ */
+int uECC_shared_secret(const uint8_t *p_public_key, const uint8_t *p_private_key,
+                       uint8_t *p_secret, uECC_Curve curve);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BLE_MESH_TC_ECC_DH_H__ */

components/bt/esp_ble_mesh/mesh_common/tinycrypt/include/tinycrypt/ecc_dsa.h

@@ -0,0 +1,139 @@
+/* ecc_dh.h - TinyCrypt interface to EC-DSA implementation */
+
+/*
+ * Copyright (c) 2014, Kenneth MacKay
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file
+ * @brief -- Interface to EC-DSA implementation.
+ *
+ *  Overview: This software is an implementation of EC-DSA. This implementation
+ *            uses curve NIST p-256.
+ *
+ *  Security: The curve NIST p-256 provides approximately 128 bits of security.
+ *
+ *  Usage:  - To sign: Compute a hash of the data you wish to sign (SHA-2 is
+ *          recommended) and pass it in to ecdsa_sign function along with your
+ *          private key and a random number. You must use a new non-predictable
+ *          random number to generate each new signature.
+ *          - To verify a signature: Compute the hash of the signed data using
+ *          the same hash as the signer and pass it to this function along with
+ *          the signer's public key and the signature values (r and s).
+ */
+
+#ifndef __BLE_MESH_TC_ECC_DSA_H__
+#define __BLE_MESH_TC_ECC_DSA_H__
+
+#include <tinycrypt/ecc.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Generate an ECDSA signature for a given hash value.
+ * @return returns TC_CRYPTO_SUCCESS (1) if the signature generated successfully
+ *         returns TC_CRYPTO_FAIL (0) if an error occurred.
+ *
+ * @param p_private_key IN -- Your private key.
+ * @param p_message_hash IN -- The hash of the message to sign.
+ * @param p_hash_size IN -- The size of p_message_hash in bytes.
+ * @param p_signature OUT -- Will be filled in with the signature value. Must be
+ * at least 2 * curve size long (for secp256r1, signature must be 64 bytes long).
+ *
+ * @warning A cryptographically-secure PRNG function must be set (using
+ * uECC_set_rng()) before calling uECC_sign().
+ * @note Usage: Compute a hash of the data you wish to sign (SHA-2 is
+ * recommended) and pass it in to this function along with your private key.
+ * @note side-channel countermeasure: algorithm strengthened against timing
+ * attack.
+ */
+int uECC_sign(const uint8_t *p_private_key, const uint8_t *p_message_hash,
+              unsigned p_hash_size, uint8_t *p_signature, uECC_Curve curve);
+
+#ifdef ENABLE_TESTS
+/*
+ * THIS FUNCTION SHOULD BE CALLED FOR TEST PURPOSES ONLY.
+ * Refer to uECC_sign() function for real applications.
+ */
+int uECC_sign_with_k(const uint8_t *private_key, const uint8_t *message_hash,
+                     unsigned int hash_size, uECC_word_t *k, uint8_t *signature,
+                     uECC_Curve curve);
+#endif
+
+/**
+ * @brief Verify an ECDSA signature.
+ * @return returns TC_SUCCESS (1) if the signature is valid
+ *     returns TC_FAIL (0) if the signature is invalid.
+ *
+ * @param p_public_key IN -- The signer's public key.
+ * @param p_message_hash IN -- The hash of the signed data.
+ * @param p_hash_size IN -- The size of p_message_hash in bytes.
+ * @param p_signature IN -- The signature values.
+ *
+ * @note Usage: Compute the hash of the signed data using the same hash as the
+ * signer and pass it to this function along with the signer's public key and
+ * the signature values (hash_size and signature).
+ */
+int uECC_verify(const uint8_t *p_public_key, const uint8_t *p_message_hash,
+                unsigned int p_hash_size, const uint8_t *p_signature, uECC_Curve curve);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BLE_MESH_TC_ECC_DSA_H__ */

components/bt/esp_ble_mesh/mesh_common/tinycrypt/include/tinycrypt/ecc_platform_specific.h

@@ -0,0 +1,81 @@
+/*  uECC_platform_specific.h - Interface to platform specific functions*/
+
+/* Copyright (c) 2014, Kenneth MacKay
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.*/
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  uECC_platform_specific.h -- Interface to platform specific functions
+ */
+
+#ifndef __BLE_MESH_UECC_PLATFORM_SPECIFIC_H_
+#define __BLE_MESH_UECC_PLATFORM_SPECIFIC_H_
+
+/*
+ * The RNG function should fill 'size' random bytes into 'dest'. It should
+ * return 1 if 'dest' was filled with random data, or 0 if the random data could
+ * not be generated. The filled-in values should be either truly random, or from
+ * a cryptographically-secure PRNG.
+ *
+ * A cryptographically-secure PRNG function must be set (using uECC_set_rng())
+ * before calling uECC_make_key() or uECC_sign().
+ *
+ * Setting a cryptographically-secure PRNG function improves the resistance to
+ * side-channel attacks for uECC_shared_secret().
+ *
+ * A correct PRNG function is set by default (default_RNG_defined = 1) and works
+ * for some platforms, such as Unix and Linux. For other platforms, you may need
+ * to provide another PRNG function.
+*/
+#define default_RNG_defined 0
+
+int default_CSPRNG(uint8_t *dest, unsigned int size);
+
+#endif /* __BLE_MESH_UECC_PLATFORM_SPECIFIC_H_ */

components/bt/esp_ble_mesh/mesh_common/tinycrypt/include/tinycrypt/hmac.h

@@ -0,0 +1,139 @@
+/* hmac.h - TinyCrypt interface to an HMAC implementation */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file
+ * @brief Interface to an HMAC implementation.
+ *
+ *  Overview:   HMAC is a message authentication code based on hash functions.
+ *              TinyCrypt hard codes SHA-256 as the hash function. A message
+ *              authentication code based on hash functions is also called a
+ *              keyed cryptographic hash function since it performs a
+ *              transformation specified by a key in an arbitrary length data
+ *              set into a fixed length data set (also called tag).
+ *
+ *  Security:   The security of the HMAC depends on the length of the key and
+ *              on the security of the hash function. Note that HMAC primitives
+ *              are much less affected by collision attacks than their
+ *              corresponding hash functions.
+ *
+ *  Requires:   SHA-256
+ *
+ *  Usage:      1) call tc_hmac_set_key to set the HMAC key.
+ *
+ *              2) call tc_hmac_init to initialize a struct hash_state before
+ *              processing the data.
+ *
+ *              3) call tc_hmac_update to process the next input segment;
+ *              tc_hmac_update can be called as many times as needed to process
+ *              all of the segments of the input; the order is important.
+ *
+ *              4) call tc_hmac_final to out put the tag.
+ */
+
+#ifndef __BLE_MESH_TC_HMAC_H__
+#define __BLE_MESH_TC_HMAC_H__
+
+#include <tinycrypt/sha256.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct tc_hmac_state_struct {
+    /* the internal state required by h */
+    struct tc_sha256_state_struct hash_state;
+    /* HMAC key schedule */
+    uint8_t key[2 * TC_SHA256_BLOCK_SIZE];
+};
+typedef struct tc_hmac_state_struct *TCHmacState_t;
+
+/**
+ *  @brief HMAC set key procedure
+ *  Configures ctx to use key
+ *  @return returns TC_CRYPTO_SUCCESS (1)
+ *          returns TC_CRYPTO_FAIL (0) if
+ *                ctx == NULL or
+ *                key == NULL or
+ *                key_size == 0
+ * @param ctx IN/OUT -- the struct tc_hmac_state_struct to initial
+ * @param key IN -- the HMAC key to configure
+ * @param key_size IN -- the HMAC key size
+ */
+int tc_hmac_set_key(TCHmacState_t ctx, const uint8_t *key,
+                    unsigned int key_size);
+
+/**
+ * @brief HMAC init procedure
+ * Initializes ctx to begin the next HMAC operation
+ * @return returns TC_CRYPTO_SUCCESS (1)
+ *         returns TC_CRYPTO_FAIL (0) if: ctx == NULL or key == NULL
+ * @param ctx IN/OUT -- struct tc_hmac_state_struct buffer to init
+ */
+int tc_hmac_init(TCHmacState_t ctx);
+
+/**
+ *  @brief HMAC update procedure
+ *  Mixes data_length bytes addressed by data into state
+ *  @return returns TC_CRYPTO_SUCCCESS (1)
+ *          returns TC_CRYPTO_FAIL (0) if: ctx == NULL or key == NULL
+ *  @note Assumes state has been initialized by tc_hmac_init
+ *  @param ctx IN/OUT -- state of HMAC computation so far
+ *  @param data IN -- data to incorporate into state
+ *  @param data_length IN -- size of data in bytes
+ */
+int tc_hmac_update(TCHmacState_t ctx, const void *data,
+                   unsigned int data_length);
+
+/**
+ *  @brief HMAC final procedure
+ *  Writes the HMAC tag into the tag buffer
+ *  @return returns TC_CRYPTO_SUCCESS (1)
+ *          returns TC_CRYPTO_FAIL (0) if:
+ *                tag == NULL or
+ *                ctx == NULL or
+ *                key == NULL or
+ *                taglen != TC_SHA256_DIGEST_SIZE
+ *  @note ctx is erased before exiting. This should never be changed/removed.
+ *  @note Assumes the tag bufer is at least sizeof(hmac_tag_size(state)) bytes
+ *  state has been initialized by tc_hmac_init
+ *  @param tag IN/OUT -- buffer to receive computed HMAC tag
+ *  @param taglen IN -- size of tag in bytes
+ *  @param ctx IN/OUT -- the HMAC state for computing tag
+ */
+int tc_hmac_final(uint8_t *tag, unsigned int taglen, TCHmacState_t ctx);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*__BLE_MESH_TC_HMAC_H__*/

components/bt/esp_ble_mesh/mesh_common/tinycrypt/include/tinycrypt/hmac_prng.h

@@ -0,0 +1,164 @@
+/* hmac_prng.h - TinyCrypt interface to an HMAC-PRNG implementation */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file
+ * @brief Interface to an HMAC-PRNG implementation.
+ *
+ *  Overview:   A pseudo-random number generator (PRNG) generates a sequence
+ *              of numbers that have a distribution close to the one expected
+ *              for a sequence of truly random numbers. The NIST Special
+ *              Publication 800-90A specifies several mechanisms to generate
+ *              sequences of pseudo random numbers, including the HMAC-PRNG one
+ *              which is based on HMAC. TinyCrypt implements HMAC-PRNG with
+ *              certain modifications from the NIST SP 800-90A spec.
+ *
+ *  Security:   A cryptographically secure PRNG depends on the existence of an
+ *              entropy source to provide a truly random seed as well as the
+ *              security of the primitives used as the building blocks (HMAC and
+ *              SHA256, for TinyCrypt).
+ *
+ *              The NIST SP 800-90A standard tolerates a null personalization,
+ *              while TinyCrypt requires a non-null personalization. This is
+ *              because a personalization string (the host name concatenated
+ *              with a time stamp, for example) is easily computed and might be
+ *              the last line of defense against failure of the entropy source.
+ *
+ *  Requires:   - SHA-256
+ *              - HMAC
+ *
+ *  Usage:      1) call tc_hmac_prng_init to set the HMAC key and process the
+ *              personalization data.
+ *
+ *              2) call tc_hmac_prng_reseed to process the seed and additional
+ *              input.
+ *
+ *              3) call tc_hmac_prng_generate to out put the pseudo-random data.
+ */
+
+#ifndef __BLE_MESH_TC_HMAC_PRNG_H__
+#define __BLE_MESH_TC_HMAC_PRNG_H__
+
+#include <tinycrypt/sha256.h>
+#include <tinycrypt/hmac.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define TC_HMAC_PRNG_RESEED_REQ -1
+
+struct tc_hmac_prng_struct {
+    /* the HMAC instance for this PRNG */
+    struct tc_hmac_state_struct h;
+    /* the PRNG key */
+    uint8_t key[TC_SHA256_DIGEST_SIZE];
+    /* PRNG state */
+    uint8_t v[TC_SHA256_DIGEST_SIZE];
+    /* calls to tc_hmac_prng_generate left before re-seed */
+    unsigned int countdown;
+};
+
+typedef struct tc_hmac_prng_struct *TCHmacPrng_t;
+
+/**
+ *  @brief HMAC-PRNG initialization procedure
+ *  Initializes prng with personalization, disables tc_hmac_prng_generate
+ *  @return returns TC_CRYPTO_SUCCESS (1)
+ *          returns TC_CRYPTO_FAIL (0) if:
+ *                prng == NULL,
+ *                personalization == NULL,
+ *                plen > MAX_PLEN
+ *  @note Assumes: - personalization != NULL.
+ *              The personalization is a platform unique string (e.g., the host
+ *              name) and is the last line of defense against failure of the
+ *              entropy source
+ *  @warning    NIST SP 800-90A specifies 3 items as seed material during
+ *              initialization: entropy seed, personalization, and an optional
+ *              nonce. TinyCrypts requires instead a non-null personalization
+ *              (which is easily computed) and indirectly requires an entropy
+ *              seed (since the reseed function is mandatorily called after
+ *              init)
+ *  @param prng IN/OUT -- the PRNG state to initialize
+ *  @param personalization IN -- personalization string
+ *  @param plen IN -- personalization length in bytes
+ */
+int tc_hmac_prng_init(TCHmacPrng_t prng,
+                      const uint8_t *personalization,
+                      unsigned int plen);
+
+/**
+ *  @brief HMAC-PRNG reseed procedure
+ *  Mixes seed into prng, enables tc_hmac_prng_generate
+ *  @return returns  TC_CRYPTO_SUCCESS (1)
+ *          returns TC_CRYPTO_FAIL (0) if:
+ *          prng == NULL,
+ *          seed == NULL,
+ *          seedlen < MIN_SLEN,
+ *          seendlen > MAX_SLEN,
+ *          additional_input != (const uint8_t *) 0 && additionallen == 0,
+ *          additional_input != (const uint8_t *) 0 && additionallen > MAX_ALEN
+ *  @note Assumes:- tc_hmac_prng_init has been called for prng
+ *              - seed has sufficient entropy.
+ *
+ *  @param prng IN/OUT -- the PRNG state
+ *  @param seed IN -- entropy to mix into the prng
+ *  @param seedlen IN -- length of seed in bytes
+ *  @param additional_input IN -- additional input to the prng
+ *  @param additionallen IN -- additional input length in bytes
+ */
+int tc_hmac_prng_reseed(TCHmacPrng_t prng, const uint8_t *seed,
+                        unsigned int seedlen, const uint8_t *additional_input,
+                        unsigned int additionallen);
+
+/**
+ *  @brief HMAC-PRNG generate procedure
+ *  Generates outlen pseudo-random bytes into out buffer, updates prng
+ *  @return returns TC_CRYPTO_SUCCESS (1)
+ *          returns TC_HMAC_PRNG_RESEED_REQ (-1) if a reseed is needed
+ *          returns TC_CRYPTO_FAIL (0) if:
+ *                out == NULL,
+ *                prng == NULL,
+ *                outlen == 0,
+ *                outlen >= MAX_OUT
+ *  @note Assumes tc_hmac_prng_init has been called for prng
+ *  @param out IN/OUT -- buffer to receive output
+ *  @param outlen IN -- size of out buffer in bytes
+ *  @param prng IN/OUT -- the PRNG state
+ */
+int tc_hmac_prng_generate(uint8_t *out, unsigned int outlen, TCHmacPrng_t prng);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BLE_MESH_TC_HMAC_PRNG_H__ */

components/bt/esp_ble_mesh/mesh_common/tinycrypt/include/tinycrypt/sha256.h

@@ -0,0 +1,129 @@
+/* sha256.h - TinyCrypt interface to a SHA-256 implementation */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file
+ * @brief Interface to a SHA-256 implementation.
+ *
+ *  Overview:   SHA-256 is a NIST approved cryptographic hashing algorithm
+ *              specified in FIPS 180. A hash algorithm maps data of arbitrary
+ *              size to data of fixed length.
+ *
+ *  Security:   SHA-256 provides 128 bits of security against collision attacks
+ *              and 256 bits of security against pre-image attacks. SHA-256 does
+ *              NOT behave like a random oracle, but it can be used as one if
+ *              the string being hashed is prefix-free encoded before hashing.
+ *
+ *  Usage:      1) call tc_sha256_init to initialize a struct
+ *              tc_sha256_state_struct before hashing a new string.
+ *
+ *              2) call tc_sha256_update to hash the next string segment;
+ *              tc_sha256_update can be called as many times as needed to hash
+ *              all of the segments of a string; the order is important.
+ *
+ *              3) call tc_sha256_final to out put the digest from a hashing
+ *              operation.
+ */
+
+#ifndef __BLE_MESH_TC_SHA256_H__
+#define __BLE_MESH_TC_SHA256_H__
+
+#include <stddef.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define TC_SHA256_BLOCK_SIZE (64)
+#define TC_SHA256_DIGEST_SIZE (32)
+#define TC_SHA256_STATE_BLOCKS (TC_SHA256_DIGEST_SIZE/4)
+
+struct tc_sha256_state_struct {
+    unsigned int iv[TC_SHA256_STATE_BLOCKS];
+    uint64_t bits_hashed;
+    uint8_t leftover[TC_SHA256_BLOCK_SIZE];
+    size_t leftover_offset;
+};
+
+typedef struct tc_sha256_state_struct *TCSha256State_t;
+
+/**
+ *  @brief SHA256 initialization procedure
+ *  Initializes s
+ *  @return returns TC_CRYPTO_SUCCESS (1)
+ *          returns TC_CRYPTO_FAIL (0) if s == NULL
+ *  @param s Sha256 state struct
+ */
+int tc_sha256_init(TCSha256State_t s);
+
+/**
+ *  @brief SHA256 update procedure
+ *  Hashes data_length bytes addressed by data into state s
+ *  @return returns TC_CRYPTO_SUCCESS (1)
+ *          returns TC_CRYPTO_FAIL (0) if:
+ *                s == NULL,
+ *                s->iv == NULL,
+ *                data == NULL
+ *  @note Assumes s has been initialized by tc_sha256_init
+ *  @warning The state buffer 'leftover' is left in memory after processing
+ *           If your application intends to have sensitive data in this
+ *           buffer, remind to erase it after the data has been processed
+ *  @param s Sha256 state struct
+ *  @param data message to hash
+ *  @param datalen length of message to hash
+ */
+int tc_sha256_update (TCSha256State_t s, const uint8_t *data, size_t datalen);
+
+/**
+ *  @brief SHA256 final procedure
+ *  Inserts the completed hash computation into digest
+ *  @return returns TC_CRYPTO_SUCCESS (1)
+ *          returns TC_CRYPTO_FAIL (0) if:
+ *                s == NULL,
+ *                s->iv == NULL,
+ *                digest == NULL
+ *  @note Assumes: s has been initialized by tc_sha256_init
+ *        digest points to at least TC_SHA256_DIGEST_SIZE bytes
+ *  @warning The state buffer 'leftover' is left in memory after processing
+ *           If your application intends to have sensitive data in this
+ *           buffer, remind to erase it after the data has been processed
+ *  @param digest unsigned eight bit integer
+ *  @param Sha256 state struct
+ */
+int tc_sha256_final(uint8_t *digest, TCSha256State_t s);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BLE_MESH_TC_SHA256_H__ */

components/bt/esp_ble_mesh/mesh_common/tinycrypt/include/tinycrypt/utils.h

@@ -0,0 +1,121 @@
+/* utils.h - TinyCrypt interface to platform-dependent run-time operations */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file
+ * @brief Interface to platform-dependent run-time operations.
+ *
+ */
+
+#ifndef __BLE_MESH_TC_UTILS_H__
+#define __BLE_MESH_TC_UTILS_H__
+
+#include <stdint.h>
+#include <stddef.h>
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Copy the the buffer 'from' to the buffer 'to'.
+ * @return returns TC_CRYPTO_SUCCESS (1)
+ *         returns TC_CRYPTO_FAIL (0) if:
+ *                from_len > to_len.
+ *
+ * @param to OUT -- destination buffer
+ * @param to_len IN -- length of destination buffer
+ * @param from IN -- origin buffer
+ * @param from_len IN -- length of origin buffer
+ */
+unsigned int _copy(uint8_t *to, unsigned int to_len,
+                   const uint8_t *from, unsigned int from_len);
+
+/**
+ * @brief Set the value 'val' into the buffer 'to', 'len' times.
+ *
+ * @param to OUT -- destination buffer
+ * @param val IN -- value to be set in 'to'
+ * @param len IN -- number of times the value will be copied
+ */
+void _set(void *to, uint8_t val, unsigned int len);
+
+/**
+ * @brief Set the value 'val' into the buffer 'to', 'len' times, in a way
+ *         which does not risk getting optimized out by the compiler
+ *        In cases where the compiler does not set __GNUC__ and where the
+ *         optimization level removes the memset, it may be necessary to
+ *         implement a _set_secure function and define the
+ *         TINYCRYPT_ARCH_HAS_SET_SECURE, which then can ensure that the
+ *         memset does not get optimized out.
+ *
+ * @param to OUT -- destination buffer
+ * @param val IN -- value to be set in 'to'
+ * @param len IN -- number of times the value will be copied
+ */
+#ifdef TINYCRYPT_ARCH_HAS_SET_SECURE
+extern void _set_secure(void *to, uint8_t val, unsigned int len);
+#else /* ! TINYCRYPT_ARCH_HAS_SET_SECURE */
+static inline void _set_secure(void *to, uint8_t val, unsigned int len)
+{
+    (void) memset(to, val, len);
+#ifdef __GNUC__
+    __asm__ __volatile__("" :: "g"(to) : "memory");
+#endif /* __GNUC__ */
+}
+#endif /* TINYCRYPT_ARCH_HAS_SET_SECURE */
+
+/*
+ * @brief AES specific doubling function, which utilizes
+ * the finite field used by AES.
+ * @return Returns a^2
+ *
+ * @param a IN/OUT -- value to be doubled
+ */
+uint8_t _double_byte(uint8_t a);
+
+/*
+ * @brief Constant-time algorithm to compare if two sequences of bytes are equal
+ * @return Returns 0 if equal, and non-zero otherwise
+ *
+ * @param a IN -- sequence of bytes a
+ * @param b IN -- sequence of bytes b
+ * @param size IN -- size of sequences a and b
+ */
+int _compare(const uint8_t *a, const uint8_t *b, size_t size);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __BLE_MESH_TC_UTILS_H__ */

components/bt/esp_ble_mesh/mesh_common/tinycrypt/src/aes_decrypt.c

@@ -0,0 +1,164 @@
+/* aes_decrypt.c - TinyCrypt implementation of AES decryption procedure */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <tinycrypt/aes.h>
+#include <tinycrypt/constants.h>
+#include <tinycrypt/utils.h>
+
+static const uint8_t inv_sbox[256] = {
+    0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e,
+    0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87,
+    0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32,
+    0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
+    0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49,
+    0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16,
+    0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50,
+    0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
+    0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05,
+    0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02,
+    0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41,
+    0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
+    0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8,
+    0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89,
+    0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b,
+    0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
+    0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59,
+    0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d,
+    0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d,
+    0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
+    0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63,
+    0x55, 0x21, 0x0c, 0x7d
+};
+
+int tc_aes128_set_decrypt_key(TCAesKeySched_t s, const uint8_t *k)
+{
+    return tc_aes128_set_encrypt_key(s, k);
+}
+
+#define mult8(a)(_double_byte(_double_byte(_double_byte(a))))
+#define mult9(a)(mult8(a)^(a))
+#define multb(a)(mult8(a)^_double_byte(a)^(a))
+#define multd(a)(mult8(a)^_double_byte(_double_byte(a))^(a))
+#define multe(a)(mult8(a)^_double_byte(_double_byte(a))^_double_byte(a))
+
+static inline void mult_row_column(uint8_t *out, const uint8_t *in)
+{
+    out[0] = multe(in[0]) ^ multb(in[1]) ^ multd(in[2]) ^ mult9(in[3]);
+    out[1] = mult9(in[0]) ^ multe(in[1]) ^ multb(in[2]) ^ multd(in[3]);
+    out[2] = multd(in[0]) ^ mult9(in[1]) ^ multe(in[2]) ^ multb(in[3]);
+    out[3] = multb(in[0]) ^ multd(in[1]) ^ mult9(in[2]) ^ multe(in[3]);
+}
+
+static inline void inv_mix_columns(uint8_t *s)
+{
+    uint8_t t[Nb * Nk];
+
+    mult_row_column(t, s);
+    mult_row_column(&t[Nb], s + Nb);
+    mult_row_column(&t[2 * Nb], s + (2 * Nb));
+    mult_row_column(&t[3 * Nb], s + (3 * Nb));
+    (void)_copy(s, sizeof(t), t, sizeof(t));
+}
+
+static inline void add_round_key(uint8_t *s, const unsigned int *k)
+{
+    s[0] ^= (uint8_t)(k[0] >> 24); s[1] ^= (uint8_t)(k[0] >> 16);
+    s[2] ^= (uint8_t)(k[0] >> 8); s[3] ^= (uint8_t)(k[0]);
+    s[4] ^= (uint8_t)(k[1] >> 24); s[5] ^= (uint8_t)(k[1] >> 16);
+    s[6] ^= (uint8_t)(k[1] >> 8); s[7] ^= (uint8_t)(k[1]);
+    s[8] ^= (uint8_t)(k[2] >> 24); s[9] ^= (uint8_t)(k[2] >> 16);
+    s[10] ^= (uint8_t)(k[2] >> 8); s[11] ^= (uint8_t)(k[2]);
+    s[12] ^= (uint8_t)(k[3] >> 24); s[13] ^= (uint8_t)(k[3] >> 16);
+    s[14] ^= (uint8_t)(k[3] >> 8); s[15] ^= (uint8_t)(k[3]);
+}
+
+static inline void inv_sub_bytes(uint8_t *s)
+{
+    unsigned int i;
+
+    for (i = 0; i < (Nb * Nk); ++i) {
+        s[i] = inv_sbox[s[i]];
+    }
+}
+
+/*
+ * This inv_shift_rows also implements the matrix flip required for
+ * inv_mix_columns, but performs it here to reduce the number of memory
+ * operations.
+ */
+static inline void inv_shift_rows(uint8_t *s)
+{
+    uint8_t t[Nb * Nk];
+
+    t[0]  = s[0]; t[1] = s[13]; t[2] = s[10]; t[3] = s[7];
+    t[4]  = s[4]; t[5] = s[1]; t[6] = s[14]; t[7] = s[11];
+    t[8]  = s[8]; t[9] = s[5]; t[10] = s[2]; t[11] = s[15];
+    t[12] = s[12]; t[13] = s[9]; t[14] = s[6]; t[15] = s[3];
+    (void)_copy(s, sizeof(t), t, sizeof(t));
+}
+
+int tc_aes_decrypt(uint8_t *out, const uint8_t *in, const TCAesKeySched_t s)
+{
+    uint8_t state[Nk * Nb];
+    unsigned int i;
+
+    if (out == (uint8_t *) 0) {
+        return TC_CRYPTO_FAIL;
+    } else if (in == (const uint8_t *) 0) {
+        return TC_CRYPTO_FAIL;
+    } else if (s == (TCAesKeySched_t) 0) {
+        return TC_CRYPTO_FAIL;
+    }
+
+    (void)_copy(state, sizeof(state), in, sizeof(state));
+
+    add_round_key(state, s->words + Nb * Nr);
+
+    for (i = Nr - 1; i > 0; --i) {
+        inv_shift_rows(state);
+        inv_sub_bytes(state);
+        add_round_key(state, s->words + Nb * i);
+        inv_mix_columns(state);
+    }
+
+    inv_shift_rows(state);
+    inv_sub_bytes(state);
+    add_round_key(state, s->words);
+
+    (void)_copy(out, sizeof(state), state, sizeof(state));
+
+    /*zeroing out the state buffer */
+    _set(state, TC_ZERO_BYTE, sizeof(state));
+
+
+    return TC_CRYPTO_SUCCESS;
+}

components/bt/esp_ble_mesh/mesh_common/tinycrypt/src/aes_encrypt.c

@@ -0,0 +1,191 @@
+/* aes_encrypt.c - TinyCrypt implementation of AES encryption procedure */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <tinycrypt/aes.h>
+#include <tinycrypt/utils.h>
+#include <tinycrypt/constants.h>
+
+static const uint8_t sbox[256] = {
+    0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b,
+    0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0,
+    0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26,
+    0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
+    0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2,
+    0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0,
+    0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed,
+    0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
+    0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f,
+    0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5,
+    0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec,
+    0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
+    0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14,
+    0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c,
+    0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d,
+    0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
+    0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f,
+    0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e,
+    0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11,
+    0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
+    0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f,
+    0xb0, 0x54, 0xbb, 0x16
+};
+
+static inline unsigned int rotword(unsigned int a)
+{
+    return (((a) >> 24) | ((a) << 8));
+}
+
+#define subbyte(a, o)(sbox[((a) >> (o))&0xff] << (o))
+#define subword(a)(subbyte(a, 24)|subbyte(a, 16)|subbyte(a, 8)|subbyte(a, 0))
+
+int tc_aes128_set_encrypt_key(TCAesKeySched_t s, const uint8_t *k)
+{
+    const unsigned int rconst[11] = {
+        0x00000000, 0x01000000, 0x02000000, 0x04000000, 0x08000000, 0x10000000,
+        0x20000000, 0x40000000, 0x80000000, 0x1b000000, 0x36000000
+    };
+    unsigned int i;
+    unsigned int t;
+
+    if (s == (TCAesKeySched_t) 0) {
+        return TC_CRYPTO_FAIL;
+    } else if (k == (const uint8_t *) 0) {
+        return TC_CRYPTO_FAIL;
+    }
+
+    for (i = 0; i < Nk; ++i) {
+        s->words[i] = (k[Nb * i] << 24) | (k[Nb * i + 1] << 16) |
+                      (k[Nb * i + 2] << 8) | (k[Nb * i + 3]);
+    }
+
+    for (; i < (Nb * (Nr + 1)); ++i) {
+        t = s->words[i - 1];
+        if ((i % Nk) == 0) {
+            t = subword(rotword(t)) ^ rconst[i / Nk];
+        }
+        s->words[i] = s->words[i - Nk] ^ t;
+    }
+
+    return TC_CRYPTO_SUCCESS;
+}
+
+static inline void add_round_key(uint8_t *s, const unsigned int *k)
+{
+    s[0] ^= (uint8_t)(k[0] >> 24); s[1] ^= (uint8_t)(k[0] >> 16);
+    s[2] ^= (uint8_t)(k[0] >> 8); s[3] ^= (uint8_t)(k[0]);
+    s[4] ^= (uint8_t)(k[1] >> 24); s[5] ^= (uint8_t)(k[1] >> 16);
+    s[6] ^= (uint8_t)(k[1] >> 8); s[7] ^= (uint8_t)(k[1]);
+    s[8] ^= (uint8_t)(k[2] >> 24); s[9] ^= (uint8_t)(k[2] >> 16);
+    s[10] ^= (uint8_t)(k[2] >> 8); s[11] ^= (uint8_t)(k[2]);
+    s[12] ^= (uint8_t)(k[3] >> 24); s[13] ^= (uint8_t)(k[3] >> 16);
+    s[14] ^= (uint8_t)(k[3] >> 8); s[15] ^= (uint8_t)(k[3]);
+}
+
+static inline void sub_bytes(uint8_t *s)
+{
+    unsigned int i;
+
+    for (i = 0; i < (Nb * Nk); ++i) {
+        s[i] = sbox[s[i]];
+    }
+}
+
+#define triple(a)(_double_byte(a)^(a))
+
+static inline void mult_row_column(uint8_t *out, const uint8_t *in)
+{
+    out[0] = _double_byte(in[0]) ^ triple(in[1]) ^ in[2] ^ in[3];
+    out[1] = in[0] ^ _double_byte(in[1]) ^ triple(in[2]) ^ in[3];
+    out[2] = in[0] ^ in[1] ^ _double_byte(in[2]) ^ triple(in[3]);
+    out[3] = triple(in[0]) ^ in[1] ^ in[2] ^ _double_byte(in[3]);
+}
+
+static inline void mix_columns(uint8_t *s)
+{
+    uint8_t t[Nb * Nk];
+
+    mult_row_column(t, s);
+    mult_row_column(&t[Nb], s + Nb);
+    mult_row_column(&t[2 * Nb], s + (2 * Nb));
+    mult_row_column(&t[3 * Nb], s + (3 * Nb));
+    (void) _copy(s, sizeof(t), t, sizeof(t));
+}
+
+/*
+ * This shift_rows also implements the matrix flip required for mix_columns, but
+ * performs it here to reduce the number of memory operations.
+ */
+static inline void shift_rows(uint8_t *s)
+{
+    uint8_t t[Nb * Nk];
+
+    t[0]  = s[0]; t[1] = s[5]; t[2] = s[10]; t[3] = s[15];
+    t[4]  = s[4]; t[5] = s[9]; t[6] = s[14]; t[7] = s[3];
+    t[8]  = s[8]; t[9] = s[13]; t[10] = s[2]; t[11] = s[7];
+    t[12] = s[12]; t[13] = s[1]; t[14] = s[6]; t[15] = s[11];
+    (void) _copy(s, sizeof(t), t, sizeof(t));
+}
+
+int tc_aes_encrypt(uint8_t *out, const uint8_t *in, const TCAesKeySched_t s)
+{
+    uint8_t state[Nk * Nb];
+    unsigned int i;
+
+    if (out == (uint8_t *) 0) {
+        return TC_CRYPTO_FAIL;
+    } else if (in == (const uint8_t *) 0) {
+        return TC_CRYPTO_FAIL;
+    } else if (s == (TCAesKeySched_t) 0) {
+        return TC_CRYPTO_FAIL;
+    }
+
+    (void)_copy(state, sizeof(state), in, sizeof(state));
+    add_round_key(state, s->words);
+
+    for (i = 0; i < (Nr - 1); ++i) {
+        sub_bytes(state);
+        shift_rows(state);
+        mix_columns(state);
+        add_round_key(state, s->words + Nb * (i + 1));
+    }
+
+    sub_bytes(state);
+    shift_rows(state);
+    add_round_key(state, s->words + Nb * (i + 1));
+
+    (void)_copy(out, sizeof(state), state, sizeof(state));
+
+    /* zeroing out the state buffer */
+    _set(state, TC_ZERO_BYTE, sizeof(state));
+
+    return TC_CRYPTO_SUCCESS;
+}

components/bt/esp_ble_mesh/mesh_common/tinycrypt/src/cbc_mode.c

@@ -0,0 +1,114 @@
+/* cbc_mode.c - TinyCrypt implementation of CBC mode encryption & decryption */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <tinycrypt/cbc_mode.h>
+#include <tinycrypt/constants.h>
+#include <tinycrypt/utils.h>
+
+int tc_cbc_mode_encrypt(uint8_t *out, unsigned int outlen, const uint8_t *in,
+                        unsigned int inlen, const uint8_t *iv,
+                        const TCAesKeySched_t sched)
+{
+
+    uint8_t buffer[TC_AES_BLOCK_SIZE];
+    unsigned int n, m;
+
+    /* input sanity check: */
+    if (out == (uint8_t *) 0 ||
+            in == (const uint8_t *) 0 ||
+            sched == (TCAesKeySched_t) 0 ||
+            inlen == 0 ||
+            outlen == 0 ||
+            (inlen % TC_AES_BLOCK_SIZE) != 0 ||
+            (outlen % TC_AES_BLOCK_SIZE) != 0 ||
+            outlen != inlen + TC_AES_BLOCK_SIZE) {
+        return TC_CRYPTO_FAIL;
+    }
+
+    /* copy iv to the buffer */
+    (void)_copy(buffer, TC_AES_BLOCK_SIZE, iv, TC_AES_BLOCK_SIZE);
+    /* copy iv to the output buffer */
+    (void)_copy(out, TC_AES_BLOCK_SIZE, iv, TC_AES_BLOCK_SIZE);
+    out += TC_AES_BLOCK_SIZE;
+
+    for (n = m = 0; n < inlen; ++n) {
+        buffer[m++] ^= *in++;
+        if (m == TC_AES_BLOCK_SIZE) {
+            (void)tc_aes_encrypt(buffer, buffer, sched);
+            (void)_copy(out, TC_AES_BLOCK_SIZE,
+                        buffer, TC_AES_BLOCK_SIZE);
+            out += TC_AES_BLOCK_SIZE;
+            m = 0;
+        }
+    }
+
+    return TC_CRYPTO_SUCCESS;
+}
+
+int tc_cbc_mode_decrypt(uint8_t *out, unsigned int outlen, const uint8_t *in,
+                        unsigned int inlen, const uint8_t *iv,
+                        const TCAesKeySched_t sched)
+{
+
+    uint8_t buffer[TC_AES_BLOCK_SIZE];
+    const uint8_t *p;
+    unsigned int n, m;
+
+    /* sanity check the inputs */
+    if (out == (uint8_t *) 0 ||
+            in == (const uint8_t *) 0 ||
+            sched == (TCAesKeySched_t) 0 ||
+            inlen == 0 ||
+            outlen == 0 ||
+            (inlen % TC_AES_BLOCK_SIZE) != 0 ||
+            (outlen % TC_AES_BLOCK_SIZE) != 0 ||
+            outlen != inlen) {
+        return TC_CRYPTO_FAIL;
+    }
+
+    /*
+     * Note that in == iv + ciphertext, i.e. the iv and the ciphertext are
+     * contiguous. This allows for a very efficient decryption algorithm
+     * that would not otherwise be possible.
+     */
+    p = iv;
+    for (n = m = 0; n < outlen; ++n) {
+        if ((n % TC_AES_BLOCK_SIZE) == 0) {
+            (void)tc_aes_decrypt(buffer, in, sched);
+            in += TC_AES_BLOCK_SIZE;
+            m = 0;
+        }
+        *out++ = buffer[m++] ^ *p++;
+    }
+
+    return TC_CRYPTO_SUCCESS;
+}

components/bt/esp_ble_mesh/mesh_common/tinycrypt/src/ccm_mode.c

@@ -0,0 +1,266 @@
+/* ccm_mode.c - TinyCrypt implementation of CCM mode */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <tinycrypt/ccm_mode.h>
+#include <tinycrypt/constants.h>
+#include <tinycrypt/utils.h>
+
+#include <stdio.h>
+
+int tc_ccm_config(TCCcmMode_t c, TCAesKeySched_t sched, uint8_t *nonce,
+                  unsigned int nlen, unsigned int mlen)
+{
+
+    /* input sanity check: */
+    if (c == (TCCcmMode_t) 0 ||
+            sched == (TCAesKeySched_t) 0 ||
+            nonce == (uint8_t *) 0) {
+        return TC_CRYPTO_FAIL;
+    } else if (nlen != 13) {
+        return TC_CRYPTO_FAIL; /* The allowed nonce size is: 13. See documentation.*/
+    } else if ((mlen < 4) || (mlen > 16) || (mlen & 1)) {
+        return TC_CRYPTO_FAIL; /* The allowed mac sizes are: 4, 6, 8, 10, 12, 14, 16.*/
+    }
+
+    c->mlen = mlen;
+    c->sched = sched;
+    c->nonce = nonce;
+
+    return TC_CRYPTO_SUCCESS;
+}
+
+/**
+ * Variation of CBC-MAC mode used in CCM.
+ */
+static void ccm_cbc_mac(uint8_t *T, const uint8_t *data, unsigned int dlen,
+                        unsigned int flag, TCAesKeySched_t sched)
+{
+
+    unsigned int i;
+
+    if (flag > 0) {
+        T[0] ^= (uint8_t)(dlen >> 8);
+        T[1] ^= (uint8_t)(dlen);
+        dlen += 2; i = 2;
+    } else {
+        i = 0;
+    }
+
+    while (i < dlen) {
+        T[i++ % (Nb * Nk)] ^= *data++;
+        if (((i % (Nb * Nk)) == 0) || dlen == i) {
+            (void) tc_aes_encrypt(T, T, sched);
+        }
+    }
+}
+
+/**
+ * Variation of CTR mode used in CCM.
+ * The CTR mode used by CCM is slightly different than the conventional CTR
+ * mode (the counter is increased before encryption, instead of after
+ * encryption). Besides, it is assumed that the counter is stored in the last
+ * 2 bytes of the nonce.
+ */
+static int ccm_ctr_mode(uint8_t *out, unsigned int outlen, const uint8_t *in,
+                        unsigned int inlen, uint8_t *ctr, const TCAesKeySched_t sched)
+{
+
+    uint8_t buffer[TC_AES_BLOCK_SIZE];
+    uint8_t nonce[TC_AES_BLOCK_SIZE];
+    uint16_t block_num;
+    unsigned int i;
+
+    /* input sanity check: */
+    if (out == (uint8_t *) 0 ||
+            in == (uint8_t *) 0 ||
+            ctr == (uint8_t *) 0 ||
+            sched == (TCAesKeySched_t) 0 ||
+            inlen == 0 ||
+            outlen == 0 ||
+            outlen != inlen) {
+        return TC_CRYPTO_FAIL;
+    }
+
+    /* copy the counter to the nonce */
+    (void) _copy(nonce, sizeof(nonce), ctr, sizeof(nonce));
+
+    /* select the last 2 bytes of the nonce to be incremented */
+    block_num = (uint16_t) ((nonce[14] << 8) | (nonce[15]));
+    for (i = 0; i < inlen; ++i) {
+        if ((i % (TC_AES_BLOCK_SIZE)) == 0) {
+            block_num++;
+            nonce[14] = (uint8_t)(block_num >> 8);
+            nonce[15] = (uint8_t)(block_num);
+            if (!tc_aes_encrypt(buffer, nonce, sched)) {
+                return TC_CRYPTO_FAIL;
+            }
+        }
+        /* update the output */
+        *out++ = buffer[i % (TC_AES_BLOCK_SIZE)] ^ *in++;
+    }
+
+    /* update the counter */
+    ctr[14] = nonce[14]; ctr[15] = nonce[15];
+
+    return TC_CRYPTO_SUCCESS;
+}
+
+int tc_ccm_generation_encryption(uint8_t *out, unsigned int olen,
+                                 const uint8_t *associated_data,
+                                 unsigned int alen, const uint8_t *payload,
+                                 unsigned int plen, TCCcmMode_t c)
+{
+
+    /* input sanity check: */
+    if ((out == (uint8_t *) 0) ||
+            (c == (TCCcmMode_t) 0) ||
+            ((plen > 0) && (payload == (uint8_t *) 0)) ||
+            ((alen > 0) && (associated_data == (uint8_t *) 0)) ||
+            (alen >= TC_CCM_AAD_MAX_BYTES) || /* associated data size unsupported */
+            (plen >= TC_CCM_PAYLOAD_MAX_BYTES) || /* payload size unsupported */
+            (olen < (plen + c->mlen))) {  /* invalid output buffer size */
+        return TC_CRYPTO_FAIL;
+    }
+
+    uint8_t b[Nb * Nk];
+    uint8_t tag[Nb * Nk];
+    unsigned int i;
+
+    /* GENERATING THE AUTHENTICATION TAG: */
+
+    /* formatting the sequence b for authentication: */
+    b[0] = ((alen > 0) ? 0x40 : 0) | (((c->mlen - 2) / 2 << 3)) | (1);
+    for (i = 1; i <= 13; ++i) {
+        b[i] = c->nonce[i - 1];
+    }
+    b[14] = (uint8_t)(plen >> 8);
+    b[15] = (uint8_t)(plen);
+
+    /* computing the authentication tag using cbc-mac: */
+    (void) tc_aes_encrypt(tag, b, c->sched);
+    if (alen > 0) {
+        ccm_cbc_mac(tag, associated_data, alen, 1, c->sched);
+    }
+    if (plen > 0) {
+        ccm_cbc_mac(tag, payload, plen, 0, c->sched);
+    }
+
+    /* ENCRYPTION: */
+
+    /* formatting the sequence b for encryption: */
+    b[0] = 1; /* q - 1 = 2 - 1 = 1 */
+    b[14] = b[15] = TC_ZERO_BYTE;
+
+    /* encrypting payload using ctr mode: */
+    ccm_ctr_mode(out, plen, payload, plen, b, c->sched);
+
+    b[14] = b[15] = TC_ZERO_BYTE; /* restoring initial counter for ctr_mode (0):*/
+
+    /* encrypting b and adding the tag to the output: */
+    (void) tc_aes_encrypt(b, b, c->sched);
+    out += plen;
+    for (i = 0; i < c->mlen; ++i) {
+        *out++ = tag[i] ^ b[i];
+    }
+
+    return TC_CRYPTO_SUCCESS;
+}
+
+int tc_ccm_decryption_verification(uint8_t *out, unsigned int olen,
+                                   const uint8_t *associated_data,
+                                   unsigned int alen, const uint8_t *payload,
+                                   unsigned int plen, TCCcmMode_t c)
+{
+
+    /* input sanity check: */
+    if ((out == (uint8_t *) 0) ||
+            (c == (TCCcmMode_t) 0) ||
+            ((plen > 0) && (payload == (uint8_t *) 0)) ||
+            ((alen > 0) && (associated_data == (uint8_t *) 0)) ||
+            (alen >= TC_CCM_AAD_MAX_BYTES) || /* associated data size unsupported */
+            (plen >= TC_CCM_PAYLOAD_MAX_BYTES) || /* payload size unsupported */
+            (olen < plen - c->mlen)) { /* invalid output buffer size */
+        return TC_CRYPTO_FAIL;
+    }
+
+    uint8_t b[Nb * Nk];
+    uint8_t tag[Nb * Nk];
+    unsigned int i;
+
+    /* DECRYPTION: */
+
+    /* formatting the sequence b for decryption: */
+    b[0] = 1; /* q - 1 = 2 - 1 = 1 */
+    for (i = 1; i < 14; ++i) {
+        b[i] = c->nonce[i - 1];
+    }
+    b[14] = b[15] = TC_ZERO_BYTE; /* initial counter value is 0 */
+
+    /* decrypting payload using ctr mode: */
+    ccm_ctr_mode(out, plen - c->mlen, payload, plen - c->mlen, b, c->sched);
+
+    b[14] = b[15] = TC_ZERO_BYTE; /* restoring initial counter value (0) */
+
+    /* encrypting b and restoring the tag from input: */
+    (void) tc_aes_encrypt(b, b, c->sched);
+    for (i = 0; i < c->mlen; ++i) {
+        tag[i] = *(payload + plen - c->mlen + i) ^ b[i];
+    }
+
+    /* VERIFYING THE AUTHENTICATION TAG: */
+
+    /* formatting the sequence b for authentication: */
+    b[0] = ((alen > 0) ? 0x40 : 0) | (((c->mlen - 2) / 2 << 3)) | (1);
+    for (i = 1; i < 14; ++i) {
+        b[i] = c->nonce[i - 1];
+    }
+    b[14] = (uint8_t)((plen - c->mlen) >> 8);
+    b[15] = (uint8_t)(plen - c->mlen);
+
+    /* computing the authentication tag using cbc-mac: */
+    (void) tc_aes_encrypt(b, b, c->sched);
+    if (alen > 0) {
+        ccm_cbc_mac(b, associated_data, alen, 1, c->sched);
+    }
+    if (plen > 0) {
+        ccm_cbc_mac(b, out, plen - c->mlen, 0, c->sched);
+    }
+
+    /* comparing the received tag and the computed one: */
+    if (_compare(b, tag, c->mlen) == 0) {
+        return TC_CRYPTO_SUCCESS;
+    } else {
+        /* erase the decrypted buffer in case of mac validation failure: */
+        _set(out, 0, plen - c->mlen);
+        return TC_CRYPTO_FAIL;
+    }
+}

components/bt/esp_ble_mesh/mesh_common/mesh_aes_encrypt.c → components/bt/esp_ble_mesh/mesh_common/tinycrypt/src/cmac_mode.c

@@ -1,4 +1,4 @@
-/* aes_encrypt.c - TinyCrypt implementation of AES encryption procedure */
+/* cmac_mode.c - TinyCrypt CMAC mode implementation */
 
 /*
  *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
@@ -30,11 +30,13 @@
  *  POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "mesh_util.h"
-#include "mesh_aes_encrypt.h"
+#include <tinycrypt/aes.h>
+#include <tinycrypt/cmac_mode.h>
+#include <tinycrypt/constants.h>
+#include <tinycrypt/utils.h>
 
 /* max number of calls until change the key (2^48).*/
-const static uint64_t MAX_CALLS = ((uint64_t)1 << 48);
+static const uint64_t MAX_CALLS = ((uint64_t)1 << 48);
 
 /*
  *  gf_wrap -- In our implementation, GF(2^128) is represented as a 16 byte
@@ -64,160 +66,32 @@ const static uint64_t MAX_CALLS = ((uint64_t)1 << 48);
  */
 const unsigned char gf_wrap = 0x87;
 
-static const uint8_t sbox[256] = {
-    0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b,
-    0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0,
-    0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26,
-    0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
-    0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2,
-    0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0,
-    0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed,
-    0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
-    0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f,
-    0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5,
-    0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec,
-    0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
-    0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14,
-    0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c,
-    0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d,
-    0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
-    0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f,
-    0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e,
-    0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11,
-    0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
-    0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f,
-    0xb0, 0x54, 0xbb, 0x16
-};
-
-static inline unsigned int rotword(unsigned int a)
-{
-    return (((a) >> 24) | ((a) << 8));
-}
-
-#define subbyte(a, o)   (sbox[((a) >> (o))&0xff] << (o))
-#define subword(a)      (subbyte(a, 24)|subbyte(a, 16)|subbyte(a, 8)|subbyte(a, 0))
-
-int tc_aes128_set_encrypt_key(TCAesKeySched_t s, const uint8_t *k)
-{
-    const unsigned int rconst[11] = {
-        0x00000000, 0x01000000, 0x02000000, 0x04000000, 0x08000000, 0x10000000,
-        0x20000000, 0x40000000, 0x80000000, 0x1b000000, 0x36000000
-    };
-    unsigned int i;
-    unsigned int t;
-
-    if (s == (TCAesKeySched_t) 0) {
-        return TC_CRYPTO_FAIL;
-    } else if (k == (const uint8_t *) 0) {
-        return TC_CRYPTO_FAIL;
-    }
-
-    for (i = 0; i < Nk; ++i) {
-        s->words[i] = (k[Nb * i] << 24) | (k[Nb * i + 1] << 16) |
-                      (k[Nb * i + 2] << 8) | (k[Nb * i + 3]);
-    }
-
-    for (; i < (Nb * (Nr + 1)); ++i) {
-        t = s->words[i - 1];
-        if ((i % Nk) == 0) {
-            t = subword(rotword(t)) ^ rconst[i / Nk];
-        }
-        s->words[i] = s->words[i - Nk] ^ t;
-    }
-
-    return TC_CRYPTO_SUCCESS;
-}
-
-static inline void add_round_key(uint8_t *s, const unsigned int *k)
-{
-    s[0] ^= (uint8_t)(k[0] >> 24); s[1] ^= (uint8_t)(k[0] >> 16);
-    s[2] ^= (uint8_t)(k[0] >> 8); s[3] ^= (uint8_t)(k[0]);
-    s[4] ^= (uint8_t)(k[1] >> 24); s[5] ^= (uint8_t)(k[1] >> 16);
-    s[6] ^= (uint8_t)(k[1] >> 8); s[7] ^= (uint8_t)(k[1]);
-    s[8] ^= (uint8_t)(k[2] >> 24); s[9] ^= (uint8_t)(k[2] >> 16);
-    s[10] ^= (uint8_t)(k[2] >> 8); s[11] ^= (uint8_t)(k[2]);
-    s[12] ^= (uint8_t)(k[3] >> 24); s[13] ^= (uint8_t)(k[3] >> 16);
-    s[14] ^= (uint8_t)(k[3] >> 8); s[15] ^= (uint8_t)(k[3]);
-}
-
-static inline void sub_bytes(uint8_t *s)
-{
-    unsigned int i;
-
-    for (i = 0; i < (Nb * Nk); ++i) {
-        s[i] = sbox[s[i]];
-    }
-}
-
-#define triple(a)(_double_byte(a)^(a))
-
-static inline void mult_row_column(uint8_t *out, const uint8_t *in)
-{
-    out[0] = _double_byte(in[0]) ^ triple(in[1]) ^ in[2] ^ in[3];
-    out[1] = in[0] ^ _double_byte(in[1]) ^ triple(in[2]) ^ in[3];
-    out[2] = in[0] ^ in[1] ^ _double_byte(in[2]) ^ triple(in[3]);
-    out[3] = triple(in[0]) ^ in[1] ^ in[2] ^ _double_byte(in[3]);
-}
-
-static inline void mix_columns(uint8_t *s)
-{
-    uint8_t t[Nb * Nk] = {0};
-
-    mult_row_column(t, s);
-    mult_row_column(&t[Nb], s + Nb);
-    mult_row_column(&t[2 * Nb], s + (2 * Nb));
-    mult_row_column(&t[3 * Nb], s + (3 * Nb));
-    (void) _copy(s, sizeof(t), t, sizeof(t));
-}
-
 /*
- * This shift_rows also implements the matrix flip required for mix_columns, but
- * performs it here to reduce the number of memory operations.
+ *  assumes: out != NULL and points to a GF(2^n) value to receive the
+ *            doubled value;
+ *           in != NULL and points to a 16 byte GF(2^n) value
+ *            to double;
+ *           the in and out buffers do not overlap.
+ *  effects: doubles the GF(2^n) value pointed to by "in" and places
+ *           the result in the GF(2^n) value pointed to by "out."
  */
-static inline void shift_rows(uint8_t *s)
-{
-    uint8_t t[Nb * Nk] = {0};
-
-    t[0]  = s[0]; t[1] = s[5]; t[2] = s[10]; t[3] = s[15];
-    t[4]  = s[4]; t[5] = s[9]; t[6] = s[14]; t[7] = s[3];
-    t[8]  = s[8]; t[9] = s[13]; t[10] = s[2]; t[11] = s[7];
-    t[12] = s[12]; t[13] = s[1]; t[14] = s[6]; t[15] = s[11];
-    (void) _copy(s, sizeof(t), t, sizeof(t));
-}
-
-int tc_aes_encrypt(uint8_t *out, const uint8_t *in, const TCAesKeySched_t s)
+void gf_double(uint8_t *out, uint8_t *in)
 {
-    uint8_t state[Nk * Nb] = {0};
-    unsigned int i;
 
-    if (out == (uint8_t *) 0) {
-        return TC_CRYPTO_FAIL;
-    } else if (in == (const uint8_t *) 0) {
-        return TC_CRYPTO_FAIL;
-    } else if (s == (TCAesKeySched_t) 0) {
-        return TC_CRYPTO_FAIL;
-    }
+    /* start with low order byte */
+    uint8_t *x = in + (TC_AES_BLOCK_SIZE - 1);
 
-    (void)_copy(state, sizeof(state), in, sizeof(state));
-    add_round_key(state, s->words);
+    /* if msb == 1, we need to add the gf_wrap value, otherwise add 0 */
+    uint8_t carry = (in[0] >> 7) ? gf_wrap : 0;
 
-    for (i = 0; i < (Nr - 1); ++i) {
-        sub_bytes(state);
-        shift_rows(state);
-        mix_columns(state);
-        add_round_key(state, s->words + Nb * (i + 1));
+    out += (TC_AES_BLOCK_SIZE - 1);
+    for (;;) {
+        *out-- = (*x << 1) ^ carry;
+        if (x == in) {
+            break;
+        }
+        carry = *x-- >> 7;
     }
-
-    sub_bytes(state);
-    shift_rows(state);
-    add_round_key(state, s->words + Nb * (i + 1));
-
-    (void)_copy(out, sizeof(state), state, sizeof(state));
-
-    /* zeroing out the state buffer */
-    _set(state, TC_ZERO_BYTE, sizeof(state));
-
-    return TC_CRYPTO_SUCCESS;
 }
 
 int tc_cmac_setup(TCCmacState_t s, const uint8_t *key, TCAesKeySched_t sched)
@@ -248,32 +122,16 @@ int tc_cmac_setup(TCCmacState_t s, const uint8_t *key, TCAesKeySched_t sched)
     return TC_CRYPTO_SUCCESS;
 }
 
-/*
- *  assumes: out != NULL and points to a GF(2^n) value to receive the
- *            doubled value;
- *           in != NULL and points to a 16 byte GF(2^n) value
- *            to double;
- *           the in and out buffers do not overlap.
- *  effects: doubles the GF(2^n) value pointed to by "in" and places
- *           the result in the GF(2^n) value pointed to by "out."
- */
-void gf_double(uint8_t *out, uint8_t *in)
+int tc_cmac_erase(TCCmacState_t s)
 {
+    if (s == (TCCmacState_t) 0) {
+        return TC_CRYPTO_FAIL;
+    }
 
-    /* start with low order byte */
-    uint8_t *x = in + (TC_AES_BLOCK_SIZE - 1);
-
-    /* if msb == 1, we need to add the gf_wrap value, otherwise add 0 */
-    uint8_t carry = (in[0] >> 7) ? gf_wrap : 0;
+    /* destroy the current state */
+    _set(s, 0, sizeof(*s));
 
-    out += (TC_AES_BLOCK_SIZE - 1);
-    for (;;) {
-        *out-- = (*x << 1) ^ carry;
-        if (x == in) {
-            break;
-        }
-        carry = *x-- >> 7;
-    }
+    return TC_CRYPTO_SUCCESS;
 }
 
 int tc_cmac_init(TCCmacState_t s)
@@ -363,7 +221,7 @@ int tc_cmac_update(TCCmacState_t s, const uint8_t *data, size_t data_length)
 
 int tc_cmac_final(uint8_t *tag, TCCmacState_t s)
 {
-    uint8_t *k = NULL;
+    uint8_t *k;
     unsigned int i;
 
     /* input sanity check: */
@@ -394,15 +252,3 @@ int tc_cmac_final(uint8_t *tag, TCCmacState_t s)
 
     return TC_CRYPTO_SUCCESS;
 }
-
-int tc_cmac_erase(TCCmacState_t s)
-{
-    if (s == (TCCmacState_t) 0) {
-        return TC_CRYPTO_FAIL;
-    }
-
-    /* destroy the current state */
-    _set(s, 0, sizeof(*s));
-
-    return TC_CRYPTO_SUCCESS;
-}

components/bt/esp_ble_mesh/mesh_common/tinycrypt/src/ctr_mode.c

@@ -0,0 +1,85 @@
+/* ctr_mode.c - TinyCrypt CTR mode implementation */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <tinycrypt/constants.h>
+#include <tinycrypt/ctr_mode.h>
+#include <tinycrypt/utils.h>
+
+int tc_ctr_mode(uint8_t *out, unsigned int outlen, const uint8_t *in,
+                unsigned int inlen, uint8_t *ctr, const TCAesKeySched_t sched)
+{
+
+    uint8_t buffer[TC_AES_BLOCK_SIZE];
+    uint8_t nonce[TC_AES_BLOCK_SIZE];
+    unsigned int block_num;
+    unsigned int i;
+
+    /* input sanity check: */
+    if (out == (uint8_t *) 0 ||
+            in == (uint8_t *) 0 ||
+            ctr == (uint8_t *) 0 ||
+            sched == (TCAesKeySched_t) 0 ||
+            inlen == 0 ||
+            outlen == 0 ||
+            outlen != inlen) {
+        return TC_CRYPTO_FAIL;
+    }
+
+    /* copy the ctr to the nonce */
+    (void)_copy(nonce, sizeof(nonce), ctr, sizeof(nonce));
+
+    /* select the last 4 bytes of the nonce to be incremented */
+    block_num = (nonce[12] << 24) | (nonce[13] << 16) |
+                (nonce[14] << 8) | (nonce[15]);
+    for (i = 0; i < inlen; ++i) {
+        if ((i % (TC_AES_BLOCK_SIZE)) == 0) {
+            /* encrypt data using the current nonce */
+            if (tc_aes_encrypt(buffer, nonce, sched)) {
+                block_num++;
+                nonce[12] = (uint8_t)(block_num >> 24);
+                nonce[13] = (uint8_t)(block_num >> 16);
+                nonce[14] = (uint8_t)(block_num >> 8);
+                nonce[15] = (uint8_t)(block_num);
+            } else {
+                return TC_CRYPTO_FAIL;
+            }
+        }
+        /* update the output */
+        *out++ = buffer[i % (TC_AES_BLOCK_SIZE)] ^ *in++;
+    }
+
+    /* update the counter */
+    ctr[12] = nonce[12]; ctr[13] = nonce[13];
+    ctr[14] = nonce[14]; ctr[15] = nonce[15];
+
+    return TC_CRYPTO_SUCCESS;
+}

components/bt/esp_ble_mesh/mesh_common/tinycrypt/src/ctr_prng.c

@@ -0,0 +1,279 @@
+/* ctr_prng.c - TinyCrypt implementation of CTR-PRNG */
+
+/*
+ * Copyright (c) 2016, Chris Morrison
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <tinycrypt/ctr_prng.h>
+#include <tinycrypt/utils.h>
+#include <tinycrypt/constants.h>
+#include <string.h>
+
+/*
+ * This PRNG is based on the CTR_DRBG described in Recommendation for Random
+ * Number Generation Using Deterministic Random Bit Generators,
+ * NIST SP 800-90A Rev. 1.
+ *
+ * Annotations to particular steps (e.g. 10.2.1.2 Step 1) refer to the steps
+ * described in that document.
+ *
+ */
+
+/**
+ *  @brief Array incrementer
+ *  Treats the supplied array as one contiguous number (MSB in arr[0]), and
+ *  increments it by one
+ *  @return none
+ *  @param arr IN/OUT -- array to be incremented
+ *  @param len IN -- size of arr in bytes
+ */
+static void arrInc(uint8_t arr[], unsigned int len)
+{
+    unsigned int i;
+    if (0 != arr) {
+        for (i = len; i > 0U; i--) {
+            if (++arr[i - 1] != 0U) {
+                break;
+            }
+        }
+    }
+}
+
+/**
+ *  @brief CTR PRNG update
+ *  Updates the internal state of supplied the CTR PRNG context
+ *  increments it by one
+ *  @return none
+ *  @note Assumes: providedData is (TC_AES_KEY_SIZE + TC_AES_BLOCK_SIZE) bytes long
+ *  @param ctx IN/OUT -- CTR PRNG state
+ *  @param providedData IN -- data used when updating the internal state
+ */
+static void tc_ctr_prng_update(TCCtrPrng_t *const ctx, uint8_t const *const providedData)
+{
+    if (0 != ctx) {
+        /* 10.2.1.2 step 1 */
+        uint8_t temp[TC_AES_KEY_SIZE + TC_AES_BLOCK_SIZE];
+        unsigned int len = 0U;
+
+        /* 10.2.1.2 step 2 */
+        while (len < sizeof temp) {
+            unsigned int blocklen = sizeof(temp) - len;
+            uint8_t output_block[TC_AES_BLOCK_SIZE];
+
+            /* 10.2.1.2 step 2.1 */
+            arrInc(ctx->V, sizeof ctx->V);
+
+            /* 10.2.1.2 step 2.2 */
+            if (blocklen > TC_AES_BLOCK_SIZE) {
+                blocklen = TC_AES_BLOCK_SIZE;
+            }
+            (void)tc_aes_encrypt(output_block, ctx->V, &ctx->key);
+
+            /* 10.2.1.2 step 2.3/step 3 */
+            memcpy(&(temp[len]), output_block, blocklen);
+
+            len += blocklen;
+        }
+
+        /* 10.2.1.2 step 4 */
+        if (0 != providedData) {
+            unsigned int i;
+            for (i = 0U; i < sizeof temp; i++) {
+                temp[i] ^= providedData[i];
+            }
+        }
+
+        /* 10.2.1.2 step 5 */
+        (void)tc_aes128_set_encrypt_key(&ctx->key, temp);
+
+        /* 10.2.1.2 step 6 */
+        memcpy(ctx->V, &(temp[TC_AES_KEY_SIZE]), TC_AES_BLOCK_SIZE);
+    }
+}
+
+int tc_ctr_prng_init(TCCtrPrng_t *const ctx,
+                     uint8_t const *const entropy,
+                     unsigned int entropyLen,
+                     uint8_t const *const personalization,
+                     unsigned int pLen)
+{
+    int result = TC_CRYPTO_FAIL;
+    unsigned int i;
+    uint8_t personalization_buf[TC_AES_KEY_SIZE + TC_AES_BLOCK_SIZE] = {0U};
+    uint8_t seed_material[TC_AES_KEY_SIZE + TC_AES_BLOCK_SIZE];
+    uint8_t zeroArr[TC_AES_BLOCK_SIZE] = {0U};
+
+    if (0 != personalization) {
+        /* 10.2.1.3.1 step 1 */
+        unsigned int len = pLen;
+        if (len > sizeof personalization_buf) {
+            len = sizeof personalization_buf;
+        }
+
+        /* 10.2.1.3.1 step 2 */
+        memcpy(personalization_buf, personalization, len);
+    }
+
+    if ((0 != ctx) && (0 != entropy) && (entropyLen >= sizeof seed_material)) {
+        /* 10.2.1.3.1 step 3 */
+        memcpy(seed_material, entropy, sizeof seed_material);
+        for (i = 0U; i < sizeof seed_material; i++) {
+            seed_material[i] ^= personalization_buf[i];
+        }
+
+        /* 10.2.1.3.1 step 4 */
+        (void)tc_aes128_set_encrypt_key(&ctx->key, zeroArr);
+
+        /* 10.2.1.3.1 step 5 */
+        memset(ctx->V,   0x00, sizeof ctx->V);
+
+        /* 10.2.1.3.1 step 6 */
+        tc_ctr_prng_update(ctx, seed_material);
+
+        /* 10.2.1.3.1 step 7 */
+        ctx->reseedCount = 1U;
+
+        result = TC_CRYPTO_SUCCESS;
+    }
+    return result;
+}
+
+int tc_ctr_prng_reseed(TCCtrPrng_t *const ctx,
+                       uint8_t const *const entropy,
+                       unsigned int entropyLen,
+                       uint8_t const *const additional_input,
+                       unsigned int additionallen)
+{
+    unsigned int i;
+    int result = TC_CRYPTO_FAIL;
+    uint8_t additional_input_buf[TC_AES_KEY_SIZE + TC_AES_BLOCK_SIZE] = {0U};
+    uint8_t seed_material[TC_AES_KEY_SIZE + TC_AES_BLOCK_SIZE];
+
+    if (0 != additional_input) {
+        /* 10.2.1.4.1 step 1 */
+        unsigned int len = additionallen;
+        if (len > sizeof additional_input_buf) {
+            len = sizeof additional_input_buf;
+        }
+
+        /* 10.2.1.4.1 step 2 */
+        memcpy(additional_input_buf, additional_input, len);
+    }
+
+    unsigned int seedlen = (unsigned int)TC_AES_KEY_SIZE + (unsigned int)TC_AES_BLOCK_SIZE;
+    if ((0 != ctx) && (entropyLen >= seedlen)) {
+        /* 10.2.1.4.1 step 3 */
+        memcpy(seed_material, entropy, sizeof seed_material);
+        for (i = 0U; i < sizeof seed_material; i++) {
+            seed_material[i] ^= additional_input_buf[i];
+        }
+
+        /* 10.2.1.4.1 step 4 */
+        tc_ctr_prng_update(ctx, seed_material);
+
+        /* 10.2.1.4.1 step 5 */
+        ctx->reseedCount = 1U;
+
+        result = TC_CRYPTO_SUCCESS;
+    }
+    return result;
+}
+
+int tc_ctr_prng_generate(TCCtrPrng_t *const ctx,
+                         uint8_t const *const additional_input,
+                         unsigned int additionallen,
+                         uint8_t *const out,
+                         unsigned int outlen)
+{
+    /* 2^48 - see section 10.2.1 */
+    static const uint64_t MAX_REQS_BEFORE_RESEED = 0x1000000000000ULL;
+
+    /* 2^19 bits - see section 10.2.1 */
+    static const unsigned int MAX_BYTES_PER_REQ = 65536U;
+
+    unsigned int result = TC_CRYPTO_FAIL;
+
+    if ((0 != ctx) && (0 != out) && (outlen < MAX_BYTES_PER_REQ)) {
+        /* 10.2.1.5.1 step 1 */
+        if (ctx->reseedCount > MAX_REQS_BEFORE_RESEED) {
+            result = TC_CTR_PRNG_RESEED_REQ;
+        } else {
+            uint8_t additional_input_buf[TC_AES_KEY_SIZE + TC_AES_BLOCK_SIZE] = {0U};
+            if (0 != additional_input) {
+                /* 10.2.1.5.1 step 2  */
+                unsigned int len = additionallen;
+                if (len > sizeof additional_input_buf) {
+                    len = sizeof additional_input_buf;
+                }
+                memcpy(additional_input_buf, additional_input, len);
+                tc_ctr_prng_update(ctx, additional_input_buf);
+            }
+
+            /* 10.2.1.5.1 step 3 - implicit */
+
+            /* 10.2.1.5.1 step 4 */
+            unsigned int len = 0U;
+            while (len < outlen) {
+                unsigned int blocklen = outlen - len;
+                uint8_t output_block[TC_AES_BLOCK_SIZE];
+
+                /* 10.2.1.5.1 step 4.1 */
+                arrInc(ctx->V, sizeof ctx->V);
+
+                /* 10.2.1.5.1 step 4.2 */
+                (void)tc_aes_encrypt(output_block, ctx->V, &ctx->key);
+
+                /* 10.2.1.5.1 step 4.3/step 5 */
+                if (blocklen > TC_AES_BLOCK_SIZE) {
+                    blocklen = TC_AES_BLOCK_SIZE;
+                }
+                memcpy(&(out[len]), output_block, blocklen);
+
+                len += blocklen;
+            }
+
+            /* 10.2.1.5.1 step 6 */
+            tc_ctr_prng_update(ctx, additional_input_buf);
+
+            /* 10.2.1.5.1 step 7 */
+            ctx->reseedCount++;
+
+            /* 10.2.1.5.1 step 8 */
+            result = TC_CRYPTO_SUCCESS;
+        }
+    }
+
+    return result;
+}
+
+void tc_ctr_prng_uninstantiate(TCCtrPrng_t *const ctx)
+{
+    if (0 != ctx) {
+        memset(ctx->key.words, 0x00, sizeof ctx->key.words);
+        memset(ctx->V,         0x00, sizeof ctx->V);
+        ctx->reseedCount = 0U;
+    }
+}

components/bt/esp_ble_mesh/mesh_common/tinycrypt/src/ecc.c

@@ -0,0 +1,939 @@
+/* ecc.c - TinyCrypt implementation of common ECC functions */
+
+/*
+ * Copyright (c) 2014, Kenneth MacKay
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <tinycrypt/ecc.h>
+#include <tinycrypt/ecc_platform_specific.h>
+#include <string.h>
+
+/* IMPORTANT: Make sure a cryptographically-secure PRNG is set and the platform
+ * has access to enough entropy in order to feed the PRNG regularly. */
+#if default_RNG_defined
+static uECC_RNG_Function g_rng_function = &default_CSPRNG;
+#else
+static uECC_RNG_Function g_rng_function = 0;
+#endif
+
+void uECC_set_rng(uECC_RNG_Function rng_function)
+{
+    g_rng_function = rng_function;
+}
+
+uECC_RNG_Function uECC_get_rng(void)
+{
+    return g_rng_function;
+}
+
+int uECC_curve_private_key_size(uECC_Curve curve)
+{
+    return BITS_TO_BYTES(curve->num_n_bits);
+}
+
+int uECC_curve_public_key_size(uECC_Curve curve)
+{
+    return 2 * curve->num_bytes;
+}
+
+void uECC_vli_clear(uECC_word_t *vli, wordcount_t num_words)
+{
+    wordcount_t i;
+    for (i = 0; i < num_words; ++i) {
+        vli[i] = 0;
+    }
+}
+
+uECC_word_t uECC_vli_isZero(const uECC_word_t *vli, wordcount_t num_words)
+{
+    uECC_word_t bits = 0;
+    wordcount_t i;
+    for (i = 0; i < num_words; ++i) {
+        bits |= vli[i];
+    }
+    return (bits == 0);
+}
+
+uECC_word_t uECC_vli_testBit(const uECC_word_t *vli, bitcount_t bit)
+{
+    return (vli[bit >> uECC_WORD_BITS_SHIFT] &
+            ((uECC_word_t)1 << (bit & uECC_WORD_BITS_MASK)));
+}
+
+/* Counts the number of words in vli. */
+static wordcount_t vli_numDigits(const uECC_word_t *vli,
+                                 const wordcount_t max_words)
+{
+
+    wordcount_t i;
+    /* Search from the end until we find a non-zero digit. We do it in reverse
+     * because we expect that most digits will be nonzero. */
+    for (i = max_words - 1; i >= 0 && vli[i] == 0; --i) {
+    }
+
+    return (i + 1);
+}
+
+bitcount_t uECC_vli_numBits(const uECC_word_t *vli,
+                            const wordcount_t max_words)
+{
+
+    uECC_word_t i;
+    uECC_word_t digit;
+
+    wordcount_t num_digits = vli_numDigits(vli, max_words);
+    if (num_digits == 0) {
+        return 0;
+    }
+
+    digit = vli[num_digits - 1];
+    for (i = 0; digit; ++i) {
+        digit >>= 1;
+    }
+
+    return (((bitcount_t)(num_digits - 1) << uECC_WORD_BITS_SHIFT) + i);
+}
+
+void uECC_vli_set(uECC_word_t *dest, const uECC_word_t *src,
+                  wordcount_t num_words)
+{
+    wordcount_t i;
+
+    for (i = 0; i < num_words; ++i) {
+        dest[i] = src[i];
+    }
+}
+
+cmpresult_t uECC_vli_cmp_unsafe(const uECC_word_t *left,
+                                const uECC_word_t *right,
+                                wordcount_t num_words)
+{
+    wordcount_t i;
+
+    for (i = num_words - 1; i >= 0; --i) {
+        if (left[i] > right[i]) {
+            return 1;
+        } else if (left[i] < right[i]) {
+            return -1;
+        }
+    }
+    return 0;
+}
+
+uECC_word_t uECC_vli_equal(const uECC_word_t *left, const uECC_word_t *right,
+                           wordcount_t num_words)
+{
+
+    uECC_word_t diff = 0;
+    wordcount_t i;
+
+    for (i = num_words - 1; i >= 0; --i) {
+        diff |= (left[i] ^ right[i]);
+    }
+    return !(diff == 0);
+}
+
+uECC_word_t cond_set(uECC_word_t p_true, uECC_word_t p_false, unsigned int cond)
+{
+    return (p_true * (cond)) | (p_false * (!cond));
+}
+
+/* Computes result = left - right, returning borrow, in constant time.
+ * Can modify in place. */
+uECC_word_t uECC_vli_sub(uECC_word_t *result, const uECC_word_t *left,
+                         const uECC_word_t *right, wordcount_t num_words)
+{
+    uECC_word_t borrow = 0;
+    wordcount_t i;
+    for (i = 0; i < num_words; ++i) {
+        uECC_word_t diff = left[i] - right[i] - borrow;
+        uECC_word_t val = (diff > left[i]);
+        borrow = cond_set(val, borrow, (diff != left[i]));
+
+        result[i] = diff;
+    }
+    return borrow;
+}
+
+/* Computes result = left + right, returning carry, in constant time.
+ * Can modify in place. */
+static uECC_word_t uECC_vli_add(uECC_word_t *result, const uECC_word_t *left,
+                                const uECC_word_t *right, wordcount_t num_words)
+{
+    uECC_word_t carry = 0;
+    wordcount_t i;
+    for (i = 0; i < num_words; ++i) {
+        uECC_word_t sum = left[i] + right[i] + carry;
+        uECC_word_t val = (sum < left[i]);
+        carry = cond_set(val, carry, (sum != left[i]));
+        result[i] = sum;
+    }
+    return carry;
+}
+
+cmpresult_t uECC_vli_cmp(const uECC_word_t *left, const uECC_word_t *right,
+                         wordcount_t num_words)
+{
+    uECC_word_t tmp[NUM_ECC_WORDS];
+    uECC_word_t neg = !!uECC_vli_sub(tmp, left, right, num_words);
+    uECC_word_t equal = uECC_vli_isZero(tmp, num_words);
+    return (!equal - 2 * neg);
+}
+
+/* Computes vli = vli >> 1. */
+static void uECC_vli_rshift1(uECC_word_t *vli, wordcount_t num_words)
+{
+    uECC_word_t *end = vli;
+    uECC_word_t carry = 0;
+
+    vli += num_words;
+    while (vli-- > end) {
+        uECC_word_t temp = *vli;
+        *vli = (temp >> 1) | carry;
+        carry = temp << (uECC_WORD_BITS - 1);
+    }
+}
+
+static void muladd(uECC_word_t a, uECC_word_t b, uECC_word_t *r0,
+                   uECC_word_t *r1, uECC_word_t *r2)
+{
+
+    uECC_dword_t p = (uECC_dword_t)a * b;
+    uECC_dword_t r01 = ((uECC_dword_t)(*r1) << uECC_WORD_BITS) | *r0;
+    r01 += p;
+    *r2 += (r01 < p);
+    *r1 = r01 >> uECC_WORD_BITS;
+    *r0 = (uECC_word_t)r01;
+
+}
+
+/* Computes result = left * right. Result must be 2 * num_words long. */
+static void uECC_vli_mult(uECC_word_t *result, const uECC_word_t *left,
+                          const uECC_word_t *right, wordcount_t num_words)
+{
+
+    uECC_word_t r0 = 0;
+    uECC_word_t r1 = 0;
+    uECC_word_t r2 = 0;
+    wordcount_t i, k;
+
+    /* Compute each digit of result in sequence, maintaining the carries. */
+    for (k = 0; k < num_words; ++k) {
+
+        for (i = 0; i <= k; ++i) {
+            muladd(left[i], right[k - i], &r0, &r1, &r2);
+        }
+
+        result[k] = r0;
+        r0 = r1;
+        r1 = r2;
+        r2 = 0;
+    }
+
+    for (k = num_words; k < num_words * 2 - 1; ++k) {
+
+        for (i = (k + 1) - num_words; i < num_words; ++i) {
+            muladd(left[i], right[k - i], &r0, &r1, &r2);
+        }
+        result[k] = r0;
+        r0 = r1;
+        r1 = r2;
+        r2 = 0;
+    }
+    result[num_words * 2 - 1] = r0;
+}
+
+void uECC_vli_modAdd(uECC_word_t *result, const uECC_word_t *left,
+                     const uECC_word_t *right, const uECC_word_t *mod,
+                     wordcount_t num_words)
+{
+    uECC_word_t carry = uECC_vli_add(result, left, right, num_words);
+    if (carry || uECC_vli_cmp_unsafe(mod, result, num_words) != 1) {
+        /* result > mod (result = mod + remainder), so subtract mod to get
+         * remainder. */
+        uECC_vli_sub(result, result, mod, num_words);
+    }
+}
+
+void uECC_vli_modSub(uECC_word_t *result, const uECC_word_t *left,
+                     const uECC_word_t *right, const uECC_word_t *mod,
+                     wordcount_t num_words)
+{
+    uECC_word_t l_borrow = uECC_vli_sub(result, left, right, num_words);
+    if (l_borrow) {
+        /* In this case, result == -diff == (max int) - diff. Since -x % d == d - x,
+         * we can get the correct result from result + mod (with overflow). */
+        uECC_vli_add(result, result, mod, num_words);
+    }
+}
+
+/* Computes result = product % mod, where product is 2N words long. */
+/* Currently only designed to work for curve_p or curve_n. */
+void uECC_vli_mmod(uECC_word_t *result, uECC_word_t *product,
+                   const uECC_word_t *mod, wordcount_t num_words)
+{
+    uECC_word_t mod_multiple[2 * NUM_ECC_WORDS];
+    uECC_word_t tmp[2 * NUM_ECC_WORDS];
+    uECC_word_t *v[2] = {tmp, product};
+    uECC_word_t index;
+
+    /* Shift mod so its highest set bit is at the maximum position. */
+    bitcount_t shift = (num_words * 2 * uECC_WORD_BITS) -
+                       uECC_vli_numBits(mod, num_words);
+    wordcount_t word_shift = shift / uECC_WORD_BITS;
+    wordcount_t bit_shift = shift % uECC_WORD_BITS;
+    uECC_word_t carry = 0;
+    uECC_vli_clear(mod_multiple, word_shift);
+    if (bit_shift > 0) {
+        for (index = 0; index < (uECC_word_t)num_words; ++index) {
+            mod_multiple[word_shift + index] = (mod[index] << bit_shift) | carry;
+            carry = mod[index] >> (uECC_WORD_BITS - bit_shift);
+        }
+    } else {
+        uECC_vli_set(mod_multiple + word_shift, mod, num_words);
+    }
+
+    for (index = 1; shift >= 0; --shift) {
+        uECC_word_t borrow = 0;
+        wordcount_t i;
+        for (i = 0; i < num_words * 2; ++i) {
+            uECC_word_t diff = v[index][i] - mod_multiple[i] - borrow;
+            if (diff != v[index][i]) {
+                borrow = (diff > v[index][i]);
+            }
+            v[1 - index][i] = diff;
+        }
+        /* Swap the index if there was no borrow */
+        index = !(index ^ borrow);
+        uECC_vli_rshift1(mod_multiple, num_words);
+        mod_multiple[num_words - 1] |= mod_multiple[num_words] <<
+                                       (uECC_WORD_BITS - 1);
+        uECC_vli_rshift1(mod_multiple + num_words, num_words);
+    }
+    uECC_vli_set(result, v[index], num_words);
+}
+
+void uECC_vli_modMult(uECC_word_t *result, const uECC_word_t *left,
+                      const uECC_word_t *right, const uECC_word_t *mod,
+                      wordcount_t num_words)
+{
+    uECC_word_t product[2 * NUM_ECC_WORDS];
+    uECC_vli_mult(product, left, right, num_words);
+    uECC_vli_mmod(result, product, mod, num_words);
+}
+
+void uECC_vli_modMult_fast(uECC_word_t *result, const uECC_word_t *left,
+                           const uECC_word_t *right, uECC_Curve curve)
+{
+    uECC_word_t product[2 * NUM_ECC_WORDS];
+    uECC_vli_mult(product, left, right, curve->num_words);
+
+    curve->mmod_fast(result, product);
+}
+
+static void uECC_vli_modSquare_fast(uECC_word_t *result,
+                                    const uECC_word_t *left,
+                                    uECC_Curve curve)
+{
+    uECC_vli_modMult_fast(result, left, left, curve);
+}
+
+
+#define EVEN(vli) (!(vli[0] & 1))
+
+static void vli_modInv_update(uECC_word_t *uv,
+                              const uECC_word_t *mod,
+                              wordcount_t num_words)
+{
+
+    uECC_word_t carry = 0;
+
+    if (!EVEN(uv)) {
+        carry = uECC_vli_add(uv, uv, mod, num_words);
+    }
+    uECC_vli_rshift1(uv, num_words);
+    if (carry) {
+        uv[num_words - 1] |= HIGH_BIT_SET;
+    }
+}
+
+void uECC_vli_modInv(uECC_word_t *result, const uECC_word_t *input,
+                     const uECC_word_t *mod, wordcount_t num_words)
+{
+    uECC_word_t a[NUM_ECC_WORDS], b[NUM_ECC_WORDS];
+    uECC_word_t u[NUM_ECC_WORDS], v[NUM_ECC_WORDS];
+    cmpresult_t cmpResult;
+
+    if (uECC_vli_isZero(input, num_words)) {
+        uECC_vli_clear(result, num_words);
+        return;
+    }
+
+    uECC_vli_set(a, input, num_words);
+    uECC_vli_set(b, mod, num_words);
+    uECC_vli_clear(u, num_words);
+    u[0] = 1;
+    uECC_vli_clear(v, num_words);
+    while ((cmpResult = uECC_vli_cmp_unsafe(a, b, num_words)) != 0) {
+        if (EVEN(a)) {
+            uECC_vli_rshift1(a, num_words);
+            vli_modInv_update(u, mod, num_words);
+        } else if (EVEN(b)) {
+            uECC_vli_rshift1(b, num_words);
+            vli_modInv_update(v, mod, num_words);
+        } else if (cmpResult > 0) {
+            uECC_vli_sub(a, a, b, num_words);
+            uECC_vli_rshift1(a, num_words);
+            if (uECC_vli_cmp_unsafe(u, v, num_words) < 0) {
+                uECC_vli_add(u, u, mod, num_words);
+            }
+            uECC_vli_sub(u, u, v, num_words);
+            vli_modInv_update(u, mod, num_words);
+        } else {
+            uECC_vli_sub(b, b, a, num_words);
+            uECC_vli_rshift1(b, num_words);
+            if (uECC_vli_cmp_unsafe(v, u, num_words) < 0) {
+                uECC_vli_add(v, v, mod, num_words);
+            }
+            uECC_vli_sub(v, v, u, num_words);
+            vli_modInv_update(v, mod, num_words);
+        }
+    }
+    uECC_vli_set(result, u, num_words);
+}
+
+/* ------ Point operations ------ */
+
+void double_jacobian_default(uECC_word_t *X1, uECC_word_t *Y1,
+                             uECC_word_t *Z1, uECC_Curve curve)
+{
+    /* t1 = X, t2 = Y, t3 = Z */
+    uECC_word_t t4[NUM_ECC_WORDS];
+    uECC_word_t t5[NUM_ECC_WORDS];
+    wordcount_t num_words = curve->num_words;
+
+    if (uECC_vli_isZero(Z1, num_words)) {
+        return;
+    }
+
+    uECC_vli_modSquare_fast(t4, Y1, curve);   /* t4 = y1^2 */
+    uECC_vli_modMult_fast(t5, X1, t4, curve); /* t5 = x1*y1^2 = A */
+    uECC_vli_modSquare_fast(t4, t4, curve);   /* t4 = y1^4 */
+    uECC_vli_modMult_fast(Y1, Y1, Z1, curve); /* t2 = y1*z1 = z3 */
+    uECC_vli_modSquare_fast(Z1, Z1, curve);   /* t3 = z1^2 */
+
+    uECC_vli_modAdd(X1, X1, Z1, curve->p, num_words); /* t1 = x1 + z1^2 */
+    uECC_vli_modAdd(Z1, Z1, Z1, curve->p, num_words); /* t3 = 2*z1^2 */
+    uECC_vli_modSub(Z1, X1, Z1, curve->p, num_words); /* t3 = x1 - z1^2 */
+    uECC_vli_modMult_fast(X1, X1, Z1, curve); /* t1 = x1^2 - z1^4 */
+
+    uECC_vli_modAdd(Z1, X1, X1, curve->p, num_words); /* t3 = 2*(x1^2 - z1^4) */
+    uECC_vli_modAdd(X1, X1, Z1, curve->p, num_words); /* t1 = 3*(x1^2 - z1^4) */
+    if (uECC_vli_testBit(X1, 0)) {
+        uECC_word_t l_carry = uECC_vli_add(X1, X1, curve->p, num_words);
+        uECC_vli_rshift1(X1, num_words);
+        X1[num_words - 1] |= l_carry << (uECC_WORD_BITS - 1);
+    } else {
+        uECC_vli_rshift1(X1, num_words);
+    }
+
+    /* t1 = 3/2*(x1^2 - z1^4) = B */
+    uECC_vli_modSquare_fast(Z1, X1, curve); /* t3 = B^2 */
+    uECC_vli_modSub(Z1, Z1, t5, curve->p, num_words); /* t3 = B^2 - A */
+    uECC_vli_modSub(Z1, Z1, t5, curve->p, num_words); /* t3 = B^2 - 2A = x3 */
+    uECC_vli_modSub(t5, t5, Z1, curve->p, num_words); /* t5 = A - x3 */
+    uECC_vli_modMult_fast(X1, X1, t5, curve); /* t1 = B * (A - x3) */
+    /* t4 = B * (A - x3) - y1^4 = y3: */
+    uECC_vli_modSub(t4, X1, t4, curve->p, num_words);
+
+    uECC_vli_set(X1, Z1, num_words);
+    uECC_vli_set(Z1, Y1, num_words);
+    uECC_vli_set(Y1, t4, num_words);
+}
+
+void x_side_default(uECC_word_t *result,
+                    const uECC_word_t *x,
+                    uECC_Curve curve)
+{
+    uECC_word_t _3[NUM_ECC_WORDS] = {3}; /* -a = 3 */
+    wordcount_t num_words = curve->num_words;
+
+    uECC_vli_modSquare_fast(result, x, curve); /* r = x^2 */
+    uECC_vli_modSub(result, result, _3, curve->p, num_words); /* r = x^2 - 3 */
+    uECC_vli_modMult_fast(result, result, x, curve); /* r = x^3 - 3x */
+    /* r = x^3 - 3x + b: */
+    uECC_vli_modAdd(result, result, curve->b, curve->p, num_words);
+}
+
+uECC_Curve uECC_secp256r1(void)
+{
+    return &curve_secp256r1;
+}
+
+void vli_mmod_fast_secp256r1(unsigned int *result, unsigned int *product)
+{
+    unsigned int tmp[NUM_ECC_WORDS];
+    int carry;
+
+    /* t */
+    uECC_vli_set(result, product, NUM_ECC_WORDS);
+
+    /* s1 */
+    tmp[0] = tmp[1] = tmp[2] = 0;
+    tmp[3] = product[11];
+    tmp[4] = product[12];
+    tmp[5] = product[13];
+    tmp[6] = product[14];
+    tmp[7] = product[15];
+    carry = uECC_vli_add(tmp, tmp, tmp, NUM_ECC_WORDS);
+    carry += uECC_vli_add(result, result, tmp, NUM_ECC_WORDS);
+
+    /* s2 */
+    tmp[3] = product[12];
+    tmp[4] = product[13];
+    tmp[5] = product[14];
+    tmp[6] = product[15];
+    tmp[7] = 0;
+    carry += uECC_vli_add(tmp, tmp, tmp, NUM_ECC_WORDS);
+    carry += uECC_vli_add(result, result, tmp, NUM_ECC_WORDS);
+
+    /* s3 */
+    tmp[0] = product[8];
+    tmp[1] = product[9];
+    tmp[2] = product[10];
+    tmp[3] = tmp[4] = tmp[5] = 0;
+    tmp[6] = product[14];
+    tmp[7] = product[15];
+    carry += uECC_vli_add(result, result, tmp, NUM_ECC_WORDS);
+
+    /* s4 */
+    tmp[0] = product[9];
+    tmp[1] = product[10];
+    tmp[2] = product[11];
+    tmp[3] = product[13];
+    tmp[4] = product[14];
+    tmp[5] = product[15];
+    tmp[6] = product[13];
+    tmp[7] = product[8];
+    carry += uECC_vli_add(result, result, tmp, NUM_ECC_WORDS);
+
+    /* d1 */
+    tmp[0] = product[11];
+    tmp[1] = product[12];
+    tmp[2] = product[13];
+    tmp[3] = tmp[4] = tmp[5] = 0;
+    tmp[6] = product[8];
+    tmp[7] = product[10];
+    carry -= uECC_vli_sub(result, result, tmp, NUM_ECC_WORDS);
+
+    /* d2 */
+    tmp[0] = product[12];
+    tmp[1] = product[13];
+    tmp[2] = product[14];
+    tmp[3] = product[15];
+    tmp[4] = tmp[5] = 0;
+    tmp[6] = product[9];
+    tmp[7] = product[11];
+    carry -= uECC_vli_sub(result, result, tmp, NUM_ECC_WORDS);
+
+    /* d3 */
+    tmp[0] = product[13];
+    tmp[1] = product[14];
+    tmp[2] = product[15];
+    tmp[3] = product[8];
+    tmp[4] = product[9];
+    tmp[5] = product[10];
+    tmp[6] = 0;
+    tmp[7] = product[12];
+    carry -= uECC_vli_sub(result, result, tmp, NUM_ECC_WORDS);
+
+    /* d4 */
+    tmp[0] = product[14];
+    tmp[1] = product[15];
+    tmp[2] = 0;
+    tmp[3] = product[9];
+    tmp[4] = product[10];
+    tmp[5] = product[11];
+    tmp[6] = 0;
+    tmp[7] = product[13];
+    carry -= uECC_vli_sub(result, result, tmp, NUM_ECC_WORDS);
+
+    if (carry < 0) {
+        do {
+            carry += uECC_vli_add(result, result, curve_secp256r1.p, NUM_ECC_WORDS);
+        } while (carry < 0);
+    } else  {
+        while (carry ||
+                uECC_vli_cmp_unsafe(curve_secp256r1.p, result, NUM_ECC_WORDS) != 1) {
+            carry -= uECC_vli_sub(result, result, curve_secp256r1.p, NUM_ECC_WORDS);
+        }
+    }
+}
+
+uECC_word_t EccPoint_isZero(const uECC_word_t *point, uECC_Curve curve)
+{
+    return uECC_vli_isZero(point, curve->num_words * 2);
+}
+
+void apply_z(uECC_word_t *X1, uECC_word_t *Y1, const uECC_word_t *const Z,
+             uECC_Curve curve)
+{
+    uECC_word_t t1[NUM_ECC_WORDS];
+
+    uECC_vli_modSquare_fast(t1, Z, curve);    /* z^2 */
+    uECC_vli_modMult_fast(X1, X1, t1, curve); /* x1 * z^2 */
+    uECC_vli_modMult_fast(t1, t1, Z, curve);  /* z^3 */
+    uECC_vli_modMult_fast(Y1, Y1, t1, curve); /* y1 * z^3 */
+}
+
+/* P = (x1, y1) => 2P, (x2, y2) => P' */
+static void XYcZ_initial_double(uECC_word_t *X1, uECC_word_t *Y1,
+                                uECC_word_t *X2, uECC_word_t *Y2,
+                                const uECC_word_t *const initial_Z,
+                                uECC_Curve curve)
+{
+    uECC_word_t z[NUM_ECC_WORDS];
+    wordcount_t num_words = curve->num_words;
+    if (initial_Z) {
+        uECC_vli_set(z, initial_Z, num_words);
+    } else {
+        uECC_vli_clear(z, num_words);
+        z[0] = 1;
+    }
+
+    uECC_vli_set(X2, X1, num_words);
+    uECC_vli_set(Y2, Y1, num_words);
+
+    apply_z(X1, Y1, z, curve);
+    curve->double_jacobian(X1, Y1, z, curve);
+    apply_z(X2, Y2, z, curve);
+}
+
+void XYcZ_add(uECC_word_t *X1, uECC_word_t *Y1,
+              uECC_word_t *X2, uECC_word_t *Y2,
+              uECC_Curve curve)
+{
+    /* t1 = X1, t2 = Y1, t3 = X2, t4 = Y2 */
+    uECC_word_t t5[NUM_ECC_WORDS];
+    wordcount_t num_words = curve->num_words;
+
+    uECC_vli_modSub(t5, X2, X1, curve->p, num_words); /* t5 = x2 - x1 */
+    uECC_vli_modSquare_fast(t5, t5, curve); /* t5 = (x2 - x1)^2 = A */
+    uECC_vli_modMult_fast(X1, X1, t5, curve); /* t1 = x1*A = B */
+    uECC_vli_modMult_fast(X2, X2, t5, curve); /* t3 = x2*A = C */
+    uECC_vli_modSub(Y2, Y2, Y1, curve->p, num_words); /* t4 = y2 - y1 */
+    uECC_vli_modSquare_fast(t5, Y2, curve); /* t5 = (y2 - y1)^2 = D */
+
+    uECC_vli_modSub(t5, t5, X1, curve->p, num_words); /* t5 = D - B */
+    uECC_vli_modSub(t5, t5, X2, curve->p, num_words); /* t5 = D - B - C = x3 */
+    uECC_vli_modSub(X2, X2, X1, curve->p, num_words); /* t3 = C - B */
+    uECC_vli_modMult_fast(Y1, Y1, X2, curve); /* t2 = y1*(C - B) */
+    uECC_vli_modSub(X2, X1, t5, curve->p, num_words); /* t3 = B - x3 */
+    uECC_vli_modMult_fast(Y2, Y2, X2, curve); /* t4 = (y2 - y1)*(B - x3) */
+    uECC_vli_modSub(Y2, Y2, Y1, curve->p, num_words); /* t4 = y3 */
+
+    uECC_vli_set(X2, t5, num_words);
+}
+
+/* Input P = (x1, y1, Z), Q = (x2, y2, Z)
+   Output P + Q = (x3, y3, Z3), P - Q = (x3', y3', Z3)
+   or P => P - Q, Q => P + Q
+ */
+static void XYcZ_addC(uECC_word_t *X1, uECC_word_t *Y1,
+                      uECC_word_t *X2, uECC_word_t *Y2,
+                      uECC_Curve curve)
+{
+    /* t1 = X1, t2 = Y1, t3 = X2, t4 = Y2 */
+    uECC_word_t t5[NUM_ECC_WORDS];
+    uECC_word_t t6[NUM_ECC_WORDS];
+    uECC_word_t t7[NUM_ECC_WORDS];
+    wordcount_t num_words = curve->num_words;
+
+    uECC_vli_modSub(t5, X2, X1, curve->p, num_words); /* t5 = x2 - x1 */
+    uECC_vli_modSquare_fast(t5, t5, curve); /* t5 = (x2 - x1)^2 = A */
+    uECC_vli_modMult_fast(X1, X1, t5, curve); /* t1 = x1*A = B */
+    uECC_vli_modMult_fast(X2, X2, t5, curve); /* t3 = x2*A = C */
+    uECC_vli_modAdd(t5, Y2, Y1, curve->p, num_words); /* t5 = y2 + y1 */
+    uECC_vli_modSub(Y2, Y2, Y1, curve->p, num_words); /* t4 = y2 - y1 */
+
+    uECC_vli_modSub(t6, X2, X1, curve->p, num_words); /* t6 = C - B */
+    uECC_vli_modMult_fast(Y1, Y1, t6, curve); /* t2 = y1 * (C - B) = E */
+    uECC_vli_modAdd(t6, X1, X2, curve->p, num_words); /* t6 = B + C */
+    uECC_vli_modSquare_fast(X2, Y2, curve); /* t3 = (y2 - y1)^2 = D */
+    uECC_vli_modSub(X2, X2, t6, curve->p, num_words); /* t3 = D - (B + C) = x3 */
+
+    uECC_vli_modSub(t7, X1, X2, curve->p, num_words); /* t7 = B - x3 */
+    uECC_vli_modMult_fast(Y2, Y2, t7, curve); /* t4 = (y2 - y1)*(B - x3) */
+    /* t4 = (y2 - y1)*(B - x3) - E = y3: */
+    uECC_vli_modSub(Y2, Y2, Y1, curve->p, num_words);
+
+    uECC_vli_modSquare_fast(t7, t5, curve); /* t7 = (y2 + y1)^2 = F */
+    uECC_vli_modSub(t7, t7, t6, curve->p, num_words); /* t7 = F - (B + C) = x3' */
+    uECC_vli_modSub(t6, t7, X1, curve->p, num_words); /* t6 = x3' - B */
+    uECC_vli_modMult_fast(t6, t6, t5, curve); /* t6 = (y2+y1)*(x3' - B) */
+    /* t2 = (y2+y1)*(x3' - B) - E = y3': */
+    uECC_vli_modSub(Y1, t6, Y1, curve->p, num_words);
+
+    uECC_vli_set(X1, t7, num_words);
+}
+
+void EccPoint_mult(uECC_word_t *result, const uECC_word_t *point,
+                   const uECC_word_t *scalar,
+                   const uECC_word_t *initial_Z,
+                   bitcount_t num_bits, uECC_Curve curve)
+{
+    /* R0 and R1 */
+    uECC_word_t Rx[2][NUM_ECC_WORDS];
+    uECC_word_t Ry[2][NUM_ECC_WORDS];
+    uECC_word_t z[NUM_ECC_WORDS];
+    bitcount_t i;
+    uECC_word_t nb;
+    wordcount_t num_words = curve->num_words;
+
+    uECC_vli_set(Rx[1], point, num_words);
+    uECC_vli_set(Ry[1], point + num_words, num_words);
+
+    XYcZ_initial_double(Rx[1], Ry[1], Rx[0], Ry[0], initial_Z, curve);
+
+    for (i = num_bits - 2; i > 0; --i) {
+        nb = !uECC_vli_testBit(scalar, i);
+        XYcZ_addC(Rx[1 - nb], Ry[1 - nb], Rx[nb], Ry[nb], curve);
+        XYcZ_add(Rx[nb], Ry[nb], Rx[1 - nb], Ry[1 - nb], curve);
+    }
+
+    nb = !uECC_vli_testBit(scalar, 0);
+    XYcZ_addC(Rx[1 - nb], Ry[1 - nb], Rx[nb], Ry[nb], curve);
+
+    /* Find final 1/Z value. */
+    uECC_vli_modSub(z, Rx[1], Rx[0], curve->p, num_words); /* X1 - X0 */
+    uECC_vli_modMult_fast(z, z, Ry[1 - nb], curve); /* Yb * (X1 - X0) */
+    uECC_vli_modMult_fast(z, z, point, curve); /* xP * Yb * (X1 - X0) */
+    uECC_vli_modInv(z, z, curve->p, num_words); /* 1 / (xP * Yb * (X1 - X0))*/
+    /* yP / (xP * Yb * (X1 - X0)) */
+    uECC_vli_modMult_fast(z, z, point + num_words, curve);
+    /* Xb * yP / (xP * Yb * (X1 - X0)) */
+    uECC_vli_modMult_fast(z, z, Rx[1 - nb], curve);
+    /* End 1/Z calculation */
+
+    XYcZ_add(Rx[nb], Ry[nb], Rx[1 - nb], Ry[1 - nb], curve);
+    apply_z(Rx[0], Ry[0], z, curve);
+
+    uECC_vli_set(result, Rx[0], num_words);
+    uECC_vli_set(result + num_words, Ry[0], num_words);
+}
+
+uECC_word_t regularize_k(const uECC_word_t *const k, uECC_word_t *k0,
+                         uECC_word_t *k1, uECC_Curve curve)
+{
+
+    wordcount_t num_n_words = BITS_TO_WORDS(curve->num_n_bits);
+
+    bitcount_t num_n_bits = curve->num_n_bits;
+
+    uECC_word_t carry = uECC_vli_add(k0, k, curve->n, num_n_words) ||
+                        (num_n_bits < ((bitcount_t)num_n_words * uECC_WORD_SIZE * 8) &&
+                         uECC_vli_testBit(k0, num_n_bits));
+
+    uECC_vli_add(k1, k0, curve->n, num_n_words);
+
+    return carry;
+}
+
+uECC_word_t EccPoint_compute_public_key(uECC_word_t *result,
+                                        uECC_word_t *private_key,
+                                        uECC_Curve curve)
+{
+
+    uECC_word_t tmp1[NUM_ECC_WORDS];
+    uECC_word_t tmp2[NUM_ECC_WORDS];
+    uECC_word_t *p2[2] = {tmp1, tmp2};
+    uECC_word_t carry;
+
+    /* Regularize the bitcount for the private key so that attackers cannot
+     * use a side channel attack to learn the number of leading zeros. */
+    carry = regularize_k(private_key, tmp1, tmp2, curve);
+
+    EccPoint_mult(result, curve->G, p2[!carry], 0, curve->num_n_bits + 1, curve);
+
+    if (EccPoint_isZero(result, curve)) {
+        return 0;
+    }
+    return 1;
+}
+
+/* Converts an integer in uECC native format to big-endian bytes. */
+void uECC_vli_nativeToBytes(uint8_t *bytes, int num_bytes,
+                            const unsigned int *native)
+{
+    wordcount_t i;
+    for (i = 0; i < num_bytes; ++i) {
+        unsigned b = num_bytes - 1 - i;
+        bytes[i] = native[b / uECC_WORD_SIZE] >> (8 * (b % uECC_WORD_SIZE));
+    }
+}
+
+/* Converts big-endian bytes to an integer in uECC native format. */
+void uECC_vli_bytesToNative(unsigned int *native, const uint8_t *bytes,
+                            int num_bytes)
+{
+    wordcount_t i;
+    uECC_vli_clear(native, (num_bytes + (uECC_WORD_SIZE - 1)) / uECC_WORD_SIZE);
+    for (i = 0; i < num_bytes; ++i) {
+        unsigned b = num_bytes - 1 - i;
+        native[b / uECC_WORD_SIZE] |=
+            (uECC_word_t)bytes[i] << (8 * (b % uECC_WORD_SIZE));
+    }
+}
+
+int uECC_generate_random_int(uECC_word_t *random, const uECC_word_t *top,
+                             wordcount_t num_words)
+{
+    uECC_word_t mask = (uECC_word_t) - 1;
+    uECC_word_t tries;
+    bitcount_t num_bits = uECC_vli_numBits(top, num_words);
+
+    if (!g_rng_function) {
+        return 0;
+    }
+
+    for (tries = 0; tries < uECC_RNG_MAX_TRIES; ++tries) {
+        if (!g_rng_function((uint8_t *)random, num_words * uECC_WORD_SIZE)) {
+            return 0;
+        }
+        random[num_words - 1] &=
+            mask >> ((bitcount_t)(num_words * uECC_WORD_SIZE * 8 - num_bits));
+        if (!uECC_vli_isZero(random, num_words) &&
+                uECC_vli_cmp(top, random, num_words) == 1) {
+            return 1;
+        }
+    }
+    return 0;
+}
+
+
+int uECC_valid_point(const uECC_word_t *point, uECC_Curve curve)
+{
+    uECC_word_t tmp1[NUM_ECC_WORDS];
+    uECC_word_t tmp2[NUM_ECC_WORDS];
+    wordcount_t num_words = curve->num_words;
+
+    /* The point at infinity is invalid. */
+    if (EccPoint_isZero(point, curve)) {
+        return -1;
+    }
+
+    /* x and y must be smaller than p. */
+    if (uECC_vli_cmp_unsafe(curve->p, point, num_words) != 1 ||
+            uECC_vli_cmp_unsafe(curve->p, point + num_words, num_words) != 1) {
+        return -2;
+    }
+
+    uECC_vli_modSquare_fast(tmp1, point + num_words, curve);
+    curve->x_side(tmp2, point, curve); /* tmp2 = x^3 + ax + b */
+
+    /* Make sure that y^2 == x^3 + ax + b */
+    if (uECC_vli_equal(tmp1, tmp2, num_words) != 0) {
+        return -3;
+    }
+
+    return 0;
+}
+
+int uECC_valid_public_key(const uint8_t *public_key, uECC_Curve curve)
+{
+
+    uECC_word_t _public[NUM_ECC_WORDS * 2];
+
+    uECC_vli_bytesToNative(_public, public_key, curve->num_bytes);
+    uECC_vli_bytesToNative(
+        _public + curve->num_words,
+        public_key + curve->num_bytes,
+        curve->num_bytes);
+
+    if (uECC_vli_cmp_unsafe(_public, curve->G, NUM_ECC_WORDS * 2) == 0) {
+        return -4;
+    }
+
+    return uECC_valid_point(_public, curve);
+}
+
+int uECC_compute_public_key(const uint8_t *private_key, uint8_t *public_key,
+                            uECC_Curve curve)
+{
+
+    uECC_word_t _private[NUM_ECC_WORDS];
+    uECC_word_t _public[NUM_ECC_WORDS * 2];
+
+    uECC_vli_bytesToNative(
+        _private,
+        private_key,
+        BITS_TO_BYTES(curve->num_n_bits));
+
+    /* Make sure the private key is in the range [1, n-1]. */
+    if (uECC_vli_isZero(_private, BITS_TO_WORDS(curve->num_n_bits))) {
+        return 0;
+    }
+
+    if (uECC_vli_cmp(curve->n, _private, BITS_TO_WORDS(curve->num_n_bits)) != 1) {
+        return 0;
+    }
+
+    /* Compute public key. */
+    if (!EccPoint_compute_public_key(_public, _private, curve)) {
+        return 0;
+    }
+
+    uECC_vli_nativeToBytes(public_key, curve->num_bytes, _public);
+    uECC_vli_nativeToBytes(
+        public_key +
+        curve->num_bytes, curve->num_bytes, _public + curve->num_words);
+    return 1;
+}

components/bt/esp_ble_mesh/mesh_common/tinycrypt/src/ecc_dh.c

@@ -0,0 +1,198 @@
+/* ec_dh.c - TinyCrypt implementation of EC-DH */
+
+/*
+ * Copyright (c) 2014, Kenneth MacKay
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <tinycrypt/constants.h>
+#include <tinycrypt/ecc.h>
+#include <tinycrypt/ecc_dh.h>
+#include <tinycrypt/utils.h>
+#include <string.h>
+
+#if default_RNG_defined
+static uECC_RNG_Function g_rng_function = &default_CSPRNG;
+#else
+static uECC_RNG_Function g_rng_function = 0;
+#endif
+
+int uECC_make_key_with_d(uint8_t *public_key, uint8_t *private_key,
+                         unsigned int *d, uECC_Curve curve)
+{
+
+    uECC_word_t _private[NUM_ECC_WORDS];
+    uECC_word_t _public[NUM_ECC_WORDS * 2];
+
+    /* This function is designed for test purposes-only (such as validating NIST
+     * test vectors) as it uses a provided value for d instead of generating
+     * it uniformly at random. */
+    memcpy (_private, d, NUM_ECC_BYTES);
+
+    /* Computing public-key from private: */
+    if (EccPoint_compute_public_key(_public, _private, curve)) {
+
+        /* Converting buffers to correct bit order: */
+        uECC_vli_nativeToBytes(private_key,
+                               BITS_TO_BYTES(curve->num_n_bits),
+                               _private);
+        uECC_vli_nativeToBytes(public_key,
+                               curve->num_bytes,
+                               _public);
+        uECC_vli_nativeToBytes(public_key + curve->num_bytes,
+                               curve->num_bytes,
+                               _public + curve->num_words);
+
+        /* erasing temporary buffer used to store secret: */
+        _set_secure(_private, 0, NUM_ECC_BYTES);
+
+        return 1;
+    }
+    return 0;
+}
+
+int uECC_make_key(uint8_t *public_key, uint8_t *private_key, uECC_Curve curve)
+{
+
+    uECC_word_t _random[NUM_ECC_WORDS * 2];
+    uECC_word_t _private[NUM_ECC_WORDS];
+    uECC_word_t _public[NUM_ECC_WORDS * 2];
+    uECC_word_t tries;
+
+    for (tries = 0; tries < uECC_RNG_MAX_TRIES; ++tries) {
+        /* Generating _private uniformly at random: */
+        uECC_RNG_Function rng_function = uECC_get_rng();
+        if (!rng_function ||
+                !rng_function((uint8_t *)_random, 2 * NUM_ECC_WORDS * uECC_WORD_SIZE)) {
+            return 0;
+        }
+
+        /* computing modular reduction of _random (see FIPS 186.4 B.4.1): */
+        uECC_vli_mmod(_private, _random, curve->n, BITS_TO_WORDS(curve->num_n_bits));
+
+        /* Computing public-key from private: */
+        if (EccPoint_compute_public_key(_public, _private, curve)) {
+
+            /* Converting buffers to correct bit order: */
+            uECC_vli_nativeToBytes(private_key,
+                                   BITS_TO_BYTES(curve->num_n_bits),
+                                   _private);
+            uECC_vli_nativeToBytes(public_key,
+                                   curve->num_bytes,
+                                   _public);
+            uECC_vli_nativeToBytes(public_key + curve->num_bytes,
+                                   curve->num_bytes,
+                                   _public + curve->num_words);
+
+            /* erasing temporary buffer that stored secret: */
+            _set_secure(_private, 0, NUM_ECC_BYTES);
+
+            return 1;
+        }
+    }
+    return 0;
+}
+
+int uECC_shared_secret(const uint8_t *public_key, const uint8_t *private_key,
+                       uint8_t *secret, uECC_Curve curve)
+{
+
+    uECC_word_t _public[NUM_ECC_WORDS * 2];
+    uECC_word_t _private[NUM_ECC_WORDS];
+
+    uECC_word_t tmp[NUM_ECC_WORDS];
+    uECC_word_t *p2[2] = {_private, tmp};
+    uECC_word_t *initial_Z = 0;
+    uECC_word_t carry;
+    wordcount_t num_words = curve->num_words;
+    wordcount_t num_bytes = curve->num_bytes;
+    int r;
+
+    /* Converting buffers to correct bit order: */
+    uECC_vli_bytesToNative(_private,
+                           private_key,
+                           BITS_TO_BYTES(curve->num_n_bits));
+    uECC_vli_bytesToNative(_public,
+                           public_key,
+                           num_bytes);
+    uECC_vli_bytesToNative(_public + num_words,
+                           public_key + num_bytes,
+                           num_bytes);
+
+    /* Regularize the bitcount for the private key so that attackers cannot use a
+     * side channel attack to learn the number of leading zeros. */
+    carry = regularize_k(_private, _private, tmp, curve);
+
+    /* If an RNG function was specified, try to get a random initial Z value to
+     * improve protection against side-channel attacks. */
+    if (g_rng_function) {
+        if (!uECC_generate_random_int(p2[carry], curve->p, num_words)) {
+            r = 0;
+            goto clear_and_out;
+        }
+        initial_Z = p2[carry];
+    }
+
+    EccPoint_mult(_public, _public, p2[!carry], initial_Z, curve->num_n_bits + 1,
+                  curve);
+
+    uECC_vli_nativeToBytes(secret, num_bytes, _public);
+    r = !EccPoint_isZero(_public, curve);
+
+clear_and_out:
+    /* erasing temporary buffer used to store secret: */
+    _set_secure(p2, 0, sizeof(p2));
+    _set_secure(tmp, 0, sizeof(tmp));
+    _set_secure(_private, 0, sizeof(_private));
+
+    return r;
+}

components/bt/esp_ble_mesh/mesh_common/tinycrypt/src/ecc_dsa.c

@@ -0,0 +1,293 @@
+/* ec_dsa.c - TinyCrypt implementation of EC-DSA */
+
+/* Copyright (c) 2014, Kenneth MacKay
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.*/
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <tinycrypt/constants.h>
+#include <tinycrypt/ecc.h>
+#include <tinycrypt/ecc_dsa.h>
+
+#if default_RNG_defined
+static uECC_RNG_Function g_rng_function = &default_CSPRNG;
+#else
+static uECC_RNG_Function g_rng_function = 0;
+#endif
+
+static void bits2int(uECC_word_t *native, const uint8_t *bits,
+                     unsigned bits_size, uECC_Curve curve)
+{
+    unsigned num_n_bytes = BITS_TO_BYTES(curve->num_n_bits);
+    unsigned num_n_words = BITS_TO_WORDS(curve->num_n_bits);
+    int shift;
+    uECC_word_t carry;
+    uECC_word_t *ptr;
+
+    if (bits_size > num_n_bytes) {
+        bits_size = num_n_bytes;
+    }
+
+    uECC_vli_clear(native, num_n_words);
+    uECC_vli_bytesToNative(native, bits, bits_size);
+    if (bits_size * 8 <= (unsigned)curve->num_n_bits) {
+        return;
+    }
+    shift = bits_size * 8 - curve->num_n_bits;
+    carry = 0;
+    ptr = native + num_n_words;
+    while (ptr-- > native) {
+        uECC_word_t temp = *ptr;
+        *ptr = (temp >> shift) | carry;
+        carry = temp << (uECC_WORD_BITS - shift);
+    }
+
+    /* Reduce mod curve_n */
+    if (uECC_vli_cmp_unsafe(curve->n, native, num_n_words) != 1) {
+        uECC_vli_sub(native, native, curve->n, num_n_words);
+    }
+}
+
+int uECC_sign_with_k(const uint8_t *private_key, const uint8_t *message_hash,
+                     unsigned hash_size, uECC_word_t *k, uint8_t *signature,
+                     uECC_Curve curve)
+{
+
+    uECC_word_t tmp[NUM_ECC_WORDS];
+    uECC_word_t s[NUM_ECC_WORDS];
+    uECC_word_t *k2[2] = {tmp, s};
+    uECC_word_t p[NUM_ECC_WORDS * 2];
+    uECC_word_t carry;
+    wordcount_t num_words = curve->num_words;
+    wordcount_t num_n_words = BITS_TO_WORDS(curve->num_n_bits);
+    bitcount_t num_n_bits = curve->num_n_bits;
+
+    /* Make sure 0 < k < curve_n */
+    if (uECC_vli_isZero(k, num_words) ||
+            uECC_vli_cmp(curve->n, k, num_n_words) != 1) {
+        return 0;
+    }
+
+    carry = regularize_k(k, tmp, s, curve);
+    EccPoint_mult(p, curve->G, k2[!carry], 0, num_n_bits + 1, curve);
+    if (uECC_vli_isZero(p, num_words)) {
+        return 0;
+    }
+
+    /* If an RNG function was specified, get a random number
+    to prevent side channel analysis of k. */
+    if (!g_rng_function) {
+        uECC_vli_clear(tmp, num_n_words);
+        tmp[0] = 1;
+    } else if (!uECC_generate_random_int(tmp, curve->n, num_n_words)) {
+        return 0;
+    }
+
+    /* Prevent side channel analysis of uECC_vli_modInv() to determine
+    bits of k / the private key by premultiplying by a random number */
+    uECC_vli_modMult(k, k, tmp, curve->n, num_n_words); /* k' = rand * k */
+    uECC_vli_modInv(k, k, curve->n, num_n_words);       /* k = 1 / k' */
+    uECC_vli_modMult(k, k, tmp, curve->n, num_n_words); /* k = 1 / k */
+
+    uECC_vli_nativeToBytes(signature, curve->num_bytes, p); /* store r */
+
+    /* tmp = d: */
+    uECC_vli_bytesToNative(tmp, private_key, BITS_TO_BYTES(curve->num_n_bits));
+
+    s[num_n_words - 1] = 0;
+    uECC_vli_set(s, p, num_words);
+    uECC_vli_modMult(s, tmp, s, curve->n, num_n_words); /* s = r*d */
+
+    bits2int(tmp, message_hash, hash_size, curve);
+    uECC_vli_modAdd(s, tmp, s, curve->n, num_n_words); /* s = e + r*d */
+    uECC_vli_modMult(s, s, k, curve->n, num_n_words);  /* s = (e + r*d) / k */
+    if (uECC_vli_numBits(s, num_n_words) > (bitcount_t)curve->num_bytes * 8) {
+        return 0;
+    }
+
+    uECC_vli_nativeToBytes(signature + curve->num_bytes, curve->num_bytes, s);
+    return 1;
+}
+
+int uECC_sign(const uint8_t *private_key, const uint8_t *message_hash,
+              unsigned hash_size, uint8_t *signature, uECC_Curve curve)
+{
+    uECC_word_t _random[2 * NUM_ECC_WORDS];
+    uECC_word_t k[NUM_ECC_WORDS];
+    uECC_word_t tries;
+
+    for (tries = 0; tries < uECC_RNG_MAX_TRIES; ++tries) {
+        /* Generating _random uniformly at random: */
+        uECC_RNG_Function rng_function = uECC_get_rng();
+        if (!rng_function ||
+                !rng_function((uint8_t *)_random, 2 * NUM_ECC_WORDS * uECC_WORD_SIZE)) {
+            return 0;
+        }
+
+        // computing k as modular reduction of _random (see FIPS 186.4 B.5.1):
+        uECC_vli_mmod(k, _random, curve->n, BITS_TO_WORDS(curve->num_n_bits));
+
+        if (uECC_sign_with_k(private_key, message_hash, hash_size, k, signature,
+                             curve)) {
+            return 1;
+        }
+    }
+    return 0;
+}
+
+static bitcount_t smax(bitcount_t a, bitcount_t b)
+{
+    return (a > b ? a : b);
+}
+
+int uECC_verify(const uint8_t *public_key, const uint8_t *message_hash,
+                unsigned hash_size, const uint8_t *signature,
+                uECC_Curve curve)
+{
+
+    uECC_word_t u1[NUM_ECC_WORDS], u2[NUM_ECC_WORDS];
+    uECC_word_t z[NUM_ECC_WORDS];
+    uECC_word_t sum[NUM_ECC_WORDS * 2];
+    uECC_word_t rx[NUM_ECC_WORDS];
+    uECC_word_t ry[NUM_ECC_WORDS];
+    uECC_word_t tx[NUM_ECC_WORDS];
+    uECC_word_t ty[NUM_ECC_WORDS];
+    uECC_word_t tz[NUM_ECC_WORDS];
+    const uECC_word_t *points[4];
+    const uECC_word_t *point;
+    bitcount_t num_bits;
+    bitcount_t i;
+
+    uECC_word_t _public[NUM_ECC_WORDS * 2];
+    uECC_word_t r[NUM_ECC_WORDS], s[NUM_ECC_WORDS];
+    wordcount_t num_words = curve->num_words;
+    wordcount_t num_n_words = BITS_TO_WORDS(curve->num_n_bits);
+
+    rx[num_n_words - 1] = 0;
+    r[num_n_words - 1] = 0;
+    s[num_n_words - 1] = 0;
+
+    uECC_vli_bytesToNative(_public, public_key, curve->num_bytes);
+    uECC_vli_bytesToNative(_public + num_words, public_key + curve->num_bytes,
+                           curve->num_bytes);
+    uECC_vli_bytesToNative(r, signature, curve->num_bytes);
+    uECC_vli_bytesToNative(s, signature + curve->num_bytes, curve->num_bytes);
+
+    /* r, s must not be 0. */
+    if (uECC_vli_isZero(r, num_words) || uECC_vli_isZero(s, num_words)) {
+        return 0;
+    }
+
+    /* r, s must be < n. */
+    if (uECC_vli_cmp_unsafe(curve->n, r, num_n_words) != 1 ||
+            uECC_vli_cmp_unsafe(curve->n, s, num_n_words) != 1) {
+        return 0;
+    }
+
+    /* Calculate u1 and u2. */
+    uECC_vli_modInv(z, s, curve->n, num_n_words); /* z = 1/s */
+    u1[num_n_words - 1] = 0;
+    bits2int(u1, message_hash, hash_size, curve);
+    uECC_vli_modMult(u1, u1, z, curve->n, num_n_words); /* u1 = e/s */
+    uECC_vli_modMult(u2, r, z, curve->n, num_n_words); /* u2 = r/s */
+
+    /* Calculate sum = G + Q. */
+    uECC_vli_set(sum, _public, num_words);
+    uECC_vli_set(sum + num_words, _public + num_words, num_words);
+    uECC_vli_set(tx, curve->G, num_words);
+    uECC_vli_set(ty, curve->G + num_words, num_words);
+    uECC_vli_modSub(z, sum, tx, curve->p, num_words); /* z = x2 - x1 */
+    XYcZ_add(tx, ty, sum, sum + num_words, curve);
+    uECC_vli_modInv(z, z, curve->p, num_words); /* z = 1/z */
+    apply_z(sum, sum + num_words, z, curve);
+
+    /* Use Shamir's trick to calculate u1*G + u2*Q */
+    points[0] = 0;
+    points[1] = curve->G;
+    points[2] = _public;
+    points[3] = sum;
+    num_bits = smax(uECC_vli_numBits(u1, num_n_words),
+                    uECC_vli_numBits(u2, num_n_words));
+
+    point = points[(!!uECC_vli_testBit(u1, num_bits - 1)) |
+                   ((!!uECC_vli_testBit(u2, num_bits - 1)) << 1)];
+    uECC_vli_set(rx, point, num_words);
+    uECC_vli_set(ry, point + num_words, num_words);
+    uECC_vli_clear(z, num_words);
+    z[0] = 1;
+
+    for (i = num_bits - 2; i >= 0; --i) {
+        uECC_word_t index;
+        curve->double_jacobian(rx, ry, z, curve);
+
+        index = (!!uECC_vli_testBit(u1, i)) | ((!!uECC_vli_testBit(u2, i)) << 1);
+        point = points[index];
+        if (point) {
+            uECC_vli_set(tx, point, num_words);
+            uECC_vli_set(ty, point + num_words, num_words);
+            apply_z(tx, ty, z, curve);
+            uECC_vli_modSub(tz, rx, tx, curve->p, num_words); /* Z = x2 - x1 */
+            XYcZ_add(tx, ty, rx, ry, curve);
+            uECC_vli_modMult_fast(z, z, tz, curve);
+        }
+    }
+
+    uECC_vli_modInv(z, z, curve->p, num_words); /* Z = 1/Z */
+    apply_z(rx, ry, z, curve);
+
+    /* v = x1 (mod n) */
+    if (uECC_vli_cmp_unsafe(curve->n, rx, num_n_words) != 1) {
+        uECC_vli_sub(rx, rx, curve->n, num_n_words);
+    }
+
+    /* Accept only if v == r. */
+    return (int)(uECC_vli_equal(rx, r, num_words) == 0);
+}

components/bt/esp_ble_mesh/mesh_common/tinycrypt/src/ecc_platform_specific.c

@@ -0,0 +1,106 @@
+/*  uECC_platform_specific.c - Implementation of platform specific functions*/
+
+/* Copyright (c) 2014, Kenneth MacKay
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.*/
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  uECC_platform_specific.c -- Implementation of platform specific functions
+ */
+
+
+#if defined(unix) || defined(__linux__) || defined(__unix__) || \
+    defined(__unix) |  (defined(__APPLE__) && defined(__MACH__)) || \
+    defined(uECC_POSIX)
+
+/* Some POSIX-like system with /dev/urandom or /dev/random. */
+#include <sys/types.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <stdint.h>
+
+#ifndef O_CLOEXEC
+#define O_CLOEXEC 0
+#endif
+
+int default_CSPRNG(uint8_t *dest, unsigned int size)
+{
+
+    /* input sanity check: */
+    if (dest == (uint8_t *) 0 || (size <= 0)) {
+        return 0;
+    }
+
+    int fd = open("/dev/urandom", O_RDONLY | O_CLOEXEC);
+    if (fd == -1) {
+        fd = open("/dev/random", O_RDONLY | O_CLOEXEC);
+        if (fd == -1) {
+            return 0;
+        }
+    }
+
+    char *ptr = (char *)dest;
+    size_t left = (size_t) size;
+    while (left > 0) {
+        ssize_t bytes_read = read(fd, ptr, left);
+        if (bytes_read <= 0) { // read failed
+            close(fd);
+            return 0;
+        }
+        left -= bytes_read;
+        ptr += bytes_read;
+    }
+
+    close(fd);
+    return 1;
+}
+
+#endif /* platform */

components/bt/esp_ble_mesh/mesh_common/tinycrypt/src/hmac.c

@@ -0,0 +1,147 @@
+/* hmac.c - TinyCrypt implementation of the HMAC algorithm */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <tinycrypt/hmac.h>
+#include <tinycrypt/constants.h>
+#include <tinycrypt/utils.h>
+
+static void rekey(uint8_t *key, const uint8_t *new_key, unsigned int key_size)
+{
+    const uint8_t inner_pad = (uint8_t) 0x36;
+    const uint8_t outer_pad = (uint8_t) 0x5c;
+    unsigned int i;
+
+    for (i = 0; i < key_size; ++i) {
+        key[i] = inner_pad ^ new_key[i];
+        key[i + TC_SHA256_BLOCK_SIZE] = outer_pad ^ new_key[i];
+    }
+    for (; i < TC_SHA256_BLOCK_SIZE; ++i) {
+        key[i] = inner_pad; key[i + TC_SHA256_BLOCK_SIZE] = outer_pad;
+    }
+}
+
+int tc_hmac_set_key(TCHmacState_t ctx, const uint8_t *key,
+                    unsigned int key_size)
+{
+    /* Input sanity check */
+    if (ctx == (TCHmacState_t) 0 ||
+            key == (const uint8_t *) 0 ||
+            key_size == 0) {
+        return TC_CRYPTO_FAIL;
+    }
+
+    const uint8_t dummy_key[TC_SHA256_BLOCK_SIZE];
+    struct tc_hmac_state_struct dummy_state;
+
+    if (key_size <= TC_SHA256_BLOCK_SIZE) {
+        /*
+         * The next three calls are dummy calls just to avoid
+         * certain timing attacks. Without these dummy calls,
+         * adversaries would be able to learn whether the key_size is
+         * greater than TC_SHA256_BLOCK_SIZE by measuring the time
+         * consumed in this process.
+         */
+        (void)tc_sha256_init(&dummy_state.hash_state);
+        (void)tc_sha256_update(&dummy_state.hash_state,
+                               dummy_key,
+                               key_size);
+        (void)tc_sha256_final(&dummy_state.key[TC_SHA256_DIGEST_SIZE],
+                              &dummy_state.hash_state);
+
+        /* Actual code for when key_size <= TC_SHA256_BLOCK_SIZE: */
+        rekey(ctx->key, key, key_size);
+    } else {
+        (void)tc_sha256_init(&ctx->hash_state);
+        (void)tc_sha256_update(&ctx->hash_state, key, key_size);
+        (void)tc_sha256_final(&ctx->key[TC_SHA256_DIGEST_SIZE],
+                              &ctx->hash_state);
+        rekey(ctx->key,
+              &ctx->key[TC_SHA256_DIGEST_SIZE],
+              TC_SHA256_DIGEST_SIZE);
+    }
+
+    return TC_CRYPTO_SUCCESS;
+}
+
+int tc_hmac_init(TCHmacState_t ctx)
+{
+
+    /* input sanity check: */
+    if (ctx == (TCHmacState_t) 0) {
+        return TC_CRYPTO_FAIL;
+    }
+
+    (void) tc_sha256_init(&ctx->hash_state);
+    (void) tc_sha256_update(&ctx->hash_state, ctx->key, TC_SHA256_BLOCK_SIZE);
+
+    return TC_CRYPTO_SUCCESS;
+}
+
+int tc_hmac_update(TCHmacState_t ctx,
+                   const void *data,
+                   unsigned int data_length)
+{
+
+    /* input sanity check: */
+    if (ctx == (TCHmacState_t) 0) {
+        return TC_CRYPTO_FAIL;
+    }
+
+    (void)tc_sha256_update(&ctx->hash_state, data, data_length);
+
+    return TC_CRYPTO_SUCCESS;
+}
+
+int tc_hmac_final(uint8_t *tag, unsigned int taglen, TCHmacState_t ctx)
+{
+
+    /* input sanity check: */
+    if (tag == (uint8_t *) 0 ||
+            taglen != TC_SHA256_DIGEST_SIZE ||
+            ctx == (TCHmacState_t) 0) {
+        return TC_CRYPTO_FAIL;
+    }
+
+    (void) tc_sha256_final(tag, &ctx->hash_state);
+
+    (void)tc_sha256_init(&ctx->hash_state);
+    (void)tc_sha256_update(&ctx->hash_state,
+                           &ctx->key[TC_SHA256_BLOCK_SIZE],
+                           TC_SHA256_BLOCK_SIZE);
+    (void)tc_sha256_update(&ctx->hash_state, tag, TC_SHA256_DIGEST_SIZE);
+    (void)tc_sha256_final(tag, &ctx->hash_state);
+
+    /* destroy the current state */
+    _set(ctx, 0, sizeof(*ctx));
+
+    return TC_CRYPTO_SUCCESS;
+}

components/bt/esp_ble_mesh/mesh_common/tinycrypt/src/hmac_prng.c

@@ -0,0 +1,234 @@
+/* hmac_prng.c - TinyCrypt implementation of HMAC-PRNG */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <tinycrypt/hmac_prng.h>
+#include <tinycrypt/hmac.h>
+#include <tinycrypt/constants.h>
+#include <tinycrypt/utils.h>
+
+/*
+ * min bytes in the seed string.
+ * MIN_SLEN*8 must be at least the expected security level.
+ */
+static const unsigned int MIN_SLEN = 32;
+
+/*
+ * max bytes in the seed string;
+ * SP800-90A specifies a maximum of 2^35 bits (i.e., 2^32 bytes).
+ */
+static const unsigned int MAX_SLEN = UINT32_MAX;
+
+/*
+ * max bytes in the personalization string;
+ * SP800-90A specifies a maximum of 2^35 bits (i.e., 2^32 bytes).
+ */
+static const unsigned int MAX_PLEN = UINT32_MAX;
+
+/*
+ * max bytes in the additional_info string;
+ * SP800-90A specifies a maximum of 2^35 bits (i.e., 2^32 bytes).
+ */
+static const unsigned int MAX_ALEN = UINT32_MAX;
+
+/*
+ * max number of generates between re-seeds;
+ * TinyCrypt accepts up to (2^32 - 1) which is the maximal value of
+ * a 32-bit unsigned int variable, while SP800-90A specifies a maximum of 2^48.
+ */
+static const unsigned int MAX_GENS = UINT32_MAX;
+
+/*
+ * maximum bytes per generate call;
+ * SP800-90A specifies a maximum up to 2^19.
+ */
+static const unsigned int  MAX_OUT = (1 << 19);
+
+/*
+ * Assumes: prng != NULL
+ */
+static void update(TCHmacPrng_t prng, const uint8_t *data, unsigned int datalen, const uint8_t *additional_data, unsigned int additional_datalen)
+{
+    const uint8_t separator0 = 0x00;
+    const uint8_t separator1 = 0x01;
+
+    /* configure the new prng key into the prng's instance of hmac */
+    tc_hmac_set_key(&prng->h, prng->key, sizeof(prng->key));
+
+    /* use current state, e and separator 0 to compute a new prng key: */
+    (void)tc_hmac_init(&prng->h);
+    (void)tc_hmac_update(&prng->h, prng->v, sizeof(prng->v));
+    (void)tc_hmac_update(&prng->h, &separator0, sizeof(separator0));
+
+    if (data && datalen) {
+        (void)tc_hmac_update(&prng->h, data, datalen);
+    }
+    if (additional_data && additional_datalen) {
+        (void)tc_hmac_update(&prng->h, additional_data, additional_datalen);
+    }
+
+    (void)tc_hmac_final(prng->key, sizeof(prng->key), &prng->h);
+
+    /* configure the new prng key into the prng's instance of hmac */
+    (void)tc_hmac_set_key(&prng->h, prng->key, sizeof(prng->key));
+
+    /* use the new key to compute a new state variable v */
+    (void)tc_hmac_init(&prng->h);
+    (void)tc_hmac_update(&prng->h, prng->v, sizeof(prng->v));
+    (void)tc_hmac_final(prng->v, sizeof(prng->v), &prng->h);
+
+    if (data == 0 || datalen == 0) {
+        return;
+    }
+
+    /* configure the new prng key into the prng's instance of hmac */
+    tc_hmac_set_key(&prng->h, prng->key, sizeof(prng->key));
+
+    /* use current state, e and separator 1 to compute a new prng key: */
+    (void)tc_hmac_init(&prng->h);
+    (void)tc_hmac_update(&prng->h, prng->v, sizeof(prng->v));
+    (void)tc_hmac_update(&prng->h, &separator1, sizeof(separator1));
+    (void)tc_hmac_update(&prng->h, data, datalen);
+    if (additional_data && additional_datalen) {
+        (void)tc_hmac_update(&prng->h, additional_data, additional_datalen);
+    }
+    (void)tc_hmac_final(prng->key, sizeof(prng->key), &prng->h);
+
+    /* configure the new prng key into the prng's instance of hmac */
+    (void)tc_hmac_set_key(&prng->h, prng->key, sizeof(prng->key));
+
+    /* use the new key to compute a new state variable v */
+    (void)tc_hmac_init(&prng->h);
+    (void)tc_hmac_update(&prng->h, prng->v, sizeof(prng->v));
+    (void)tc_hmac_final(prng->v, sizeof(prng->v), &prng->h);
+}
+
+int tc_hmac_prng_init(TCHmacPrng_t prng,
+                      const uint8_t *personalization,
+                      unsigned int plen)
+{
+
+    /* input sanity check: */
+    if (prng == (TCHmacPrng_t) 0 ||
+            personalization == (uint8_t *) 0 ||
+            plen > MAX_PLEN) {
+        return TC_CRYPTO_FAIL;
+    }
+
+    /* put the generator into a known state: */
+    _set(prng->key, 0x00, sizeof(prng->key));
+    _set(prng->v, 0x01, sizeof(prng->v));
+
+    update(prng, personalization, plen, 0, 0);
+
+    /* force a reseed before allowing tc_hmac_prng_generate to succeed: */
+    prng->countdown = 0;
+
+    return TC_CRYPTO_SUCCESS;
+}
+
+int tc_hmac_prng_reseed(TCHmacPrng_t prng,
+                        const uint8_t *seed,
+                        unsigned int seedlen,
+                        const uint8_t *additional_input,
+                        unsigned int additionallen)
+{
+
+    /* input sanity check: */
+    if (prng == (TCHmacPrng_t) 0 ||
+            seed == (const uint8_t *) 0 ||
+            seedlen < MIN_SLEN ||
+            seedlen > MAX_SLEN) {
+        return TC_CRYPTO_FAIL;
+    }
+
+    if (additional_input != (const uint8_t *) 0) {
+        /*
+         * Abort if additional_input is provided but has inappropriate
+         * length
+         */
+        if (additionallen == 0 ||
+                additionallen > MAX_ALEN) {
+            return TC_CRYPTO_FAIL;
+        } else {
+            /* call update for the seed and additional_input */
+            update(prng, seed, seedlen, additional_input, additionallen);
+        }
+    } else {
+        /* call update only for the seed */
+        update(prng, seed, seedlen, 0, 0);
+    }
+
+    /* ... and enable hmac_prng_generate */
+    prng->countdown = MAX_GENS;
+
+    return TC_CRYPTO_SUCCESS;
+}
+
+int tc_hmac_prng_generate(uint8_t *out, unsigned int outlen, TCHmacPrng_t prng)
+{
+    unsigned int bufferlen;
+
+    /* input sanity check: */
+    if (out == (uint8_t *) 0 ||
+            prng == (TCHmacPrng_t) 0 ||
+            outlen == 0 ||
+            outlen > MAX_OUT) {
+        return TC_CRYPTO_FAIL;
+    } else if (prng->countdown == 0) {
+        return TC_HMAC_PRNG_RESEED_REQ;
+    }
+
+    prng->countdown--;
+
+    while (outlen != 0) {
+        /* configure the new prng key into the prng's instance of hmac */
+        tc_hmac_set_key(&prng->h, prng->key, sizeof(prng->key));
+
+        /* operate HMAC in OFB mode to create "random" outputs */
+        (void)tc_hmac_init(&prng->h);
+        (void)tc_hmac_update(&prng->h, prng->v, sizeof(prng->v));
+        (void)tc_hmac_final(prng->v, sizeof(prng->v), &prng->h);
+
+        bufferlen = (TC_SHA256_DIGEST_SIZE > outlen) ?
+                    outlen : TC_SHA256_DIGEST_SIZE;
+        (void)_copy(out, bufferlen, prng->v, bufferlen);
+
+        out += bufferlen;
+        outlen = (outlen > TC_SHA256_DIGEST_SIZE) ?
+                 (outlen - TC_SHA256_DIGEST_SIZE) : 0;
+    }
+
+    /* block future PRNG compromises from revealing past state */
+    update(prng, 0, 0, 0, 0);
+
+    return TC_CRYPTO_SUCCESS;
+}

components/bt/esp_ble_mesh/mesh_common/tinycrypt/src/sha256.c

@@ -0,0 +1,217 @@
+/* sha256.c - TinyCrypt SHA-256 crypto hash algorithm implementation */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <tinycrypt/sha256.h>
+#include <tinycrypt/constants.h>
+#include <tinycrypt/utils.h>
+
+static void compress(unsigned int *iv, const uint8_t *data);
+
+int tc_sha256_init(TCSha256State_t s)
+{
+    /* input sanity check: */
+    if (s == (TCSha256State_t) 0) {
+        return TC_CRYPTO_FAIL;
+    }
+
+    /*
+     * Setting the initial state values.
+     * These values correspond to the first 32 bits of the fractional parts
+     * of the square roots of the first 8 primes: 2, 3, 5, 7, 11, 13, 17
+     * and 19.
+     */
+    _set((uint8_t *) s, 0x00, sizeof(*s));
+    s->iv[0] = 0x6a09e667;
+    s->iv[1] = 0xbb67ae85;
+    s->iv[2] = 0x3c6ef372;
+    s->iv[3] = 0xa54ff53a;
+    s->iv[4] = 0x510e527f;
+    s->iv[5] = 0x9b05688c;
+    s->iv[6] = 0x1f83d9ab;
+    s->iv[7] = 0x5be0cd19;
+
+    return TC_CRYPTO_SUCCESS;
+}
+
+int tc_sha256_update(TCSha256State_t s, const uint8_t *data, size_t datalen)
+{
+    /* input sanity check: */
+    if (s == (TCSha256State_t) 0 ||
+            data == (void *) 0) {
+        return TC_CRYPTO_FAIL;
+    } else if (datalen == 0) {
+        return TC_CRYPTO_SUCCESS;
+    }
+
+    while (datalen-- > 0) {
+        s->leftover[s->leftover_offset++] = *(data++);
+        if (s->leftover_offset >= TC_SHA256_BLOCK_SIZE) {
+            compress(s->iv, s->leftover);
+            s->leftover_offset = 0;
+            s->bits_hashed += (TC_SHA256_BLOCK_SIZE << 3);
+        }
+    }
+
+    return TC_CRYPTO_SUCCESS;
+}
+
+int tc_sha256_final(uint8_t *digest, TCSha256State_t s)
+{
+    unsigned int i;
+
+    /* input sanity check: */
+    if (digest == (uint8_t *) 0 ||
+            s == (TCSha256State_t) 0) {
+        return TC_CRYPTO_FAIL;
+    }
+
+    s->bits_hashed += (s->leftover_offset << 3);
+
+    s->leftover[s->leftover_offset++] = 0x80; /* always room for one byte */
+    if (s->leftover_offset > (sizeof(s->leftover) - 8)) {
+        /* there is not room for all the padding in this block */
+        _set(s->leftover + s->leftover_offset, 0x00,
+             sizeof(s->leftover) - s->leftover_offset);
+        compress(s->iv, s->leftover);
+        s->leftover_offset = 0;
+    }
+
+    /* add the padding and the length in big-Endian format */
+    _set(s->leftover + s->leftover_offset, 0x00,
+         sizeof(s->leftover) - 8 - s->leftover_offset);
+    s->leftover[sizeof(s->leftover) - 1] = (uint8_t)(s->bits_hashed);
+    s->leftover[sizeof(s->leftover) - 2] = (uint8_t)(s->bits_hashed >> 8);
+    s->leftover[sizeof(s->leftover) - 3] = (uint8_t)(s->bits_hashed >> 16);
+    s->leftover[sizeof(s->leftover) - 4] = (uint8_t)(s->bits_hashed >> 24);
+    s->leftover[sizeof(s->leftover) - 5] = (uint8_t)(s->bits_hashed >> 32);
+    s->leftover[sizeof(s->leftover) - 6] = (uint8_t)(s->bits_hashed >> 40);
+    s->leftover[sizeof(s->leftover) - 7] = (uint8_t)(s->bits_hashed >> 48);
+    s->leftover[sizeof(s->leftover) - 8] = (uint8_t)(s->bits_hashed >> 56);
+
+    /* hash the padding and length */
+    compress(s->iv, s->leftover);
+
+    /* copy the iv out to digest */
+    for (i = 0; i < TC_SHA256_STATE_BLOCKS; ++i) {
+        unsigned int t = *((unsigned int *) &s->iv[i]);
+        *digest++ = (uint8_t)(t >> 24);
+        *digest++ = (uint8_t)(t >> 16);
+        *digest++ = (uint8_t)(t >> 8);
+        *digest++ = (uint8_t)(t);
+    }
+
+    /* destroy the current state */
+    _set(s, 0, sizeof(*s));
+
+    return TC_CRYPTO_SUCCESS;
+}
+
+/*
+ * Initializing SHA-256 Hash constant words K.
+ * These values correspond to the first 32 bits of the fractional parts of the
+ * cube roots of the first 64 primes between 2 and 311.
+ */
+static const unsigned int k256[64] = {
+    0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,
+    0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
+    0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,
+    0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
+    0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
+    0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
+    0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b,
+    0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
+    0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a,
+    0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
+    0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
+};
+
+static inline unsigned int ROTR(unsigned int a, unsigned int n)
+{
+    return (((a) >> n) | ((a) << (32 - n)));
+}
+
+#define Sigma0(a)(ROTR((a), 2) ^ ROTR((a), 13) ^ ROTR((a), 22))
+#define Sigma1(a)(ROTR((a), 6) ^ ROTR((a), 11) ^ ROTR((a), 25))
+#define sigma0(a)(ROTR((a), 7) ^ ROTR((a), 18) ^ ((a) >> 3))
+#define sigma1(a)(ROTR((a), 17) ^ ROTR((a), 19) ^ ((a) >> 10))
+
+#define Ch(a, b, c)(((a) & (b)) ^ ((~(a)) & (c)))
+#define Maj(a, b, c)(((a) & (b)) ^ ((a) & (c)) ^ ((b) & (c)))
+
+static inline unsigned int BigEndian(const uint8_t **c)
+{
+    unsigned int n = 0;
+
+    n = (((unsigned int)(*((*c)++))) << 24);
+    n |= ((unsigned int)(*((*c)++)) << 16);
+    n |= ((unsigned int)(*((*c)++)) << 8);
+    n |= ((unsigned int)(*((*c)++)));
+    return n;
+}
+
+static void compress(unsigned int *iv, const uint8_t *data)
+{
+    unsigned int a, b, c, d, e, f, g, h;
+    unsigned int s0, s1;
+    unsigned int t1, t2;
+    unsigned int work_space[16];
+    unsigned int n;
+    unsigned int i;
+
+    a = iv[0]; b = iv[1]; c = iv[2]; d = iv[3];
+    e = iv[4]; f = iv[5]; g = iv[6]; h = iv[7];
+
+    for (i = 0; i < 16; ++i) {
+        n = BigEndian(&data);
+        t1 = work_space[i] = n;
+        t1 += h + Sigma1(e) + Ch(e, f, g) + k256[i];
+        t2 = Sigma0(a) + Maj(a, b, c);
+        h = g; g = f; f = e; e = d + t1;
+        d = c; c = b; b = a; a = t1 + t2;
+    }
+
+    for ( ; i < 64; ++i) {
+        s0 = work_space[(i + 1) & 0x0f];
+        s0 = sigma0(s0);
+        s1 = work_space[(i + 14) & 0x0f];
+        s1 = sigma1(s1);
+
+        t1 = work_space[i & 0xf] += s0 + s1 + work_space[(i + 9) & 0xf];
+        t1 += h + Sigma1(e) + Ch(e, f, g) + k256[i];
+        t2 = Sigma0(a) + Maj(a, b, c);
+        h = g; g = f; f = e; e = d + t1;
+        d = c; c = b; b = a; a = t1 + t2;
+    }
+
+    iv[0] += a; iv[1] += b; iv[2] += c; iv[3] += d;
+    iv[4] += e; iv[5] += f; iv[6] += g; iv[7] += h;
+}

components/bt/esp_ble_mesh/mesh_common/tinycrypt/src/utils.c

@@ -0,0 +1,74 @@
+/* utils.c - TinyCrypt platform-dependent run-time operations */
+
+/*
+ *  Copyright (C) 2017 by Intel Corporation, All Rights Reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *    - Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *
+ *    - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ *    - Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <tinycrypt/utils.h>
+#include <tinycrypt/constants.h>
+
+#include <string.h>
+
+#define MASK_TWENTY_SEVEN 0x1b
+
+unsigned int _copy(uint8_t *to, unsigned int to_len,
+                   const uint8_t *from, unsigned int from_len)
+{
+    if (from_len <= to_len) {
+        (void)memcpy(to, from, from_len);
+        return from_len;
+    } else {
+        return TC_CRYPTO_FAIL;
+    }
+}
+
+void _set(void *to, uint8_t val, unsigned int len)
+{
+    (void)memset(to, val, len);
+}
+
+/*
+ * Doubles the value of a byte for values up to 127.
+ */
+uint8_t _double_byte(uint8_t a)
+{
+    return ((a << 1) ^ ((a >> 7) * MASK_TWENTY_SEVEN));
+}
+
+int _compare(const uint8_t *a, const uint8_t *b, size_t size)
+{
+    const uint8_t *tempa = a;
+    const uint8_t *tempb = b;
+    uint8_t result = 0;
+
+    for (unsigned int i = 0; i < size; i++) {
+        result |= tempa[i] ^ tempb[i];
+    }
+    return result;
+}

components/bt/esp_ble_mesh/mesh_core/bluedroid_host/mesh_bearer_adapt.c

@@ -21,8 +21,10 @@
 #include "mbedtls/aes.h"
 #include "bt_common.h"
 
+#include <tinycrypt/aes.h>
+#include <tinycrypt/constants.h>
+
 #include "mesh_hci.h"
-#include "mesh_aes_encrypt.h"
 #include "mesh_bearer_adapt.h"
 #include "mesh_common.h"
 #include "provisioner_prov.h"

components/bt/esp_ble_mesh/mesh_core/crypto.c

@@ -13,9 +13,12 @@
 
 #define BT_DBG_ENABLED IS_ENABLED(CONFIG_BLE_MESH_DEBUG_CRYPTO)
 
-#include "mesh_common.h"
+#include <tinycrypt/aes.h>
+#include <tinycrypt/constants.h>
+#include <tinycrypt/cmac_mode.h>
+
 #include "crypto.h"
-#include "mesh_aes_encrypt.h"
+#include "mesh_common.h"
 #include "mesh_bearer_adapt.h"
 
 #define NET_MIC_LEN(pdu) (((pdu)[1] & 0x80) ? 8 : 4)

components/bt/esp_ble_mesh/mesh_core/nimble_host/mesh_bearer_adapt.c

@@ -21,9 +21,11 @@
 #include "services/gap/ble_svc_gap.h"
 #include "services/gatt/ble_svc_gatt.h"
 
+#include <tinycrypt/aes.h>
+#include <tinycrypt/constants.h>
+
 #include "mesh_hci.h"
 #include "mesh_common.h"
-#include "mesh_aes_encrypt.h"
 #include "provisioner_prov.h"
 
 /** @def BT_UUID_MESH_PROV