03-uhashlib.md 1.5 KB
uhashlib – 哈希算法
!!! abstract "简介"
`uhashlib` 模块实现了二进制数据哈希算法。
算法功能
SHA256
The current generation, modern hashing algorithm (of SHA2 series). It is suitable for cryptographically-secure purposes. Included in the MicroPython core and any board is recommended to provide this, unless it has particular code size constraints.
SHA1
A previous generation algorithm. Not recommended for new usages, but SHA1 is a part of number of Internet standards and existing applications, so boards targetting network connectivity and interoperatiability will try to provide this.
MD5
A legacy algorithm, not considered cryptographically secure. Only selected boards, targetting interoperatibility with legacy applications, will offer this.
函数
class uhashlib.sha256([data])
创建一个SHA256哈希对象并提供 data 赋值。
class uhashlib.sha1([data])
创建一个SHA1哈希对象并提供 data 赋值。
class uhashlib.md5([data])
创建一个MD5哈希对象并提供 data 赋值。
hash.update(data)
将更多二进制数据放入哈希表中。
hash.digest()
返回字节对象哈希的所有数据。调用此方法后，将无法将更多数据送入哈希。
hash.hexdigest()
此方法没有实现， 使用 ubinascii.hexlify(hash.digest()) 达到类似效果。
更多内容可参考 uhashlib 。