uhashlib -- 哈希算法

该模块实现了二进制数据哈希算法。精确可用的算法依赖于TPYBoard。其中的算法可能实施:

• 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.

构造器

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。

方法

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。