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sha512如何创建比它提供的字符串更大的哈希?

cryptographic-hash-function sha512 sha hash security

-2

Anonymous · 技术社区 · 6 年前

sha512
下面是一个例子(在python中):

Python 3.6.0 (default, Jan 13 2017, 00:00:00) 
[GCC 4.8.4] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import hashlib
>>> string='-'*10000
>>> hash=hashlib.sha512(string.encode('utf-8'))
>>> hash.hexdigest()
'0d1e23b51e718f4e67c371a16e0f91fefce2802c0b674374e0e0e3309f0e10936a3b96aa0e29d44ad0ba23d0a019f3ff57bfd260b2ed4b6a06c2d343a6dc1800'
>>> len(string)
10000
>>> len(hash.hexdigest())
128