如何解密 SHA-256 加密字符串? [英] How to decrypt a SHA-256 encrypted string?

问题描述

我有一个经过加盐处理的字符串，用 SHA-256 散列，然后用 base64 编码.有没有办法将这个字符串解码回它的原始值?

I have a string that was salted, hashed with SHA-256, then base64 encoded. Is there a way to decode this string back to its original value?

推荐答案

SHA-256 是一个 加密(单向)哈希函数，所以没有直接的方法来解码它.加密散列函数的全部目的是您无法撤消它.

SHA-256 is a cryptographic (one-way) hash function, so there is no direct way to decode it. The entire purpose of a cryptographic hash function is that you can't undo it.

您可以做的一件事是蛮力策略，您可以在其中猜测散列的内容，然后用相同的函数散列它，看看它是否匹配.除非散列数据很容易猜测，否则可能需要很长时间.

One thing you can do is a brute-force strategy, where you guess what was hashed, then hash it with the same function and see if it matches. Unless the hashed data is very easy to guess, it could take a long time though.

您可能会发现问题散列密码和加密之间的区别它"很有趣.

You may find the question "Difference between hashing a password and encrypting it" interesting.

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