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PHP SHA256怎么带密钥加解密？

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Release： 2016-06-06 20:12:49
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哪位大神有PHP SHA256带密钥加密、解密的代码，麻烦给一份，谢谢。

如果使用hash_hmac的话，因为不可逆，就只能实现加密而不能解密了。

回复内容：

哪位大神有PHP SHA256带密钥加密、解密的代码，麻烦给一份，谢谢。

如果使用hash_hmac的话，因为不可逆，就只能实现加密而不能解密了。

SHA256是一种散列算法，怎么可能解密？只能碰撞吧

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