密码加密后解密密码 [英] Decrypting password after a password hash encrypt

问题描述

这是我的密码加密代码：

This is my password encrypting code :

// Create a 256 bit (64 characters) long random salt
// Let's add 'something random' and the username
// to the salt as well for added security
$salt = hash('sha256', uniqid(mt_rand(), true) . 'something random' . strtolower($username));

// Prefix the password with the salt
$hash = $salt . $password;

// Hash the salted password a bunch of times
for ( $i = 0; $i < 100000; $i ++ )
{
    $hash = hash('sha256', $hash);
}

// Prefix the hash with the salt so we can find it back later
$hash = $salt . $hash;

我失去了教程网站。有人知道如何解密这个加密。非常感谢你。欣赏你的帮助

I lost the tutorial site. Do anyone know how to decrypt this encryption. Thank you very much. Appreciate your help

推荐答案

没有* de * cryption算法，因为没有* en * cryption算法。你正在做的是一个哈希，这是一个不可逆的操作。这就是要点，你不想存储任何甚至可以让你知道实际的密码是什么的东西。

There is no *de*cryption algorithm because there's no *en*cryption algorithm. What you're doing is a hash, which is a non-reversible operation. And that's exactly the point, you do not want to store anything that would even allow you the chance of knowing what the actual secret password is.

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