从加密功能解密方法 [英] Decrypt method from encryption function

问题描述

我有用于加密的口令，并将其存储到数据库如下的方法：

I have a method that is used to encrypt the password and store it to database as below :

public static string Md5Encrypted(string password)
        {
            byte[] pass = Encoding.UTF8.GetBytes(password);
            MD5 md5 = new MD5CryptoServiceProvider();
            string strPassword = Encoding.UTF8.GetString(md5.ComputeHash(pass));
            return strPassword;
        } 

现在我想要方法解密，我从中通过上述方法，同时将其存储加密的数据库获取密码。我不知道如何做到这一点。任何人都可以帮助我吗？

Now I want the method that decrypt the password that I get from database which was encrypted by above method while storing it. I don't know how to make it. Anybody can help me please?

推荐答案

MD5是散列函数（非加密）和是不可逆转的。也就是说，你不能从一个给定的哈希计算的原始值。

MD5 is a hash function (not an encryption) and is irreversible. That is, you can't compute the original value from a given hash.

更新：我推荐这篇文章描述了如何存储密码哈希安全。有一个C＃实现也是如此。

Update: I recommend this article that describes how to store password hashes securely. There's a C# implementation as well.

http://crackstation.net/hashing-security.htm

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