从 SHA256 解密 [英] Decrypt from SHA256

问题描述

我有将字符串加密为 sha256 和 base64 旁边的代码:

I have that code to encrypt string to sha256 and next to base64:

 public static string Sha256encrypt(string phrase)
    {
        UTF8Encoding encoder = new UTF8Encoding();
        SHA256Managed sha256hasher = new SHA256Managed();
        byte[] hashedDataBytes = sha256hasher.ComputeHash(encoder.GetBytes(phrase));
        return Convert.ToBase64String(hashedDataBytes);
    }

如何在另一端解密我的密码?

How can I decrypt my password in other side?

推荐答案

您无法解密 One 的结果方式哈希.您应该做的是比较输入密码的哈希值与数据库中存储的哈希值.

You cannot decrypt the result of a One Way Hash. What you should do instead is compare a hash of the entered password versus the stored hash in the database.

示例:

var password = "1234";
var hashedPassword = Sha256encrypt(password);

var allowLogin = hashedPassword == storedPassword; //storedPassword from Database, etc.

这只是最基本的，当使用散列算法时，你应该考虑使用 Salt 也是.

This is only the very basics though, when using hashing algorithms you should consider using a Salt too.

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