带有salt的MD5哈希，用于在C＃中保存密码

Could you please advise me some easy algorithm for hashing user password by MD5, but with salt for increasing reliability.

你可以告诉我一些简单的算法，用于通过MD5散列用户密码，但是使用salt来提高可靠性。

Now I have this one:

现在我有这个：

private static string GenerateHash(string value)
{
    var data = System.Text.Encoding.ASCII.GetBytes(value);
    data = System.Security.Cryptography.MD5.Create().ComputeHash(data);
    return Convert.ToBase64String(data);
}

4 个解决方案

#1

You can use the HMACMD5 class:

您可以使用HMACMD5类：

var hmacMD5 = new HMACMD5(salt);
var saltedHash = hmacMD5.ComputeHash(password);

Works with SHA-1, SHA256, SHA384, SHA512 and RIPEMD160 as well:

兼容SHA-1，SHA256，SHA384，SHA512和RIPEMD160：

var hmacSHA1 = new HMACSHA1(salt);
var saltedHash = hmacSHA1.ComputeHash(password);

Both salt and password are expected as byte arrays.

salt和password都是字节数组。

If you have strings you'll have to convert them to bytes first:

如果你有字符串，你必须先将它们转换为字节：

var salt = System.Text.Encoding.UTF8.GetBytes("my salt");
var password = System.Text.Encoding.UTF8.GetBytes("my password");

#2

Here's a sample. It handles MD5, SHA1, SHA256, SHA384, and SHA512.

这是一个样本。它处理MD5，SHA1，SHA256，SHA384和SHA512。

#3

In addition to the HMACSHA1 class mentioned above, if you just need a quick salted hash, then you're already 95% of the way there:

除了上面提到的HMACSHA1类之外，如果你只需要一个快速盐腌哈希，那么你已经95％了：

private static string GenerateHash(string value, string salt)
{
    byte[] data = System.Text.Encoding.ASCII.GetBytes(salt + value);
    data = System.Security.Cryptography.MD5.Create().ComputeHash(data);
    return Convert.ToBase64String(data);
}

The real trick is storing the salt in a secure location, such as your machine.config.

真正的诀窍是将盐存储在安全的位置，例如machine.config。

#4

Microsoft have done this work for you, but it takes a bit of digging. Install Web Service Extensions 3.0, and have a look at the Microsoft.Web.Services3.Security.Tokens.UsernameToken.ComputePasswordDigest function with Reflector.

微软已经为你完成了这项工作，但它需要一些挖掘。安装Web Service Extensions 3.0，并查看带有Reflector的Microsoft.Web.Services3.Security.Tokens.UsernameToken.ComputePasswordDigest函数。

I would like to post the source code to that function here, but I'm not sure if it's legal to do that. If anyone can reassure me then I will do so.

我想在这里将源代码发布到该函数，但我不确定这样做是否合法。如果有人能安慰我，那么我会这样做。

#1