[英]MD5 hash with salt for keeping password in DB in C#
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);
}
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: 适用于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");
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渍哈希,那么你已经95%的方式:
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。
Microsoft have done this work for you, but it takes a bit of digging. 微软已经为你完成了这项工作,但它需要一些挖掘。 Install Web Service Extensions 3.0, and have a look at the Microsoft.Web.Services3.Security.Tokens.UsernameToken.ComputePasswordDigest
function with Reflector. 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. 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。 If anyone can reassure me then I will do so. 如果有人能安慰我,那么我会这样做。
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