How do I generate an encryption hash in ASP.NET MVC?

Question

I am looking into creating a custom members login system (for learning) and I haven\'t been able to figure out the C# command to generate an encrypted hash.

Is ther

Answer 1

Well, first of all an encryption hash is a contradiction. Like a vegetarian steak. You can use encryption, or you can hash them (and you should hash them), but hashing is not encryption.

Look up a class starting with Md5 ;) Or Sha1 - those are hash algoryithms. It is all there in .NET (System.Security.Cryptography namespace).

Answer 2

I prefer having my hash all in one concatenated string. I borrowed this to build my hash:

public static string MD5Hash(string itemToHash)
{
    return string.Join("", MD5.Create().ComputeHash(Encoding.ASCII.GetBytes(itemToHash)).Select(s => s.ToString("x2")));
}

Answer 3

For my part, I purpose this function i use to get the gravatar picture profil:

you can use it like you want

public string getGravatarPicture()
    {
        MD5 md5 = new MD5CryptoServiceProvider();
        Byte[] originalBytes = ASCIIEncoding.Default.GetBytes(email.ToLower());
        Byte[] encodedBytes = md5.ComputeHash(originalBytes);

        string hash = BitConverter.ToString(encodedBytes).Replace("-", "").ToLower();
        return "http://www.gravatar.com/avatar/"+hash+"?d=mm";
    }

Answer 4

Using the namespace System.Security.Cryptography:

MD5 md5 = new MD5CryptoServiceProvider();
Byte[] originalBytes = ASCIIEncoding.Default.GetBytes(originalPassword);
Byte[]  encodedBytes = md5.ComputeHash(originalBytes);

return BitConverter.ToString(encodedBytes);

or FormsAuthentication.HashPasswordForStoringInConfigFile method