Drop in replacement for FormsAuthentication.HashPasswordForStoringInConfigFile?

This is a solution for SHA1 variant.

     public static string GetSwcSHA1(string value)
     {
        SHA1 algorithm = SHA1.Create();
        byte[] data = algorithm.ComputeHash(Encoding.UTF8.GetBytes(value));
        string sh1 = "";
        for (int i = 0; i < data.Length; i++)
        {
            sh1 += data[i].ToString("x2").ToUpperInvariant();
        }
        return sh1;
     }

For MD5 you only need to change the algorithm to:

MD5 algorithm = MD5.Create();

Hope you don’t mind, just going to add a VB.NET variant of your code above:

    Public Shared Function CreateHash(saltAndPassword) As String
        Dim Algorithm As SHA1 = SHA1.Create()
        Dim Data As Byte() = Algorithm.ComputeHash(Encoding.UTF8.GetBytes(saltAndPassword))
        Dim Hashed As String = ""

        For i As Integer = 0 To Data.Length - 1
            Hashed &= Data(i).ToString("x2").ToUpperInvariant()
        Next

        Return Hashed
    End Function