ASP.NET

public enum HashMethods
{
    SHA512            
}

private static string HashSHA512Managed(string saltedPassword)
{
    UnicodeEncoding uniEncode = new UnicodeEncoding();
    SHA512Managed sha = new SHA512Managed();
    byte[] bytePassword = uniEncode.GetBytes(saltedPassword);
    byte[] hash = sha.ComputeHash(bytePassword);
    return Convert.ToBase64String(hash);
}

public static string EncryptPassword(string password, string passwordSalt, HashMethods method)
{
    string siteWideSalt = Guid.NewGuid().ToString();
    string encryptedPassword;
    switch (method)
    {
        case HashMethods.SHA512:
            encryptedPassword = HashSHA512Managed(siteWideSalt + password + passwordSalt);
            break;
        default:
            encryptedPassword = HashSHA512Managed(siteWideSalt + password + passwordSalt);
            break;
    }

    return encryptedPassword;
}

www.mydomain.com/signin

routes.MapPageRoute("volow_signup", "Signup", "~/Signup.aspx");