C# MD5 Şifreleme

public static string MD5Sifrele(string sifre)
{
    MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
 
    byte[] btr = Encoding.UTF8.GetBytes(sifre);
    btr = md5.ComputeHash(btr);
 
    StringBuilder sb = new StringBuilder();
 
    foreach (byte ba in btr)
    {
        sb.Append(ba.ToString("x2").ToLower());
    }
    return sb.ToString();
}