MD5 (Message-Digest algorithm 5)
public static string Md5Hash(string pass)
{
MD5 md5 = MD5CryptoServiceProvider.Create();
byte[] dataMd5 = md5.ComputeHash(Encoding.Default.GetBytes(pass));
StringBuilder sb = new StringBuilder();
for (int i = 0; i < dataMd5.Length; i++)
sb.AppendFormat(“{0:x2}”, dataMd5[i]);
return sb.ToString();
}