c# md5
还可以加盐,更难以破解
public static string GetMD5(string sDataIn) { MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider(); byte[] btvalue, bthach; btvalue = System.Text.Encoding.UTF8.GetBytes(sDataIn); bthach = md5.ComputeHash(btvalue); md5.Clear(); string sTemp = ""; for (int i = 0; i < bthach.Length; i++) { sTemp += bthach[i].ToString("X").PadLeft(2, '0'); } return sTemp.ToLower(); }