.net下MD5算法和加盐

MD5方法：

public static string GetMD5(string sDataIn)
        {
            MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
            byte[] bytValue, bytHash;
            bytValue = System.Text.Encoding.UTF8.GetBytes(sDataIn);
            bytHash = md5.ComputeHash(bytValue);
            md5.Clear();
            string sTemp = "";
            for (int i = 0; i < bytHash.Length; i++)
            {
                sTemp += bytHash[i].ToString("X").PadLeft(2, '0');
            }
            return sTemp.ToLower();
        }

密码加盐
        public static string GetPasswordSalt()
        {
            string getPasswordSalt= ConfigurationManager.AppSettings["passwordSalt"];
            return getPasswordSalt;
        }

passwordSalt就是所谓的盐，其内容存放在App.config文件里，app中代码：

<configuration>
  <appSettings>
    <add key="passwordSalt" value="1234"/>//1234为盐，用参数passwordSalt表示
  </appSettings>
</configuration>