生成MD5

2015-12-13 21:53:55 访问(8486) 赞(0) 踩(0)



        /// <summary>
        /// 获得_encoding编码的MD5值
        /// </summary>
        /// <param name="s"></param>
        /// <param name="_encodingName"></param>
        /// <returns></returns>
        public static string GetMD5ByEncodingName(string s, string _encodingName)
        {
            System.Text.Encoding _encoding = null;

            if (_encodingName == null || _encodingName.Length == 0)
                _encoding = System.Text.Encoding.Default;
            else
                _encoding = System.Text.Encoding.GetEncoding(_encodingName);

            if (s == null)
                s = "";


            MD5 md5 = new MD5CryptoServiceProvider();

            byte[] t = md5.ComputeHash(_encoding.GetBytes(s));

            StringBuilder sb = new StringBuilder(32);

            for (int i = 0; i < t.Length; i++)
            {
                sb.Append(t[i].ToString("x").PadLeft(2, '0'));
            }

            return sb.ToString();
        }