C# .NET MD5 HASH

using System;

using System.Security.Cryptography;

using System.Text;

namespace AAA

{

    /// <summary>

    /// MD5Util 的摘要说明。

    /// </summary>

    public class MD5Util

    {

        public MD5Util()

        {

            //

            // TODO: 在此处添加构造函数逻辑

            //

        }

        /** 获取大写的MD5签名结果 */

        public static string GetMD5(string encypStr, string charset)

        {

            string retStr;

            MD5CryptoServiceProvider m5 = new MD5CryptoServiceProvider();

            //创建md5对象

            byte[] inputBye;

            byte[] outputBye;

            //使用GB2312编码方式把字符串转化为字节数组．

            try

            {

                inputBye = Encoding.GetEncoding(charset).GetBytes(encypStr);

            }

            catch (Exception ex)

            {

                inputBye = Encoding.GetEncoding("GB2312").GetBytes(encypStr);

            }

            outputBye = m5.ComputeHash(inputBye);

            retStr = System.BitConverter.ToString(outputBye);

            retStr = retStr.Replace("-", "").ToUpper();

            return retStr;

        }

    }

}

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