MD5加密

public class MD5Helper
    {
        /// <summary>
        /// 生成MD5加密摘要
        /// </summary>
        /// <param name="strOriginal">字符串数据源</param>
        /// <returns>MD5加密后</returns>
        public static string MD5Encrypt(string strOriginal)
        {
            byte[] btemp = GenerateMD5(Encoding.UTF8.GetBytes(strOriginal));
            把加密后的字节转换成精度2的十六进制数据
            //StringBuilder ret = new StringBuilder();
            //foreach (byte b in btemp)
            //{
            //    ret.AppendFormat("{0:X2}", b);
            //}
            //return ret.ToString();
            return BitConverter.ToString(btemp).Replace("-", "");
        }


        /// <summary>
        /// 生成MD5加密摘要
        /// </summary>
        /// <param name="original">数据源</param>
        /// <returns>MD5加密后</returns>
        private static byte[] GenerateMD5(byte[] original)
        {
            MD5CryptoServiceProvider md5Provider = new MD5CryptoServiceProvider();
            byte[] keyhash = md5Provider.ComputeHash(original);
            return keyhash;
        }
    }