md5helper.cs

断点续传,下载DEMO 是VS2008下写的,我收集的在这里共享给大家

using System;

namespace Cblang.HttpDownload
{
    /// <summary>
    /// MD5加密
    /// </summary>
    public class MD5Helper
    {
        #region
        /// <summary>
        /// MD5加密字符串
        /// </summary>
        /// <param name="data">加密内容</param>
        /// <returns></returns>
        public static string MD5Encrypt(string data)
        {
            byte[] b = System.Text.Encoding.Default.GetBytes(data);
            return MD5Encrypt(b);
        }
        /// <summary>
        /// MD5加密字符串
        /// 与System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile一致
        /// </summary>
        ///<param name="data">加密内容</param>
        /// <returns></returns>
        public static string MD5Encrypt(byte[] data)
        {
            data = new System.Security.Cryptography.MD5CryptoServiceProvider().ComputeHash(data);
            string ret = string.Empty;
            for (int i = 0; i < data.Length; i++)
            {
                ret += data[i].ToString("x").PadLeft(2, '0');
            }
            return ret.ToUpper(); ;
        }
        #endregion
    }
}