dbClass/LoginMd5.cs

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using System;
using System.Collections.Generic;
using System.Text;
using System.Web.Security;


namespace dbClass
{
   public  class LoginMd5
    {

        /// <summary>
        /// 自定义md5加密
        /// </summary>
        /// <param name="strTemp"></param>
        /// <returns></returns>
        public static string md5(string strTemp)
        {

            string strMd5 = null;
            if (strTemp != null)
            {
                strMd5 = FormsAuthentication.HashPasswordForStoringInConfigFile(strTemp, "MD5").ToLower();
            }
            else
            {
                strMd5 = "imibsbbs.net,aryouok?";
            }
            return strMd5;
        }
        /// <summary>
        /// 字符串截取，区分半角
        /// </summary>
        /// <param name="stringToSub"></param>
        /// <param name="len"></param>
        /// <returns></returns>
        public static string CutString(string stringToSub, int len)
        {
            ASCIIEncoding ascii = new ASCIIEncoding();
            int tempLen = 0;
            string tempString = "";
            byte[] s = ascii.GetBytes(stringToSub);
            for (int i = 0; i < s.Length; i++)
            {
                if ((int)s[i] == 63)
                {
                    tempLen += 2;
                }
                else
                {
                    tempLen += 1;
                }

                try
                {
                    tempString += stringToSub.Substring(i, 1);
                }
                catch
                {
                    break;