Tsr.Common/Encrypt.cs

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using System;
using System.Collections.Generic;
using System.Text;
using System.Security.Cryptography;
using System.IO;

namespace Tsr.Common
{
    public class Encrypt
    {
        //默认密钥向量
        private static byte[] Keys = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
        /// <summary>
        /// MD5加密算法
        /// </summary>
        /// <param name="PassWord"></param>
        /// <returns></returns>
        public static string EncryptMD5(string PassWord)
        {
            MD5 md5 = new MD5CryptoServiceProvider();
            byte[] data = System.Text.Encoding.Default.GetBytes(PassWord);
            byte[] md5data = md5.ComputeHash(data);
            md5.Clear();
            string str = "";
            for (int i = 0; i < md5data.Length - 1; i++)
            {
                str += md5data[i].ToString("x").PadLeft(2, '0');
            }
            return str;
        }
        /// <summary>
        /// MD5加密字符串处理
        /// </summary>
        /// <param name="Half">加密是16位还是32位；如果为true为16位</param>
        /// <param name="Input">待加密码字符串</param>
        /// <returns></returns>
        public static string EncryptMD5(string Input, bool Half)
        {
            string output = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(Input, "MD5").ToLower();
            if (Half)//16位MD5加密（取32位加密的9~25字符）
                output = output.Substring(8, 16);
            return output;
        }

        /// <summary>
        /// 凯撒加密算法
        /// </summary>
        /// <param name="PassWord"></param>
        /// <returns></returns>
        public static string EncryptCaesar(string PassWord)
        {
            //int spaceNum = 5;
            //char[] c = PassWord.ToCharArray();
            //string strCaesr = "";
            //for (int i = 0; i < PassWord.Length; i++)
            //{
            //    string ins = c[i].ToString();
            //    string outs = "";
            //    bool ischar="abcdefghijklmnopqrstuvwxyz".Contains(ins.ToLower());
            //    bool isToUpperChar = ischar && (ins.ToUpper() == ins);