Raysoft.Framework.Encrypt.EncryptHelper

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//////////////////////////////////////////ver     :1.1.0.0//Create by  :Ray//Create Date:2012-11-29//last Update:2012-11-30//Description:Ray Encrypt Utilty//UpdateLog://2012-11-30新增MD5Encrypt()//2012-11-30新增HashEncrypt()//2012-11-30新增MD5HashCodeEncrypt()//2012-11-30新增HashCodeMD5Encrypt/////////////////////////////////////////using System;using System.Collections.Generic;using System.Text;using System.Security.Cryptography;using System.IO;namespace Raysoft.Framework.Encrypt{    public partial class EncryptHelper    {        public EncryptHelper()        { }        /// <summary>          ///方法一:          ///此种加密之后的字符串是三十二位的(字母加数据)字符串           /// Example:password是admin 加密变成后21232f297a57a5a743894a0e4a801fc3          /// </summary>          /// <param name="beforeStr"></param>          /// <returns></returns>          public static string MD5Encrypt(string beforeStr)        {            string afterString = "";            try            {                MD5 md5 = MD5.Create();                byte[] hashs = md5.ComputeHash(Encoding.UTF8.GetBytes(beforeStr));                foreach (byte by in hashs)                    //这里是字母加上数据进行加密.//3y 可以,y3不可以或 x3j等应该是超过32位不可以                      afterString += by.ToString("x2");            }            catch (Exception ex)            {                ex.Message.ToString();            }            return afterString;        }        /// <summary>          /// 方法:二          ///HashAlgorithm加密          /// 这种加密是 字母加-加字符           /// Example:password是admin 加密变成后19-A2-85-41-44-B6-3A-8F-76-17-A6-F2-25-01-9B-12          /// </summary>          /// <param name="password"></param>          /// <returns></returns>          public String HashEncrypt(string password)        {            Byte[] hashedBytes = null;            try            {                Byte[] clearBytes = new UnicodeEncoding().GetBytes(password);                hashedBytes = ((HashAlgorithm)CryptoConfig.CreateFromName("MD5")).ComputeHash(clearBytes);            }            catch (Exception ex)            {                ex.Message.ToString();            }            return BitConverter.ToString(hashedBytes);//MD5加密          }        /// <summary>          /// 方法:三          /// MD5  +  HashCode加密          /// Example:password是admin 加密变成后 895b7da64943134be17b825ce118456c          /// </summary>          /// <returns></returns>          public String MD5HashCodeEncrypt(string EncryptPwd)        {            return MD5Encrypt(HashEncrypt(EncryptPwd)); //在HashEncrypt基础上再MD5          }        /// <summary>          /// 方法:四          /// HashCode+MD5 加密          /// Example:password是admin 加密变成后EB-1D-6D-E2-FC-F1-CD-94-4D-75-78-E6-3D-7A-12-32          /// </summary>          /// <param name="EncryptPwd"></param>          /// <returns></returns>          public String HashCodeMD5Encrypt(string EncryptPwd)        {            return HashEncrypt(MD5Encrypt(EncryptPwd)); //在MD5基础再HashCode          }        /// <summary>          /// 方法:五          /// </summary>          /// <param name="EncryptPwd"></param>          /// <returns></returns>        public String HashMD5Encrypt(string EncryptPwd)        {            return HashCodeMD5Encrypt(HashCodeMD5Encrypt(EncryptPwd)); //在HashCodeMD5Encrypt基础再HashCode          }        /// <summary>          /// 方法:六          /// 哈哈 是不是  有点晕呢？          /// 大家伙可以继续写下去          /// </summary>          /// <param name="EncryptPwd"></param>          /// <returns></returns>          public String MD5HashEncrypt(string EncryptPwd)        {            return MD5HashCodeEncrypt(MD5HashCodeEncrypt(EncryptPwd)); //在MD5基础再HashCode          }        private static byte[] IV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };        public static String Encrypt(String Key, String str)        {            byte[] bKey = Encoding.UTF8.GetBytes(Key.Substring(0, 8));            byte[] bIV = IV;            byte[] bStr = Encoding.UTF8.GetBytes(str);            try            {                DESCryptoServiceProvider desc = new DESCryptoServiceProvider();                MemoryStream mStream = new MemoryStream();                CryptoStream cStream = new CryptoStream(mStream, desc.CreateEncryptor(bKey, bIV), CryptoStreamMode.Write);                cStream.Write(bStr, 0, bStr.Length);                cStream.FlushFinalBlock();                return Convert.ToBase64String(mStream.ToArray());            }            catch            {                return string.Empty;            }        }        public static String Decrypt(String Key, String DecryptStr)        {            try            {                byte[] bKey = Encoding.UTF8.GetBytes(Key.Substring(0, 8));                byte[] bIV = IV;                byte[] bStr = Convert.FromBase64String(DecryptStr);                DESCryptoServiceProvider desc = new DESCryptoServiceProvider();                MemoryStream mStream = new MemoryStream();                CryptoStream cStream = new CryptoStream(mStream, desc.CreateDecryptor(bKey, bIV), CryptoStreamMode.Write);                cStream.Write(bStr, 0, bStr.Length);                cStream.FlushFinalBlock();                return Encoding.UTF8.GetString(mStream.ToArray());            }            catch            {                return string.Empty;            }        }    }}
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