C# DES加密/解密类

来源：互联网发布：subnautica mac 编辑：程序博客网时间：2024/05/17 03:58
using System;using System.Security.Cryptography;  using System.Text;namespace mydeshelper{        /// <summary>        /// DES加密/解密类。        /// </summary>        public class DESEncrypt        {                public DESEncrypt()                {                                       }                 #region ========加密========           /// <summary>        /// 加密        /// </summary>        /// <param name="Text"></param>        /// <returns></returns>                public static string Encrypt(string Text)                 {                        return Encrypt(Text,"MATICSOFT");                }                /// <summary>                 /// 加密数据                 /// </summary>                 /// <param name="Text"></param>                 /// <param name="sKey"></param>                 /// <returns></returns>                 public static string Encrypt(string Text,string sKey)                 {                         DESCryptoServiceProvider des = new DESCryptoServiceProvider();                         byte[] inputByteArray;                         inputByteArray=Encoding.Default.GetBytes(Text);                         des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));                         des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));                         System.IO.MemoryStream ms=new System.IO.MemoryStream();                         CryptoStream cs=new CryptoStream(ms,des.CreateEncryptor(),CryptoStreamMode.Write);                         cs.Write(inputByteArray,0,inputByteArray.Length);                         cs.FlushFinalBlock();                         StringBuilder ret=new StringBuilder();                         foreach( byte b in ms.ToArray())                         {                                 ret.AppendFormat("{0:X2}",b);                         }                         return ret.ToString();                 }                  #endregion                                 #region ========解密========               /// <summary>        /// 解密        /// </summary>        /// <param name="Text"></param>        /// <returns></returns>                public static string Decrypt(string Text)                 {                        return Decrypt(Text,"MATICSOFT");                }                /// <summary>                 /// 解密数据                 /// </summary>                 /// <param name="Text"></param>                 /// <param name="sKey"></param>                 /// <returns></returns>                 public static string Decrypt(string Text,string sKey)                 {                         DESCryptoServiceProvider des = new DESCryptoServiceProvider();                         int len;                         len=Text.Length/2;                         byte[] inputByteArray = new byte[len];                         int x,i;                         for(x=0;x<len;x++)                         {                                 i = Convert.ToInt32(Text.Substring(x * 2, 2), 16);                                 inputByteArray[x]=(byte)i;                         }                         des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));                         des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));                         System.IO.MemoryStream ms=new System.IO.MemoryStream();                         CryptoStream cs=new CryptoStream(ms,des.CreateDecryptor(),CryptoStreamMode.Write);                         cs.Write(inputByteArray,0,inputByteArray.Length);                         cs.FlushFinalBlock();                         return Encoding.Default.GetString(ms.ToArray());                 }                   #endregion           }}
0 0