using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
using System.Web.Security;
public static string Decrypt(string Text)
{
return Decrypt(Text, "litianping"); //密钥可以自己填写
}
public static string Decrypt(string Text, string sKey) //Desc加密
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
int len = Text.Length / 2;
byte[] inputByteArray = new byte[len];
for (int x = 0; x < len; x++)
{
int i = Convert.ToInt32(Text.Substring(x * 2, 2), 0x10);
inputByteArray[x] = (byte) i;
}
des.Key = Encoding.ASCII.GetBytes(FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
des.IV = Encoding.ASCII.GetBytes(FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
return Encoding.Default.GetString(ms.ToArray());
}
public static string Encrypt(string Text)
{
return Encrypt(Text, "litianping");
}
public static string Encrypt(string Text, string sKey) //Desc解密
{
DESCryptoServiceProvider des = new DESCryptoServiceProvider();
byte[] inputByteArray = Encoding.Default.GetBytes(Text);
des.Key = Encoding.ASCII.GetBytes(FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
des.IV = Encoding.ASCII.GetBytes(FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
MemoryStream ms = new 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();
}