using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Security.Cryptography;
using System.IO;
using System.Text;
public
class
Des{
private
static
string skey =
"12345678"
;
#region DESEnCode DES加密
public
static
string DESEnCode(string pToEncrypt, string sKey)
{
pToEncrypt = HttpContext.Current.Server.UrlEncode(pToEncrypt);
DESCryptoServiceProvider des =
new
DESCryptoServiceProvider();
byte[] inputByteArray = Encoding.GetEncoding(
"UTF-8"
).GetBytes(pToEncrypt);
des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
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);
}
ret.ToString();
return
ret.ToString();
}
#endregion
#region DESDeCode DES解密
public
static
string DESDeCode(string pToDecrypt, string sKey)
{
DESCryptoServiceProvider des =
new
DESCryptoServiceProvider();
byte[] inputByteArray =
new
byte[pToDecrypt.Length / 2];
for
(int x = 0; x < pToDecrypt.Length / 2; x++)
{
int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16));
inputByteArray[x] = (byte)i;
}
des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
MemoryStream ms =
new
MemoryStream();
CryptoStream cs =
new
CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(inputByteArray, 0, inputByteArray.Length);
cs.FlushFinalBlock();
StringBuilder ret =
new
StringBuilder();
return
HttpContext.Current.Server.UrlDecode(System.Text.Encoding.Default.GetString(ms.ToArray()));
}
#endregion
}