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//======================================================================
// 使用DES(数据加密算法)对数据进行加密/解密的类
//======================================================================
using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
namespace Encrypt
{
/// <summary>
/// 使用DES(数据加密算法)对数据进行加密/解密的类
/// </summary>
public sealed class DES
{
/// <summary>
/// 加密密钥
/// </summary>
public static readonly string SECRET = "L82V6ZVD6J";
public static readonly string WIRELESSSECRET = "JP248ADS0H";
//public static readonly string SECRET = "0123456789";
//默认密钥向量
private static byte[] Keys = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
/// <summary>
/// DES加密字符串
/// </summary>
/// <param name="encryptString">待加密的字符串</param>
/// <param name="encryptKey">加密密钥,要求为8位</param>
/// <returns>加密成功返回加密后的字符串,失败返回源串</returns>
public static string Encode(string encryptString, string encryptKey)
{
encryptKey = GetSubString(encryptKey, 8, "");
encryptKey = encryptKey.PadRight(8, ' ');
byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8));
byte[] rgbIV = Keys;
byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return Convert.ToBase64String(mStream.ToArray());
}
/// <summary>
/// DES解密字符串
/// </summary>
/// <param name="decryptString">待解密的字符串</param>
/// <param name="decryptKey">解密密钥,要求为8位,和加密密钥相同</param>
/// <returns>解密成功返回解密后的字符串,失败返源串</returns>
public static string Decode(string decryptString, string decryptKey)
{
try
{
decryptKey = GetSubString(decryptKey,0, 8, "");
decryptKey = decryptKey.PadRight(8, ' ');
byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey);
byte[] rgbIV = Keys;
byte[] inputByteArray = Convert.FromBase64String(decryptString);
DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return Encoding.UTF8.GetString(mStream.ToArray());
}
catch
{
return "";
}
}
#region 截取字符串函数
/// <summary>
/// 截取字符串函数
/// </summary>
/// <param name="Str">所要截取的字符串</param>
/// <param name="Num">截取字符串的长度</param>
/// <returns></returns>
public static string GetSubString(string Str, int Num)
{
if (Str == null || Str == "")
{
return "";
}
string outstr = string.Empty;
int n = 0;
foreach (char ch in Str)
{
n += System.Text.Encoding.Default.GetByteCount(ch.ToString());
if (n > Num)
{
break;
}
else
{
outstr += ch;
}
}
return outstr;
}
/// <summary>
/// 截取字符串函数,如果超过指定长度则将超出的部分用指定字符串代替
/// </summary>
/// <param name="Str">所要截取的字符串</param>
/// <param name="Num">截取字符串的长度</param>
/// <param name="Num">截取字符串后省略部分的字符串</param>
/// <returns></returns>
public static string GetSubString(string Str, int Num, string LastStr)
{
return GetSubString(Str, 0, Num, LastStr);
}
#endregion
#region 截取字符串，超过部分用指定字符串替换
/* 宗波于 2010-6-12 日添加， 来源于DiscuzNt */
/// <summary>
/// 取指定长度的字符串
/// </summary>
/// <param name="p_SrcString">要检查的字符串</param>
/// <param name="p_StartIndex">起始位置</param>
/// <param name="p_Length">指定长度</param>
/// <param name="p_TailString">用于替换的字符串</param>
/// <returns>截取后的字符串</returns>
public static string GetSubString(string p_SrcString, int p_StartIndex, int p_Length, string p_TailString)
{
string myResult = p_SrcString;
Byte[] bComments = Encoding.UTF8.GetBytes(p_SrcString);
foreach (char c in Encoding.UTF8.GetChars(bComments))
{ //当是日文或韩文时(注:中文的范围:\u4e00 - \u9fa5, 日文在\u0800 - \u4e00, 韩文为\xAC00-\xD7A3)
if ((c > '\u0800' && c < '\u4e00') || (c > '\xAC00' && c < '\xD7A3'))
{
//if (System.Text.RegularExpressions.Regex.IsMatch(p_SrcString, "[\u0800-\u4e00]+") || System.Text.RegularExpressions.Regex.IsMatch(p_SrcString, "[\xAC00-\xD7A3]+"))
//当截取的起始位置超出字段串长度时
if (p_StartIndex >= p_SrcString.Length)
return "";
else
return p_SrcString.Substring(p_StartIndex,
((p_Length + p_StartIndex) > p_SrcString.Length) ? (p_SrcString.Length - p_StartIndex) : p_Length);
}
}
if (p_Length >= 0)
{
byte[] bsSrcString = Encoding.Default.GetBytes(p_SrcString);
//当字符串长度大于起始位置
if (bsSrcString.Length > p_StartIndex)
{
int p_EndIndex = bsSrcString.Length;
//当要截取的长度在字符串的有效长度范围内
if (bsSrcString.Length > (p_StartIndex + p_Length))
{
p_EndIndex = p_Length + p_StartIndex;
}
else
{ //当不在有效范围内时,只取到字符串的结尾
p_Length = bsSrcString.Length - p_StartIndex;
p_TailString = "";
}
int nRealLength = p_Length;
int[] anResultFlag = new int[p_Length];
byte[] bsResult = null;
int nFlag = 0;
for (int i = p_StartIndex; i < p_EndIndex; i++)
{
if (bsSrcString[i] > 127)
{
nFlag++;
if (nFlag == 3)
nFlag = 1;
}
else
nFlag = 0;
anResultFlag[i] = nFlag;
}
if ((bsSrcString[p_EndIndex - 1] > 127) && (anResultFlag[p_Length - 1] == 1))
nRealLength = p_Length + 1;
bsResult = new byte[nRealLength];
Array.Copy(bsSrcString, p_StartIndex, bsResult, 0, nRealLength);
myResult = Encoding.Default.GetString(bsResult);
myResult = myResult + p_TailString;
}
}
return myResult;
}
#endregion
}
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Web;
namespace Encrypt
{
public partial class Main : Form
{
public Main()
{
InitializeComponent();
Sunisoft.IrisSkin.SkinEngine se = new Sunisoft.IrisSkin.SkinEngine();
se.SkinAllForm = true;//所有窗体应用此皮肤
se.SkinFile = @"..\..\skin\MSN.ssk";
}
/// <summary>
/// 加密
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void EncryptBtn_Click(object sender, EventArgs e)
{
if (!string.IsNullOrWhiteSpace(UnEncrypttxt.Text.Trim()))
{
Encrypttxt.Text = HttpUtility.UrlEncode(DES.Encode(UnEncrypttxt.Text.Trim(), DES.SECRET), Encoding.UTF8);
}
else
{
MessageBox.Show("请输入待加密字符串！");
}
}
/// <summary>
/// 解密
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void UnEncryptBtn_Click(object sender, EventArgs e)
{
if (!string.IsNullOrWhiteSpace(Encrypttxt.Text.Trim()))
{
UnEncrypttxt.Text = DES.Decode(HttpUtility.UrlDecode(Encrypttxt.Text.Trim(), Encoding.UTF8), DES.SECRET);
}
else
{
MessageBox.Show("请输入待解密字符串！");
}
}
/// <summary>
/// 生成cookie
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void cookieBtn_Click(object sender, EventArgs e)
{
if (string.IsNullOrWhiteSpace(UnEncrypttxt.Text.Trim()))
{
MessageBox.Show("请输入待加密字符串！");
return;
}
if (string.IsNullOrWhiteSpace(openidTxt.Text.Trim()))
{
MessageBox.Show("请输入openid！");
return;
}
cookieTxt.Text = string.Format("CooperateUserId={0}&openid={0}&MemberId={1}&MemberSysId=33", openidTxt.Text.Trim(), HttpUtility.UrlEncode(DES.Encode(UnEncrypttxt.Text.Trim(), DES.SECRET), Encoding.UTF8));
}
}
}
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