字符串(字节)加密大人,帮忙啊,快疯了 DES加密 see: http://community.csdn.net/Expert/FAQ/FAQ_Index.asp?id=35935 http://community.csdn.net/Expert/topic/3109/3109695.xml?temp=.194256 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 using System;using System.Windows.Forms;namespace System.RASClass{ using System.Text; using System.Security.Cryptography; //引用加密类命名空间 class RASCrypt { private RSACryptoServiceProvider RSAC; public RASCrypt() { RSAC = new RSACryptoServiceProvider(); } public RASCrypt(int KeySize) //KeySize为密钥大小 { try { RSAC = new RSACryptoServiceProvider(KeySize); } catch { RSAC = new RSACryptoServiceProvider(384); } } public void Clear() { RSAC.Clear(); } public string Encrypt(string Data) //Data需要加密的数据 { //得到Unicode字符集,用于将数字转化为对应的Unicode字符集 UnicodeEncoding ByteConverter = new UnicodeEncoding(); //将Data转化为对应的数字 byte[] dataToEncrypt = ByteConverter.GetBytes(Data); byte[] encryptedData; try { //加密 RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(); RSA.ImportParameters(RSAC.ExportParameters(false)); encryptedData = RSA.Encrypt(dataToEncrypt, false); //返回加密过的string return ByteConverter.GetString( encryptedData ); } catch { return null; } } public string Decrypt(string Data) { UnicodeEncoding ByteConverter = new UnicodeEncoding(); byte[] dataToEncrypt = ByteConverter.GetBytes(Data); byte[] decryptedData; try { RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(); RSA.ImportParameters(RSAC.ExportParameters(true)); decryptedData = RSA.Decrypt(dataToEncrypt, false); return ByteConverter.GetString(decryptedData); } catch //(CryptographicException e) { return null; } } } } 我忘了是哪个正确了,你试一下吧!:)using System;namespace System{ using System.Text; using System.Security.Cryptography; //引用加密类命名空间 class Crypto { private static RSACryptoServiceProvider RSAC = new RSACryptoServiceProvider(384); public static string Encrypt(string Data) //Data需要加密的数据 { //得到Unicode字符集,用于将数字转化为对应的Unicode字符集 UnicodeEncoding ByteConverter = new UnicodeEncoding(); //将Data转化为对应的数字 byte[] dataToEncrypt = ByteConverter.GetBytes(Data); byte[] encryptedData; try { //加密 RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(); RSA.ImportParameters(RSAC.ExportParameters(false)); encryptedData = RSA.Encrypt(dataToEncrypt, false); //返回加密过的string return ByteConverter.GetString( encryptedData ); } catch { return null; } } public static string Decrypt(string Data) { UnicodeEncoding ByteConverter = new UnicodeEncoding(); byte[] dataToEncrypt = ByteConverter.GetBytes(Data); byte[] decryptedData; try { RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(); RSA.ImportParameters(RSAC.ExportParameters(true)); decryptedData = RSA.Decrypt(dataToEncrypt, false); return ByteConverter.GetString(decryptedData); } catch //(CryptographicException e) { return null; } } } } 这两个帖子解决了我的问题,非常感谢chNET(有神论者) 楼上的虽然不是3des的算法,也谢谢你的热心,揭帖了 C#公司面试题,和基础感觉也很实用,分享下。顺便给自己打下分数 如何使用时间控件 框架中使用window.open不起作用 c# 点 事件触发 c#可以做出来像qq这样的软件吗? C# SerialPort 控件 串口通信的问题 c# 的各个类的名称空间如何修改?我的都在默认的下面,太乱 .net这个课程表用什么做比较好? 为什么windows application的窗口总是闪烁? 请问C#用什么编译器,那里有下载 怎么样才能在datagrid的deletecommand中,执行删除前,谈出警告框 一个关于数据传输的问题。
using System.Windows.Forms;
namespace System.RASClass
{
using System.Text;
using System.Security.Cryptography; //引用加密类命名空间
class RASCrypt
{
private RSACryptoServiceProvider RSAC;
public RASCrypt()
{
RSAC = new RSACryptoServiceProvider();
}
public RASCrypt(int KeySize) //KeySize为密钥大小
{
try
{
RSAC = new RSACryptoServiceProvider(KeySize);
}
catch
{
RSAC = new RSACryptoServiceProvider(384);
}
} public void Clear()
{
RSAC.Clear();
}
public string Encrypt(string Data) //Data需要加密的数据
{
//得到Unicode字符集,用于将数字转化为对应的Unicode字符集
UnicodeEncoding ByteConverter = new UnicodeEncoding(); //将Data转化为对应的数字
byte[] dataToEncrypt = ByteConverter.GetBytes(Data);
byte[] encryptedData;
try
{
//加密
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
RSA.ImportParameters(RSAC.ExportParameters(false));
encryptedData = RSA.Encrypt(dataToEncrypt, false);
//返回加密过的string
return ByteConverter.GetString( encryptedData );
}
catch
{
return null;
}
}
public string Decrypt(string Data)
{
UnicodeEncoding ByteConverter = new UnicodeEncoding();
byte[] dataToEncrypt = ByteConverter.GetBytes(Data);
byte[] decryptedData;
try
{
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
RSA.ImportParameters(RSAC.ExportParameters(true));
decryptedData = RSA.Decrypt(dataToEncrypt, false);
return ByteConverter.GetString(decryptedData);
}
catch //(CryptographicException e)
{
return null;
}
}
}
}
我忘了是哪个正确了,你试一下吧!:)using System;
namespace System
{
using System.Text;
using System.Security.Cryptography; //引用加密类命名空间
class Crypto
{
private static RSACryptoServiceProvider RSAC = new RSACryptoServiceProvider(384);
public static string Encrypt(string Data) //Data需要加密的数据
{
//得到Unicode字符集,用于将数字转化为对应的Unicode字符集
UnicodeEncoding ByteConverter = new UnicodeEncoding(); //将Data转化为对应的数字
byte[] dataToEncrypt = ByteConverter.GetBytes(Data);
byte[] encryptedData;
try
{
//加密
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
RSA.ImportParameters(RSAC.ExportParameters(false));
encryptedData = RSA.Encrypt(dataToEncrypt, false);
//返回加密过的string
return ByteConverter.GetString( encryptedData );
}
catch
{
return null;
}
}
public static string Decrypt(string Data)
{
UnicodeEncoding ByteConverter = new UnicodeEncoding();
byte[] dataToEncrypt = ByteConverter.GetBytes(Data);
byte[] decryptedData;
try
{
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
RSA.ImportParameters(RSAC.ExportParameters(true));
decryptedData = RSA.Decrypt(dataToEncrypt, false);
return ByteConverter.GetString(decryptedData);
}
catch //(CryptographicException e)
{
return null;
}
}
}
}
楼上的虽然不是3des的算法,也谢谢你的热心,揭帖了