密钥:0123456789ABCDEF0123456789ABCDEF
密文:DC8E659612F5E0AD
明文:48B85E63C34EE31F
如上:密文经密钥解密后得到明文找了几段代码,总是得不出这样的结果啊
哪位大侠以前用过,帮忙看看,给段加解密代码,能够得出这样的结果的。实在不行,C代码也行,用C先编个动态库也用着,急啊多谢多谢
密文:DC8E659612F5E0AD
明文:48B85E63C34EE31F
如上:密文经密钥解密后得到明文找了几段代码,总是得不出这样的结果啊
哪位大侠以前用过,帮忙看看,给段加解密代码,能够得出这样的结果的。实在不行,C代码也行,用C先编个动态库也用着,急啊多谢多谢
在这个空间里有加密解密的东西吧。
找找看。我现在没有VS,没法写代码。
using System;
using System.Security.Cryptography;
using System.Collections.Generic;
using System.Text;
using System.IO;namespace MyDes
{
/// <summary>
/// 字符串加解密
/// </summary>
public static class DES
{
//默认密钥向量
private static byte[] IV = { 0x67, 0x51, 0x40, 0x2F, 0xDE, 0x0F, 0x3E,0x1A};
private static string key = "@yourkey";
/// <summary>
/// DES加密字符串
/// </summary>
/// <returns>加密成功返回加密后的字符串,失败返回源串</returns>
public static string Encrypt(string toEncryptString)
{
try
{
if (toEncryptString == null || toEncryptString == "" || toEncryptString == string.Empty)
{
return "";
}
byte[] rgbKey = Encoding.UTF8.GetBytes(key.Substring(0, 8));//
byte[] rgbIV = IV;
byte[] inputByteArray = Encoding.UTF8.GetBytes(toEncryptString);
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());
}
catch
{
return toEncryptString;
}
} /// <summary>
/// DES解密字符串
/// </summary>
/// <param name="toDecryptString">待解密的字符串</param>
/// <returns>解密成功返回解密后的字符串,失败返源串</returns>
public static string Decrypt(string toDecryptString)
{
try
{
if (toDecryptString == null || toDecryptString == "" || toDecryptString == string.Empty)
{
return "";
}
byte[] rgbKey = Encoding.UTF8.GetBytes(key);
byte[] rgbIV = IV;
byte[] inputByteArray = Convert.FromBase64String(toDecryptString);
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(), 0, mStream.ToArray().Length);
}
catch
{
return toDecryptString;
}
} /// <summary>
/// DES加密方法
/// </summary>
/// <param name="toEncryptString">明文</param>
/// <param name="Key">密钥</param>
/// <param name="IV">向量</param>
/// <returns>密文</returns>
public static string Encrypt(string toEncryptString, string Key, string IV)
{
//把密钥转换成字节数组
byte[] bytesDESKey = ASCIIEncoding.ASCII.GetBytes(Key);
//把向量转换成字节数组
byte[] bytesDESIV = ASCIIEncoding.ASCII.GetBytes(IV);
//声明1个新的DES对象
DESCryptoServiceProvider desEncrypt = new DESCryptoServiceProvider();
//开辟一块内存流
MemoryStream msEncrypt = new MemoryStream();
//把内存流对象包装成加密流对象
CryptoStream csEncrypt = new CryptoStream(msEncrypt, desEncrypt.CreateEncryptor(bytesDESKey, bytesDESIV), CryptoStreamMode.Write);
//把加密流对象包装成写入流对象
StreamWriter swEncrypt = new StreamWriter(csEncrypt);
//写入流对象写入明文
swEncrypt.WriteLine(toEncryptString);
//写入流关闭
swEncrypt.Close();
//加密流关闭
csEncrypt.Close();
//把内存流转换成字节数组,内存流现在已经是密文了
byte[] bytesCipher = msEncrypt.ToArray();
//内存流关闭
msEncrypt.Close();
//把密文字节数组转换为字符串,并返回
return Encoding.UTF8.GetString(bytesCipher, 0, bytesCipher.Length);
}
/// <summary>
/// DES解密方法
/// </summary>
/// <param name="toDecryptString">密文</param>
/// <param name="Key">密钥</param>
/// <param name="IV">向量</param>
/// <returns>明文</returns>
public static string Decrypt(string toDecryptString, string Key, string IV)
{
//把密钥转换成字节数组
byte[] bytesDESKey = ASCIIEncoding.ASCII.GetBytes(Key);
//把向量转换成字节数组
byte[] bytesDESIV = ASCIIEncoding.ASCII.GetBytes(IV);
//把密文转换成字节数组
byte[] bytesCipher = UnicodeEncoding.Unicode.GetBytes(toDecryptString);
//声明1个新的DES对象
DESCryptoServiceProvider desDecrypt = new DESCryptoServiceProvider();
//开辟一块内存流,并存放密文字节数组
MemoryStream msDecrypt = new MemoryStream(bytesCipher);
//把内存流对象包装成解密流对象
CryptoStream csDecrypt = new CryptoStream(msDecrypt, desDecrypt.CreateDecryptor(bytesDESKey, bytesDESIV), CryptoStreamMode.Read);
//把解密流对象包装成读出流对象
StreamReader srDecrypt = new StreamReader(csDecrypt);
//明文=读出流的读出内容
string strPlainText = srDecrypt.ReadLine();
//读出流关闭
srDecrypt.Close();
//解密流关闭
csDecrypt.Close();
//内存流关闭
msDecrypt.Close();
//返回明文
return strPlainText;
} }
}
我的明文密文密钥都有了
您试过了吗?
http://www.oschina.net/code/snippet_153287_4820
我跟你一样也在弄3DES 二倍长 CBC模式的加密...
3DES分二倍长和三倍长,微软封装的是三倍长,二倍长得自已写
ECB和CBC结果是一样的
/// <summary>
/// 3des二倍长加密
/// </summary>
/// <param name="key"></param>
/// <param name="iv"></param>
/// <param name="data"></param>
/// <returns></returns>
public static byte[] _3DES2Encrypt(byte[] key, byte[] iv, byte[] data)
{
byte[] key1 = new byte[8];
Array.Copy(key, 0, key1, 0, 8);
byte[] key2 = new byte[8];
Array.Copy(key, 8, key2, 0, 8);
byte[] data1 = MAC.EncryptECB(data,key1,iv);
data1 = MAC.DecryptECB(data1,key2,iv);
data1 = MAC.EncryptECB(data1, key1, iv);
return data1;
}
/// <summary>
/// 3des二倍长解密
/// </summary>
/// <param name="key"></param>
/// <param name="iv"></param>
/// <param name="data"></param>
/// <returns></returns>
public static byte[] _3DES2Descrypt(byte[] key, byte[] iv, byte[] data)
{ byte[] key1 = new byte[8];
Array.Copy(key, 0, key1, 0, 8);
byte[] key2 = new byte[8];
Array.Copy(key, 8, key2, 0, 8); byte[] data1 = MAC.DecryptECB(data, key1, iv);
data1 = MAC.EncryptECB(data1, key2, iv);
data1 = MAC.DecryptECB(data1, key1, iv);
return data1;
}ECB加解密 /// <summary>
/// ECB解密
/// </summary>
/// <param name="encryptedDataBytes"></param>
/// <param name="keys"></param>
/// <returns></returns>
public static byte[] DecryptECB(byte[] encryptedDataBytes, byte[] keys, Byte[] iv)
{
//Byte[] iv = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
//Byte[] keys = System.Text.Encoding.UTF8.GetBytes(key.Substring(0, key.Length)); //Byte[] encryptedDataBytes = System.Convert.FromBase64String(sourceData);
MemoryStream tempStream = new MemoryStream(encryptedDataBytes, 0, encryptedDataBytes.Length);
DESCryptoServiceProvider decryptor = new DESCryptoServiceProvider();
decryptor.Mode = CipherMode.ECB;
decryptor.Padding = PaddingMode.None;
CryptoStream decryptionStream = new CryptoStream(tempStream, decryptor.CreateDecryptor(keys, iv), CryptoStreamMode.Read);
//StreamReader allDataReader = new StreamReader(decryptionStream);
byte[] data = new byte[encryptedDataBytes.Length];
decryptionStream.Read(data, 0, data.Length);
decryptionStream.Close();
tempStream.Close();
return data; }
/// <summary>
/// ECB加密
/// </summary>
/// <param name="sourceDataBytes"></param>
/// <param name="keys"></param>
/// <returns></returns>
public static byte[] EncryptECB(byte[] sourceDataBytes, byte[] keys, Byte[] iv)
{ //Byte[] iv = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };
MemoryStream tempStream = new MemoryStream();
//get encryptor and encryption stream
DESCryptoServiceProvider encryptor = new DESCryptoServiceProvider();
encryptor.Mode = CipherMode.ECB;
encryptor.Padding = PaddingMode.None;
CryptoStream encryptionStream = new CryptoStream(tempStream, encryptor.CreateEncryptor(keys, iv), CryptoStreamMode.Write);
encryptionStream.Write(sourceDataBytes, 0, sourceDataBytes.Length);
encryptionStream.FlushFinalBlock();
encryptionStream.Close();
byte[] encryptedDataBytes = tempStream.ToArray();
tempStream.Close();
return encryptedDataBytes;
}