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我已經給出了.key(abc.key)文件。 使用上述.key文件,加密和解密在Java中完成。在這裏我需要使用C#.net來實現相同的加密和解密功能。如何使用AES算法加密
請給我想法如何解決這個問題。我是這些密碼學的新手。
它們在java中設置的一些參數如下。希望它不會有什麼想法
String keyFile="abc.key";
String keyAlgorithm= "AES";
String cipherTransformation="AES/CBC/PKCS5Padding";
String needtoEncStr = "Password1";
任何幫助將不勝感激。
更新:
@daveBM:我用BouncyCastle的但m到處不同的結果(未一樣的java輸出)。下面是我的完整代碼
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Engines;
using Org.BouncyCastle.Crypto.Generators;
using Org.BouncyCastle.Crypto.Modes;
using Org.BouncyCastle.Crypto.Paddings;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Security;
using Org.BouncyCastle.Utilities.Encoders;
public class BCEngine
{
private readonly Encoding _encoding;
private readonly IBlockCipher _blockCipher;
private PaddedBufferedBlockCipher _cipher;
private IBlockCipherPadding _padding;
public BCEngine(IBlockCipher blockCipher, Encoding encoding)
{
_blockCipher = blockCipher;
_encoding = encoding;
}
public void SetPadding(IBlockCipherPadding padding)
{
if (padding != null)
_padding = padding;
}
public string Encrypt(string plain, string key)
{
byte[] result = BouncyCastleCrypto(true, _encoding.GetBytes(plain), key);
return Convert.ToBase64String(result);
}
public string Decrypt(string cipher, string key)
{
byte[] result = BouncyCastleCrypto(false, Convert.FromBase64String(cipher), key);
return _encoding.GetString(result);
}
/// <summary>
///
/// </summary>
/// <param name="forEncrypt"></param>
/// <param name="input"></param>
/// <param name="key"></param>
/// <returns></returns>
/// <exception cref="CryptoException"></exception>
private byte[] BouncyCastleCrypto(bool forEncrypt, byte[] input, string key)
{
try
{
_cipher = _padding == null ? new PaddedBufferedBlockCipher(_blockCipher) : new PaddedBufferedBlockCipher(_blockCipher, _padding);
byte[] keyByte = _encoding.GetBytes(key);
_cipher.Init(forEncrypt, new KeyParameter(keyByte));
return _cipher.DoFinal(input);
}
catch (Org.BouncyCastle.Crypto.CryptoException ex)
{
throw new CryptoException(ex.Message);
}
}
}
static void Main(string[] args)
{
Encoding _encoding;
IBlockCipherPadding _padding;
string key = "abc.key";
Stream inStr = null;
inStr = File.OpenRead(key);
Stream stream = inStr;
byte[] bytes = new byte[stream.Length];
stream.Position = 0;
stream.Read(bytes, 0, (int)stream.Length);
string data1 = Encoding.UTF8.GetString(bytes); // this is your string.
_encoding = Encoding.ASCII;
Pkcs7Padding pkcs = new Pkcs7Padding();
_padding = pkcs;
BCEngine bcEngine = new BCEngine(new AesEngine(), _encoding);
bcEngine.SetPadding(_padding);
string data=bcEngine.Encrypt("AbcDefg12$", data1);
}
我得到這個輸出「S2jjvVJVKfGodPfMuI4v + G ==」當我的預期輸出是「3df36eb77ccfc05e264a6212c2db5380」 ...請讓我知道了什麼錯誤。
可能不是一個很好的想法,在世界範圍內發佈您的密鑰。 – 2014-09-23 15:36:11
在這裏回答:http://lamahashim.blogspot.com/2009/08/encyptiondecryption-in-c-and-java.html – mikeswright49 2014-09-23 15:36:50
使用彈性城堡庫 - 並做一些谷歌搜索 - 它更容易與www一起工作。 bouncycastle.org – daveBM 2014-09-23 16:03:57