在 C# 中加密并在 Flex 中解密 [英] Encrypt in C# and decrypt in Flex

问题描述

我需要在 Flex 中解密一些在 C# 中加密并写入文件的数据.为简单起见，我使用 as3crypto As3 库和 Bruce Schneier C# 库选择了河豚.

I need to decrypt some data in Flex that is encrypted in C# and written to a file. I settled on blowfish for simplicity's sake using the as3crypto As3 library and Bruce Schneier C# library.

AS3 as3crypto 链接

Bruce Schneier C# 河豚链接

我可以得到一个短字符串在 C# 中加密并在 Flex 中解密但是更长的字符串无法产生结果，我不知道我错过了什么?

I can get a short string to encrypt in C# and decrypt in Flex fine however longer strings just fail to produce results and I do not know what I am missing?

C#:

string reportstring = "watson?";
BlowFish b = new BlowFish("04B915BA43FEB5B6");
string cipherText = b.Encrypt_ECB(reportstring);
String plainText = b.Decrypt_ECB(cipherText);

AS3:

var txt:String =  "watson?";
var key:ByteArray = Hex.toArray("04B915BA43FEB5B6");
var blowfish:BlowFishKey = new BlowFishKey(key);                
var dataBytes:ByteArray = new ByteArray();
dataBytes=Hex.toArray(Hex.fromString(txt));
blowfish.encrypt(dataBytes);
blowfish.decrypt(dataBytes);

更新，一些示例

工作

加密字符串 = "watson?"

C# 产生:1514ea36fecfd5f5

C# produces: 1514ea36fecfd5f5

AS3 产生:1514ea36fecfd5f5

AS3 produces: 1514ea36fecfd5f5

不工作

加密字符串 = "whats up watson?"

C# 产生:3ea9808a4b9f74aaa8e54fe682947673

C# produces: 3ea9808a4b9f74aaa8e54fe682947673

AS3 产生:3ea9808a4b9f74aa20776174736f6e3f

AS3 produces: 3ea9808a4b9f74aa20776174736f6e3f

非常相似但不匹配

如果我在 C# 中解密 AS3 密码，我会得到:

if I decrypt the AS3 cipher in C# I get :

怎么了?`r???

如果我在 AS3 中解密 C# 密码，我会得到:

if I decrypt the C# cipher in AS3 I get :

whats up¨åO悔vs

whats up¨åO悔vs

推荐答案

AS3 代码似乎不正确.工作示例代码:

The AS3 code seems to be incorrect. Working example code:

import com.hurlant.util.Hex;
import com.hurlant.util.Base64;
import com.hurlant.crypto.Crypto;
import flash.utils.ByteArray;
import com.hurlant.crypto.symmetric.IPad;
import com.hurlant.crypto.symmetric.ICipher;
import com.hurlant.crypto.symmetric.NullPad;
import com.hurlant.crypto.symmetric.BlowFishKey;

function encrypt($text:String, $cryptKey:ByteArray):String
{
    var iPad:IPad = new NullPad();
    var crypt = Crypto.getCipher('blowfish-ecb',$cryptKey,iPad);
    var cryptText:ByteArray = new ByteArray();
    cryptText.writeUTFBytes( $text );
    crypt.encrypt( cryptText );
    trace( Hex.fromArray( cryptText ) );
    return null;
}   

var txt:String =  "whats up watson?";
var key:ByteArray = Hex.toArray("04B915BA43FEB5B6");

encrypt(txt, key);

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