Because your keys and ivs are different. Im not familiar with PHP, but it
appears you are using hex values in the C++ app and the same values in base
10 in the PHP app.
On Wednesday, December 22, 2010 12:28:43 AM UTC-5, raydan wrote:
>
> PHP Code:
> -----------------------------------------
> <?php
> $msg = "abcd";
> $key =
> "1234567890123456789012345678901234567890123456789012345678901234";
> $key = pack("H".strlen($key), $key);
> $iv =
> "1111111111222222222233333333334444444444555555555566666666667777";
> $iv = pack("H".strlen($iv), $iv);
> echo "key len: ".strlen($key)." iv len: ".strlen($iv);
> echo "<br/>";
> $td = mcrypt_module_open('rijndael-256', '', 'ctr', '');
> mcrypt_generic_init($td, $key, $iv);
> $e_msg = mcrypt_generic($td, $msg);
> $hex = bin2hex($e_msg);
> echo "E_Msg: ".$e_msg;
> echo "<br/>";
> echo "hex: ".$hex;
> echo "<br/>";
> mcrypt_generic_deinit($td);
> mcrypt_module_close($td);
> ?>
> -----------------------------------------
> Output:
> key len: 32 iv len: 32
> E_Msg: _ßë.
> hex: 5fdfeb2e
> -----------------------------------------
>
>
>
> Crypto++ 5.6.1, vc++2008
> Code:
> -----------------------------------------
> byte key[] =
> {0x12,0x34,0x56,0x78,0x90,0x12,0x34,0x56,0x78,0x90,0x12,0x34,0x56,0x78,0x90,0x12,0x34,0x56,0x78,0x90,0x12,0x34,0x56,0x78,0x90,0x12,0x34,0x56,0x78,0x90,0x12,0x34};
>
>
> byte iv[] =
> {0x11,0x11,0x11,0x11,0x11,0x22,0x22,0x22,0x22,0x22,0x33,0x33,0x33,0x33,0x33,0x44,0x44,0x44,0x44,0x44,0x55,0x55,0x55,0x55,0x55,0x66,0x66,0x66,0x66,0x66,0x77,0x77};
>
>
>
> string plain = "abcd";
>
> string cipher;
>
>
> cout << "key len: " << sizeof(key) << " iv len: " << sizeof(iv) <<
> endl;
>
> Rijndael::Encryption rijEncryption(key,sizeof(key));
>
> CTR_Mode_ExternalCipher::Encryption ctrEncryption(rijEncryption,
> iv);
>
> StreamTransformationFilter stfEncryptor(ctrEncryption, new
> StringSink(cipher), StreamTransformationFilter::NO_PADDING);
>
> stfEncryptor.Put(reinterpret_cast<const unsigned
> char*>(plain.c_str()), plain.length()+1);
> stfEncryptor.MessageEnd();
>
> for(size_t i = 0; i < cipher.size(); i++) {
> cout << "0x" << hex << (0xFF &
> static_cast<byte>(cipher[i])) << " ";
> }
> -----------------------------------------
> Output:
> key len: 32 iv len: 32
> 0x72 0x1e 0x29 0x88 0x64
>
>
>
> The output are different.
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