Ok I think I'm getting closer.. but have some questions
1. Is this correct?
2. How do I set my key?
3. The notes say there is no BTEA::BLOCKSIZE so what do I use?
Many thanks
Colin
int main(void){
string ciphertext = "GOBBELDYGOOK GOES HERE FOR TESTING==";
string decryptedtext;
byte key[] = {1234, 5678, 9999, 9999};
byte iv[ CryptoPP::TEA::BLOCKSIZE ];
// memset( key, 0x00, CryptoPP::BTEA::DEFAULT_KEYLENGTH );
memset( iv, 0x00, CryptoPP::TEA::BLOCKSIZE );
CryptoPP::BTEA::Decryption beaDecryption(key,
CryptoPP::BTEA::DEFAULT_KEYLENGTH);
CryptoPP::CBC_Mode_ExternalCipher::Decryption
cbcDecryption( beaDecryption, iv);
CryptoPP::StreamTransformationFilter stfDecryptor(cbcDecryption, new
CryptoPP::StringSink( decryptedtext ) );
stfDecryptor.Put( reinterpret_cast<const unsigned
char*>( ciphertext.c_str() ), ciphertext.size() );
stfDecryptor.MessageEnd();
cout << decryptedtext << "\n";
}
On 2 Apr 2008, at 14:23, Colin Bell wrote:
> Hi all
>
> I've been searching all afternoon for some Crypto++ BTEA examples.
> Besides the Crypto++ site been down, I can't find anything helpful.
>
> Would someone mind pointing me in the right direction to doing a
> BTEA encryption and then a decryption with a key ie:"1234 1111 2222
> 3333" and a string. An example would really put me out of my misery!
>
> Many many thanks
>
> Colin
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