Ich versuche gerade ein simples Programm zu testen, auf dem ich dann weiter aufbauen will später. Leider bekomme ich dieses schon nicht zum laufen (was wohl daran liegt, dass mein letztes C++ Projekt ein paar Jahre zurück liegt). Wo liegt mein Fehler?
Nutze CryptoPP...

#include <iostream>

// Crypto++ Includes
#include <cryptopp/cryptlib.h>
#include <cryptopp/modes.h>
#include <cryptopp/filters.h>

using namespace CryptoPP;

int main(int argc, char* argv[]) {

    // Key and IV setup
    byte key[ AES::DEFAULT_KEYLENGTH ]; 
    byte iv[ AES::BLOCKSIZE ];

    ::memset( key, 0x01, AES::DEFAULT_KEYLENGTH );
    ::memset(  iv, 0x01, AES::BLOCKSIZE );

    // Message M
    std::string PlainText = "Hello World";

    // Cipher Text Sink
    std::string CipherText;

    // Encryptor
    ECB_Mode<AES>::Encryption Encryptor( key, sizeof(key), iv );

    // Encryption
    StringSource( PlainText, true,
        new StreamTransformationFilter( Encryptor,
            new StringSink( CipherText )
        )
    );

    // Recovered Text Sink
    std::string RecoveredText;

    // Decryptor
    ECB_Mode<AES>::Decryption Decryptor( key, sizeof(key), iv );

    // Decryption
    StringSource( CipherText, true,
        new StreamTransformationFilter( Decryptor,
            new StringSink( RecoveredText )
        )
    );

    std::cout << "Algorithm:" << std::endl;
    std::cout << "  " << Encryptor.AlgorithmName() << std::endl;
    std::cout << "Minimum Key Size:" << std::endl;
    std::cout << "  " << Encryptor.MinKeyLength() << " bytes" << std::endl;
    std::cout << std::endl;

    std::cout << "Plain Text (" << PlainText.length() << " bytes)" << std::endl;
    std::cout << "  '" << PlainText << "'" << std::endl;
    std::cout << std::endl;

    std::cout << "Recovered Text:" << std::endl;
    std::cout << "  '" << RecoveredText << "'" << std::endl;
    std::cout << std::endl;

    return 0;
}

Beim compilieren kommt folgendes:

g++ -c -o crypt.o crypt.cpp
crypt.cpp: In function int main(int, char**)': crypt.cpp:16: error:AES' has not been declared
crypt.cpp:16: error: DEFAULT_KEYLENGTH' undeclared (first use this function) crypt.cpp:16: error: (Each undeclared identifier is reported only once for each function it appears in.) crypt.cpp:17: error:AES' has not been declared
crypt.cpp:17: error: BLOCKSIZE' undeclared (first use this function) crypt.cpp:19: error:key' undeclared (first use this function)
crypt.cpp:19: error: AES' has not been declared crypt.cpp:20: error:iv' undeclared (first use this function)
crypt.cpp:20: error: AES' has not been declared crypt.cpp:29: error:AES' undeclared (first use this function)
crypt.cpp:29: error: template argument 1 is invalid
crypt.cpp:29: error: Encryption' does not name a type crypt.cpp:33: error:Encryptor' undeclared (first use this function)
crypt.cpp:42: error: template argument 1 is invalid
crypt.cpp:42: error: Decryption' does not name a type crypt.cpp:46: error:Decryptor' undeclared (first use this function)
make: *** [crypt.o] Error 1

#include <cryptopp/aes.h>

Wenn du meinst, die Headerdateien sollten stimmen, so schau doch in ihnen nach, ob die entsprechenden Bezeichner auch irgendwo deklariert sind.