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我正在嘗試使用cryptopp中的AES編寫2個不同的函數來加密和解密數據。我想將密文作爲參數傳遞給解密函數。但是在解密函數中,它接收到一些特殊符號,因此密文&因此不能正確解密。請幫忙。傳遞AES密文作爲參數
// -- AES encryption function ----------
void Security_packetAgent::encryption(char out[])
{
std::string plaintext = out;
std::string ciphertext = "";
CryptoPP::AES::Encryption aesEncryption(key, CryptoPP::AES::DEFAULT_KEYLENGTH);
CryptoPP::CBC_Mode_ExternalCipher::Encryption cbcEncryption(aesEncryption, iv);
CryptoPP::StreamTransformationFilter stfEncryptor(cbcEncryption, new CryptoPP::StringSink(ciphertext));
stfEncryptor.Put(reinterpret_cast<const unsigned char*>(plaintext.c_str()), plaintext.length() + 1);
stfEncryptor.MessageEnd();
std::cout << "Cipher Text (" << ciphertext.size() << " bytes)" << std::endl;
for(int i = 0; i < ciphertext.size(); i++)
{
std::cout << "0x" << std::hex << (0xFF & static_cast<byte>(ciphertext[i])) << " ";
}
std::cout<<"\nMessage encrypted ...";
std::cout << std::endl << std::endl;
sprintf(out, "%s", ciphertext.c_str());
printf("Final Data: %s : %s ", out, reinterpret_cast<const unsigned char*>(ciphertext.c_str()));
}
// ---- AES decryption ------------------
void Security_packetAgent::decryption(char out[])
{
cout<<"\nCipher recieved: "<<out;
std::cout<<"\nEntered decryption ..";
std::string ciphertext = out;
std::string decryptedtext;
cout<<"\nCipher recieved: "<<reinterpret_cast<const unsigned char*>(ciphertext.c_str());
CryptoPP::AES::Decryption aesDecryption(key, CryptoPP::AES::DEFAULT_KEYLENGTH);
CryptoPP::CBC_Mode_ExternalCipher::Decryption cbcDecryption(aesDecryption, iv);
CryptoPP::StreamTransformationFilter stfDecryptor(cbcDecryption, new CryptoPP::StringSink(decryptedtext));
stfDecryptor.Put(reinterpret_cast<const unsigned char*>(ciphertext.c_str()), ciphertext.size());
stfDecryptor.MessageEnd();
std::cout << "Decrypted Text: " << std::endl;
std::cout << decryptedtext;
std::cout << std::endl << std::endl;
}
你能提供一個代碼示例重現問題嗎?此外,請顯示錯誤是什麼以及您預期的輸出是什麼。 – 2013-05-10 14:20:43
dauphic回答了你的問題。你可以考慮給予他答案的禮貌。 – jww 2013-10-02 05:27:46