Hello,
I am new with cryptopp,i try to encrydpt and decrypt text from a file.
I alway receive this error CryptoPP::InvalidCiphertext at memory location
0x0012efe4 just *after these lines* :
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
CryptoPP::StreamTransformationFilter stfDecryptor(cbcDecryption, new
CryptoPP::StringSink( decryptedtext ) );
stfDecryptor.Put( reinterpret_cast<const unsigned char*>(
ciphertext.c_str() ), ciphertext.length());
stfDecryptor.MessageEnd();
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
*The encryption/decryption code:*
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
BOOL Encryption()
{
//
// Key and IV setup
//AES encryption uses a secret key of a variable length (128-bit,
196-bit or 256-
//bit). This key is secretly exchanged between two parties before
communication
//begins. DEFAULT_KEYLENGTH= 16 bytes
byte key[ CryptoPP::AES::DEFAULT_KEYLENGTH ], iv[
CryptoPP::AES::BLOCKSIZE ];
memset( key, 0x00, CryptoPP::AES::DEFAULT_KEYLENGTH );
memset( iv, 0x00, CryptoPP::AES::BLOCKSIZE );
HW_PROFILE_INFO hwProfileInfo;
GetCurrentHwProfile(&hwProfileInfo);
(hwProfileInfo.szHwProfileGuid, strlen(hwProfileInfo.szHwProfileGuid), key);
(hwProfileInfo.szHwProfileGuid, strlen(hwProfileInfo.szHwProfileGuid), iv);
//
// String and Sink setup
//
string STRING;
ifstream infile;
infile.open ("test2.txt");
getline(infile,STRING, '\0'); // Saves the line in STRING.
char cFilm[1000];
strcpy(cFilm,STRING.c_str());
infile.close();
std::string plaintext = cFilm;
std::string ciphertext;
std::string decryptedtext;
//
// Dump Plain Text
//
std::cout << "Plain Text (" << plaintext.size() << " bytes)" <<
std::endl;
std::cout << plaintext;
std::cout << std::endl << std::endl;
//
// Create Cipher Text
//
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();
//
// Dump Cipher Text
//
ofstream write ("test2a.txt", ios::out | ios::binary);
int at = ciphertext.length()+ 1;
write.write(ciphertext.c_str(),at);
write.close();
ciphertext.erase();
remove("test2.txt");
rename("test2a.txt","c:\\test2.txt");
return 0;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
BOOL Decryption()
{
//
// Key and IV setup
//AES encryption uses a secret key of a variable length (128-bit,
196-bit or 256-
//bit). This key is secretly exchanged between two parties before
communication
//begins. DEFAULT_KEYLENGTH= 16 bytes
byte key[ CryptoPP::AES::DEFAULT_KEYLENGTH ], iv[
CryptoPP::AES::BLOCKSIZE ];
memset( key, 0x00, CryptoPP::AES::DEFAULT_KEYLENGTH );
memset( iv, 0x00, CryptoPP::AES::BLOCKSIZE );
HW_PROFILE_INFO hwProfileInfo;
GetCurrentHwProfile(&hwProfileInfo);
//char* rawKey="malakagergeerwherwhewrhwehewhhwrehrewhewhrewrwhherwherwh";
(hwProfileInfo.szHwProfileGuid, strlen(hwProfileInfo.szHwProfileGuid), key);
//char* rawIv="malakaherwheherwheerwhewrwherwhgerwhewrhewrrwhewrhewrherw";
(hwProfileInfo.szHwProfileGuid, strlen(hwProfileInfo.szHwProfileGuid), iv);
//
// String and Sink setup
//
string STRING2;
ifstream infile2;
infile2.open ("test2.txt",ios::binary);
getline(infile2,STRING2, '\0'); // Saves the line in STRING.
char cFilm2[1000];
strcpy(cFilm2,STRING2.c_str());
infile2.close();
std::string ciphertext (cFilm2);
std::string decryptedtext;
//
// Decrypt
//
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.length());
stfDecryptor.MessageEnd();
//
// Dump Decrypted Text
//
ofstream write ("test2a.txt", ios::out | ios::binary);
write << decryptedtext;
write.close();
decryptedtext.erase();
remove("test2.txt");
rename("test2a.txt","test2.txt");
return 0;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Anyone know how to solve this??
Thanks!
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