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-/**
- * @file AESCrypt.cpp
- * @brief AESCrypt class definitions
- * @author manzerbredes
- * @date 8 Mars 2015
- *
- * Contain all definitions of AESCrypt class.
- *
- */
-
-#include "AESCrypt.hpp"
-
-//Constructor
-AESCrypt::AESCrypt(){
- this->hash=HASHCrypt(); //Init hash attribute
-}
-
-//Destructor
-AESCrypt::~AESCrypt(){
-}
-
-
-//Encrypt string
-std::string AESCrypt::encrypt(std::string key, std::string data){
-
- //Generate SHA-256
- byte digest[32];
- hash.getSHA_256(key, digest, (int)sizeof(digest));
-
-
-
-
- //Add padding for AES
- int pad=0;
- int tmpL=data.length();
- while(tmpL % 128 != 0){
- tmpL++;
- pad++;
-
- }
- std::cout <<pad;
- while(data.length() % 128 != 0){
- data+=pad;
- }
-
-
- //Contain data encrypted
- std::string cipher;
-
- //Use try, catch to be ensure no problems happening
- try{
- //Create encoder to encrypt data
- CryptoPP::ECB_Mode<CryptoPP::AES>::Encryption encoder;
- encoder.SetKey( digest, sizeof(digest) );
-
- //Encrypt data with StreamTransformationFilter with NO PADDING
- CryptoPP::StringSource ss1(data, true,
- new CryptoPP::StreamTransformationFilter( encoder,
- new CryptoPP::StringSink( cipher ),
- CryptoPP::StreamTransformationFilter::PKCS_PADDING
-
- )
- );
- }
- catch( CryptoPP::Exception& e )
- {
- std::cerr << e.what() << std::endl;
- exit(EXIT_FAILURE);
- }
-
- //return encrypted data
- return cipher;
-
-}
-
-//Decrypt string
-std::string AESCrypt::decrypt(std::string key, std::string data){
-
-
- byte digest[32];
- hash.getSHA_256(key, digest, (int)sizeof(digest));
-
-
- //Contain data decrypted
- std::string cipher;
-
- //Use try, catch to be ensure no problems happening
- try {
-
- //Create decoder to encrypt data
- CryptoPP::ECB_Mode< CryptoPP::AES >::Decryption decoder;
- decoder.SetKey( digest, sizeof(digest) );
-
- //Decrypt data with StreamTransformationFilter with NO PADDING
- CryptoPP::StringSource ss3( data, true,
- new CryptoPP::StreamTransformationFilter( decoder,
- new CryptoPP::StringSink( cipher ),
- CryptoPP::StreamTransformationFilter::PKCS_PADDING
- )
- );
- }
- catch( CryptoPP::Exception& e )
- {
- std::cerr << e.what() << std::endl;
- exit(1);
- }
-
- //return decrypted data
- return cipher;
-}