crypt.h

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#ifndef CRYPT_H
#define CRYPT_H
 
#include "../stdext/types.h"
#include <string>
 
#include <boost/uuid/uuid.hpp>
#ifdef USE_GMP
#include <gmp.h>
#else
typedef struct rsa_st RSA;
#endif
 
class Crypt
{
public:
    Crypt();
    ~Crypt();
 
    std::string base64Encode(const std::string& decoded_string);
    std::string base64Decode(const std::string& encoded_string);
    std::string xorCrypt(const std::string& buffer, const std::string& key);
    std::string encrypt(const std::string& decrypted_string) { return _encrypt(decrypted_string, true); }
    std::string decrypt(const std::string& encrypted_string) { return _decrypt(encrypted_string, true); }
    std::string genUUID();
    bool setMachineUUID(std::string uuidstr);
    std::string getMachineUUID();
 
    void rsaSetPublicKey(const std::string& n, const std::string& e);
    void rsaSetPrivateKey(const std::string &p, const std::string &q, const std::string &d);
    bool rsaEncrypt(unsigned char *msg, int size);
    bool rsaDecrypt(unsigned char *msg, int size);
    int rsaGetSize();
 
private:
    std::string _encrypt(const std::string& decrypted_string, bool useMachineUUID);
    std::string _decrypt(const std::string& encrypted_string, bool useMachineUUID);
    std::string getCryptKey(bool useMachineUUID);
    boost::uuids::uuid m_machineUUID;
#ifdef USE_GMP
    mpz_t m_p, m_q, m_n, m_e, m_d;
#else
    RSA *m_rsa;
#endif
};
 
extern Crypt g_crypt;
 
#endif