#ifndef QTPRSACRYPTO_H
#define QTPRSACRYPTO_H

#include <openssl/rsa.h>
#include <openssl/pem.h>
#include <openssl/err.h>
#include "windows.h"

// 公钥指数
const unsigned char PUBLIC_EXPONENT_HEX[] =
{ 0x01, 0x00, 0x01 };

// 模数
const unsigned char MODULES_HEX[] =
{ 0xcb, 0xbc, 0xff, 0x62, 0x24, 0x11, 0x37, 0x17, 0x3e, 0xc9, 0xb1, 0xd9, 0x54, 0x01, 0xf4, \
0x4e, 0xa4, 0xed, 0x4b, 0x34, 0x8a, 0x20, 0x60, 0x65, 0xfd, 0x5f, 0x92, 0xcf, 0x10, 0x71, \
0x78, 0x58, 0x0e, 0x57, 0x67, 0xa8, 0xc7, 0x22, 0x31, 0xc9, 0x43, 0x18, 0x94, 0xe2, 0x4f, \
0x4d, 0xac, 0x57, 0xf5, 0x26, 0x8d, 0xa6, 0x48, 0xa2, 0x50, 0xd2, 0x69, 0xe2, 0x41, 0x34, \
0x54, 0xf7, 0xf4, 0x08, 0xb8, 0x9b, 0xb5, 0xdb, 0x47, 0x37, 0xa3, 0xe4, 0x22, 0xec, 0xa8, \
0x02, 0xcf, 0x5d, 0xc8, 0xc3, 0x35, 0x94, 0xd6, 0x4f, 0xeb, 0x1f, 0x2d, 0xce, 0x17, 0xf7, \
0x2e, 0x65, 0x85, 0xce, 0x73, 0x70, 0xbb, 0x4c, 0xbc, 0x65, 0x2a, 0xd9, 0x97, 0xc5, 0x80, \
0x43, 0xc3, 0x86, 0xec, 0x76, 0x62, 0xc0, 0xfc, 0x81, 0x98, 0x76, 0x71, 0x38, 0x89, 0x55, \
0x4b, 0x19, 0x7b, 0x48, 0x92, 0xcf, 0xdc, 0x4f };

// 私钥指数
const unsigned char PRIVATE_EXPONENT_HEX[] =
{ 0xa0, 0xc6, 0x7b, 0x6d, 0xf1, 0xf2, 0x57, 0xdc, 0x13, 0x23, 0x4d, 0x22, 0xa8, 0x65, 0x86, \
0x6a, 0x4d, 0x42, 0x28, 0xb7, 0xc4, 0x4c, 0x7a, 0x65, 0xe1, 0x85, 0x7b, 0x2f, 0xc5, 0xd5, \
0x15, 0x57, 0xbf, 0xb1, 0x7f, 0xce, 0xb3, 0x9e, 0x2b, 0x55, 0x9c, 0x8a, 0x18, 0x6b, 0x62, \
0x93, 0x73, 0xee, 0x51, 0x39, 0xe4, 0x4c, 0x15, 0x43, 0x69, 0xae, 0x31, 0xfa, 0x66, 0xe4, \
0x2a, 0x2d, 0x25, 0x38, 0x17, 0xd0, 0x87, 0x73, 0x18, 0xb0, 0x45, 0xb3, 0xdb, 0x52, 0x5e, \
0x78, 0xf9, 0x39, 0x94, 0x60, 0x84, 0x5f, 0xd3, 0x02, 0x18, 0x08, 0xfd, 0x62, 0xf8, 0x7c, \
0x5e, 0xaa, 0xac, 0x5b, 0xb9, 0x98, 0xdd, 0xb5, 0x5f, 0xfe, 0x71, 0x45, 0x16, 0x20, 0x13, \
0xd3, 0x51, 0x19, 0x6b, 0x84, 0x32, 0x8c, 0x07, 0xc0, 0x18, 0x60, 0x48, 0xee, 0xfd, 0xc5, \
0xc8, 0xa8, 0x13, 0x3b, 0x92, 0xc6, 0xbe, 0x81 };

//const unsigned char MODULES_HEX[] =
//{ 0xD7, 0x42, 0xCC, 0x97, 0x4D, 0x35, 0x1A, 0x8F, 0xB3, 0xAA, 0x42, 0xAA, 0x6D, 0x10, 0xEB, \
// 0x09, 0x58, 0xFA, 0xD2, 0xFB, 0x21, 0x0C, 0xDB, 0xBA, 0xB7, 0x22, 0x45, 0xE0, 0xF8, 0x1F, \
// 0x40, 0x26, 0xFD, 0x00, 0xAF, 0x83, 0x1B, 0x5C, 0xE5, 0x68, 0x7B, 0x3F, 0x81, 0x21, 0x9E, \
// 0xB4, 0x6B, 0x91, 0xCB, 0x5F, 0x2F, 0x6F, 0x18, 0xA6, 0x4B, 0xA0, 0x83, 0x33, 0x41, 0x7A, \
// 0x75, 0xE3, 0x4B, 0xF1, 0x23, 0xCC, 0xA5, 0x76, 0xD0, 0x58, 0x8F, 0x87, 0xE6, 0x4C, 0x66, \
// 0xB7, 0x83, 0x29, 0x16, 0xAE, 0x95, 0xE3, 0x76, 0x40, 0x0D, 0x54, 0xB8, 0x87, 0x0E, 0x8D, \
// 0x66, 0x0E, 0x0E, 0x1D, 0xC4, 0x16, 0xFD, 0x4F, 0xFA, 0xC4, 0xB9, 0x89, 0x5D, 0x01, 0x2D, \
// 0x86, 0x25, 0x44, 0x4B, 0x61, 0x31, 0xE2, 0xBD, 0x9A, 0xCD, 0x58, 0xE6, 0x6A, 0x94, 0xEC, \
// 0x94, 0x77, 0x64, 0x50, 0x8C, 0x04, 0xE8, 0x3F };
//
//const unsigned char PRIVATE_EXPONENT_HEX[] =
// { 0x68, 0x4D, 0x32, 0xAA, 0xE1, 0x3B, 0x28, 0xEA, 0x96, 0x48, 0x9A, 0x52, 0xCF, 0xD4, 0x11, \
// 0xBE, 0x8E, 0xC1, 0xC2, 0x36, 0xF2, 0x95, 0xB3, 0x66, 0x2E, 0x54, 0x49, 0xFD, 0xAE, 0xDC, \
// 0x1D, 0x8E, 0x86, 0xAA, 0xAD, 0x60, 0x5E, 0x82, 0xCD, 0x99, 0xA9, 0x96, 0x64, 0xB0, 0x70, \
// 0xA0, 0xC5, 0x3A, 0x78, 0x8B, 0x5F, 0x85, 0x7A, 0x31, 0x21, 0x95, 0xDD, 0xDC, 0x99, 0x0E, \
// 0x88, 0x4E, 0xA1, 0x3D, 0x8B, 0xF8, 0x58, 0xA1, 0x7C, 0xE8, 0x8C, 0x37, 0xE1, 0x1D, 0x59, \
// 0x76, 0x81, 0x48, 0xFC, 0xF0, 0x1C, 0x37, 0x5A, 0x39, 0x23, 0x05, 0xAB, 0xC1, 0x75, 0xC8, \
// 0x7F, 0x7A, 0xA6, 0xB9, 0x25, 0x9D, 0x36, 0xE7, 0x9E, 0xC5, 0xCE, 0x32, 0x45, 0x34, 0xE2, \
// 0xEC, 0xDF, 0xB1, 0xD1, 0x4D, 0xC9, 0x31, 0x55, 0xBA, 0x14, 0xB1, 0xD1, 0x09, 0x22, 0x69, \
// 0xCF, 0x09, 0xB9, 0xF6, 0xB6, 0x68, 0xA1, 0x49 };

#define RSA_KEY_LENGTH 1024
static const char rnd_seed[] = "string to make the random number generator initialized";
class QTpRsaCrypto
{
public:
	QTpRsaCrypto();
	~QTpRsaCrypto();

	// generate keys, usually no need to call it.
	int generate_key_str();

	// init params
	int set_params(const unsigned char *pub_expd = PUBLIC_EXPONENT_HEX, int pub_expd_len = 3,
        const unsigned char *pri_expd = PRIVATE_EXPONENT_HEX, int pri_expd_len = 128,
		const unsigned char *module = MODULES_HEX, int module_len = 128);

	// open keys
	int open_prikey_pubkey();
	int open_prikey();
	int open_pubkey();

	// private key to encryption and public key to decryption
	int prikey_encrypt(const unsigned char *in, int in_len,
		unsigned char **out, int &out_len);
	int pubkey_decrypt(const unsigned char *in, int in_len,
		unsigned char **out, int &out_len);
	// public key to encryption and private key to decryption
	int pubkey_encrypt(const unsigned char *in, int in_len,
		unsigned char **out, int &out_len);
	int prikey_decrypt(const unsigned char *in, int in_len,
		unsigned char **out, int &out_len);

	int close_key();
protected:
	void free_res();

private:
	RSA *_pub_key;
	RSA *_pri_key;

	unsigned char *_pub_expd;
	unsigned char *_pri_expd;
	unsigned char *_module;

	int _pub_expd_len;
	int _pri_expd_len;
	int _module_len;
};

#endif // QTPRSACRYPTO_H