AES.h

← разместить еще код

AES.h

Расшаренный код:

#ifndef _AES_H_
#define _AES_H_

#include<cstring>

using namespace std;

class AES
{
private:
	int Nb;
	int Nk;
	int Nr;

	unsigned int blockBytesLen;

	void SubBytes(unsigned char **state);

	void ShiftRow(unsigned char **state, int i, int n);    // shift row i on n positions

	void ShiftRows(unsigned char **state);

	unsigned char xtime(unsigned char b);    // multiply on x

	unsigned char mul_bytes(unsigned char a, unsigned char b);

	void MixColumns(unsigned char **state);

	void AddRoundKey(unsigned char **state, unsigned char *key);

	void SubWord(unsigned char *a);

	void RotWord(unsigned char *a);

	void XorWords(unsigned char *a, unsigned char *b, unsigned char *c);

	void Rcon(unsigned char * a, int n);

	void InvSubBytes(unsigned char **state);

	void InvMixColumns(unsigned char **state);

	void InvShiftRows(unsigned char **state);

	unsigned int PaddingNulls(unsigned char in[], unsigned int inLen);

	void KeyExpansion(unsigned char key[], unsigned char w[]);

	void EncryptBlock(unsigned char in[], unsigned char out[], unsigned  char key[]);

	void DecryptBlock(unsigned char in[], unsigned char out[], unsigned  char key[]);

	void XorBlocks(unsigned char *a, unsigned char * b, unsigned char *c, unsigned int len);

public:
	AES(int keyLen);

	unsigned char *EncryptECB(unsigned char in[], unsigned int inLen, unsigned  char key[], unsigned int &outLen);

	unsigned char *DecryptECB(unsigned char in[], unsigned int inLen, unsigned  char key[], unsigned int &outLen);

	unsigned char *EncryptCBC(unsigned char in[], unsigned int inLen, unsigned  char key[], unsigned char * iv, unsigned int &outLen);

	unsigned char *DecryptCBC(unsigned char in[], unsigned int inLen, unsigned  char key[], unsigned char * iv, unsigned int &outLen);

	unsigned char *EncryptCFB(unsigned char in[], unsigned int inLen, unsigned  char key[], unsigned char * iv, unsigned int &outLen);

	unsigned char *DecryptCFB(unsigned char in[], unsigned int inLen, unsigned  char key[], unsigned char * iv, unsigned int &outLen);


};

const unsigned char sbox[16][16] = {
		0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5,
		0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
		0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0,
		0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
		0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc,
		0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
		0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a,
		0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
		0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0,
		0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
		0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b,
		0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
		0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85,
		0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
		0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5,
		0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
		0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17,
		0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
		0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88,
		0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
		0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c,
		0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
		0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9,
		0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
		0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6,
		0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
		0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e,
		0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
		0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94,
		0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
		0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68,
		0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
};

const unsigned char inv_sbox[16][16] = {
		0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38,
		0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
		0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87,
		0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
		0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d,
		0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
		0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2,
		0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
		0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16,
		0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
		0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda,
		0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
		0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a,
		0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
		0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02,
		0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
		0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea,
		0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
		0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85,
		0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
		0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89,
		0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
		0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20,
		0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
		0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31,
		0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
		0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d,
		0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
		0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0,
		0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
		0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26,
		0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d, };

#endif