cipher.cpp

之前看書參考試著自己寫 但沒成功 請網上較強的大哥試著修改一下 謝啦

#include "stdafx.h"
#include "Cipher.h"											//Different



											//Different


//Has been changed

int 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}
};


int 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}
};

int Cipher_key[4][4]={
	{0x2b,0x28,0xab,0x09},
	{0x7e,0xae,0xf7,0xcf},
	{0x15,0xd2,0x15,0x4f},
	{0x16,0xa6,0x88,0x3c}
};

int rcon[4][10]={
	{0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80,0x1b,0x36},
	{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
	{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
	{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00},
};

static int AES_roundkey[4][44];											//Different

int Inv_AES_refer(int reference)											//Different
{
	int x=reference/16;
	int y=reference%16;
	return Inv_SBOX[x][y];
}

int AES_refer(int reference)											//Different
{
	int x=reference/16;
	int y=reference%16;
	return SBOX[x][y];
}


int Cipher_key_refer(int reference)
{
	int x=reference/4;
	int y=reference%4;
	return Cipher_key[x][y];
}

void countround()
{
	int i=0;
	int j=0;
	int temp1[4];
	for(j=0;j<4;j++)
		for(i=0;i<4;i++)
			AES_roundkey[i][j]=Cipher_key[i][j];
	for(j=4;j<44;j++)
	{
		if(j%4==0)
		{
			for(i=0;i<4;i++)
			{
				if(i==0)
				{
					temp1[3]=AES_roundkey[i][j-1];
					temp1[3]=AES_refer(temp1[3]);											//Different
				}
				else
				{
					temp1[i-1]=AES_roundkey[i][j-1];
					temp1[i-1]=AES_refer(temp1[i-1]);											//Different
				}
			}
			for(i=0;i<4;i++)
			{
				AES_roundkey[i][j]=temp1[i]^AES_roundkey[i][j-4]^rcon[i][(j-4)/4];
			}
		}
		else
		{
			for(i=0;i<4;i++)
			{
				AES_roundkey[i][j]=AES_roundkey[i][j-1]^AES_roundkey[i][j-4];
			}
		}
	}
}


void Inv_countround()
{
	int i=0;
	int j=0;
	int temp1[4];
	for(j=0;j<4;j++)
		for(i=0;i<4;i++)
			AES_roundkey[i][j]=Cipher_key[i][j];
	for(j=4;j<44;j++)
	{
		if(j%4==0)
		{
			for(i=0;i<4;i++)
			{
				if(i==0)
				{
					temp1[3]=AES_roundkey[i][j-1];
					temp1[3]=Inv_AES_refer(temp1[3]);											//Different
				}
				else
				{
					temp1[i-1]=AES_roundkey[i][j-1];
					temp1[i-1]=Inv_AES_refer(temp1[i-1]);											//Different
				}
			}
			for(i=0;i<4;i++)
			{
				AES_roundkey[i][j]=temp1[i]^AES_roundkey[i][j-4]^rcon[i][(j-4)/4];
			}
		}
		else
		{
			for(i=0;i<4;i++)
			{
				AES_roundkey[i][j]=AES_roundkey[i][j-1]^AES_roundkey[i][j-4];
			}
		}
	}
}

void get_round_key(int round_key[4][4],int Round_count)
{
	int i,j;
	for(i=0;i<4;i++)
	{
		for(j=0;j<4;j++)
		{
			round_key[i][j]=AES_roundkey[i][j+4*Round_count];
		}
	}
}