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cpu_calc.cpp
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cpu_calc.cpp
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/**************************************/
/* You don't have to change this code */
/* Please modify the "gpu_calc.cu" */
/**************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "calculation.h"
/************************************************************/
/* FIPS 197 P.16 Figure 7 */
int Sbox[256] = {
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
};
/************************************************************/
/* FIPS 197 P.16 Figure 6 */
void SubBytes(int *state){
int i, j;
unsigned char *cb=(unsigned char*)state;
for(i=0; i<NBb; i+=4){
for(j=0; j<4; j++){
cb[i+j] = Sbox[cb[i+j]];
}
}
}
/************************************************************/
/* FIPS 197 P.17 Figure 8 */
void ShiftRows(int *state){
int i, j, i4;
unsigned char *cb = (unsigned char*)state;
unsigned char cw[NBb];
memcpy(cw, cb, sizeof(cw));
for(i = 0;i < NB; i+=4){
i4 = i*4;
for(j = 1; j < 4; j++){
cw[i4+j+0*4] = cb[i4+j+((j+0)&3)*4];
cw[i4+j+1*4] = cb[i4+j+((j+1)&3)*4];
cw[i4+j+2*4] = cb[i4+j+((j+2)&3)*4];
cw[i4+j+3*4] = cb[i4+j+((j+3)&3)*4];
}
}
memcpy(cb,cw,sizeof(cw));
}
/************************************************************/
/* FIPS 197 P.10 4.2 Multiplication (n-foled) */
int mul(int dt,int n){
int i, x = 0;
for(i = 8; i > 0; i >>= 1)
{
x <<= 1;
if(x & 0x100)
x = (x ^ 0x1b) & 0xff;
if((n & i))
x ^= dt;
}
return(x);
}
/************************************************************/
int dataget(void* data, int n){
return(((unsigned char*)data)[n]);
}
/************************************************************/
/* FIPS 197 P.18 Figure 9 */
void MixColumns(int *state){
int i, i4, x;
for(i = 0; i< NB; i++){
i4 = i*4;
x = mul(dataget(state,i4+0),2) ^
mul(dataget(state,i4+1),3) ^
mul(dataget(state,i4+2),1) ^
mul(dataget(state,i4+3),1);
x |= (mul(dataget(state,i4+1),2) ^
mul(dataget(state,i4+2),3) ^
mul(dataget(state,i4+3),1) ^
mul(dataget(state,i4+0),1)) << 8;
x |= (mul(dataget(state,i4+2),2) ^
mul(dataget(state,i4+3),3) ^
mul(dataget(state,i4+0),1) ^
mul(dataget(state,i4+1),1)) << 16;
x |= (mul(dataget(state,i4+3),2) ^
mul(dataget(state,i4+0),3) ^
mul(dataget(state,i4+1),1) ^
mul(dataget(state,i4+2),1)) << 24;
state[i] = x;
}
}
/************************************************************/
/* FIPS 197 P.19 Figure 10 */
void AddRoundKey(int *state, int *w, int n){
int i;
for(i = 0; i < NB; i++){
state[i] ^= w[i+NB*n];
}
}
/************************************************************/
/* FIPS 197 P.15 Figure 5 */ //暗号化
void Cipher(int *state, int *rkey, int i){
int rnd;
AddRoundKey(state, rkey, 0);
for(rnd = 1; rnd < NR; rnd++){
SubBytes(state);
ShiftRows(state);
MixColumns(state);
AddRoundKey(state, rkey, rnd);
}
SubBytes(state);
ShiftRows(state);
AddRoundKey(state, rkey, rnd);
return;
}
/************************************************************/
/* FIPS 197 P.20 Figure 11 */ /* FIPS 197 P.19 5.2 */
int SubWord(int in){
int inw = in;
unsigned char *cin=(unsigned char*)&inw;
cin[0] = Sbox[cin[0]];
cin[1] = Sbox[cin[1]];
cin[2] = Sbox[cin[2]];
cin[3] = Sbox[cin[3]];
return(inw);
}
/************************************************************/
/* FIPS 197 P.20 Figure 11 */ /* FIPS 197 P.19 5.2 */
int RotWord(int in){
int inw=in, inw2=0;
unsigned char *cin = (unsigned char*)&inw;
unsigned char *cin2 = (unsigned char*)&inw2;
cin2[0] = cin[1];
cin2[1] = cin[2];
cin2[2] = cin[3];
cin2[3] = cin[0];
return(inw2);
}
/************************************************************/
/* FIPS 197 P.20 Figure 11 */
void KeyExpansion(void *key, int *w){
/* FIPS 197 P.27 Appendix A.1 Rcon[i/NK] */ //又は mulを使用する
int Rcon[10] = {0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80,0x1b,0x36};
int i, temp;
memcpy(w, key, NK*4);
for(i = NK; i < NB*(NR+1); i++){
temp = w[i-1];
if((i%NK) == 0)
temp = SubWord(RotWord(temp)) ^ Rcon[(i/NK)-1];
else if(NK > 6 && (i%NK) == 4)
temp = SubWord(temp);
w[i] = w[i-NK] ^ temp;
}
}
/************************************************************/
void datadump(const char *c, void *dt, int len){
int i;
unsigned char *cdt = (unsigned char *)dt;
printf("%s", c);
for(i = 0; i < len*4;i++){
printf("%02x", cdt[i]);
}
printf("\n");
}
void launch_cpu_aes(unsigned char *pt, int *rk, unsigned char *ct, long int size){
int data[NB];
//"size / 16" means overall number of plaintexts.
for(int i = 0; i < (size / 16); i++){
memcpy(data, pt+16*i, NBb); //With NB, 16 bytes are defined as 4 words.
if(i == 6815744||i == 0){
printf("stateCPU0: 0x%x\n", data[0]);
printf("stateCPU1: 0x%x\n", data[1]);
printf("stateCPU2: 0x%x\n", data[2]);
printf("stateCPU3: 0x%x\n", data[3]);
}
//datadump("Plaintext : ", data, 4);
Cipher(data, rk, i);
if(i == 6815744||i == 0){
printf("stateCPU0: 0x%x\n", data[0]);
printf("stateCPU1: 0x%x\n", data[1]);
printf("stateCPU2: 0x%x\n", data[2]);
printf("stateCPU3: 0x%x\n", data[3]);
}
memcpy(ct+16*i, data, NBb);
//datadump("Ciphertext on CPU: ", ct+16*i, 4);
// printf("\n");
}
}