//==============================================================================
void ShiftRows(uint8_t *s, uint8_t direct) //Функция сдивига строк
{
uint8_t temp[8]; //Временные данные
uint8_t i , j; //Счетчики
uint8_t shfts[3][4]; //Матрица позиций сдвига
for(i=0;i<3;i++)
{
for(j=0;j<4;j++)
{
if(i==2 && j==3) shfts[i][j] = 4;
else shfts[i][j] = j;
}
}
for(i=0;i<4;i++)
{
for(j=0;j<Nb;j++) temp[j] = s[j*4+i];
shiftrow(temp , shfts[Nb/2-2][i] , direct);
for(j=0;j<Nb;j++) s[j*4+i] = temp[j];
}
}
void
MessageEncryption::encrypt(std::string imgpath,std::string outpath){
std::default_random_engine rand (this->key);
int currand; int i, j;
int width, height;
FILE* in, *out; gdImagePtr img;
printf("o\n");
int ext = getexten(imgpath);
printf("a\n");
in = fopen(imgpath.c_str(),"rb");
if(ext==0){
img=gdImageCreateFromJpeg(in);
} else if(ext==1){
img=gdImageCreateFromPng(in);
} else{
exit(1);
}
fclose(in);
printf("b\n");
width = gdImageSX(img); height = gdImageSY(img);
for(i=0;i<ITER_COUNT;i++){
currand = rand()%FLIP_CHANCE;
if(currand==0){ // flip horizontally
fliphoriz(img);
} else if(currand==1){ // flip vertically
flipvert(img);
} else if(currand<=1+FLIP_CHANCE/2){ // shift some rows
for(j=0;j<=(currand%(width/3));j++){
shiftcol(img,(3*i+j)%width,(7*currand+4*i)%height);
}
} else{ // shift some columns
for(j=0;j<=(currand%(height/3));j++){
shiftrow(img,(3*i+j)%height,(7*currand+4*i)%width);
}
}
}
printf("c\n");
ext = getexten(outpath);
out = fopen(outpath.c_str(),"wb");
if(ext==0){
gdImageJpeg(img,out,-1);
} else if(ext==1){
gdImagePng(img,out);
} else{
exit(1);
}
fclose(out); gdImageDestroy(img);
}
int main(){
int rounds, i, j, count, numberround, answer, rconround = 0, subbyteround = 0;;
char plaintext[17] = {'\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0'};
char key[17] = {'\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0'};
char index[16][3];
char indexkey[16][3];
char b[3], a[3];
printf("Input Text: ");
gets(plaintext);
printf("Input Key: ");
scanf(" %[^\n]s\n", key);
rounds = ceil(strlen(plaintext)/16);
for(i=0; i<16; i++){
sprintf(a, "%x", plaintext[i]); /* keep char ascii to hex base */
sprintf(b, "%x", key[i]);
strcpy(index[i], a);
strcpy(indexkey[i], b);
//printf("%x\n", index[i]);
//printf("%s\n", indexkey[i]);
}
for(i=0; i<16; i++){//we do add round key first before do 10 loop
//printf("%d\n", (((tonum(index[i][0]))*10)+(tonum(index[i][1]))));
answer = (((tonum(index[i][0]))*10)+(tonum(index[i][1])))^(((tonum(indexkey[i][0]))*10)+(tonum(indexkey[i][1])));
printf("%d\n", answer);
sprintf(a, "%x", answer);
printf("%s\n", a);
strcpy(index[i], a);
//printf("%s\n", index[i]);
}
for(numberround=1; numberround<=10; numberround++){
printf("%d %d\n", rconround,subbyteround);
if(numberround==1){
sub_byte_key(indexkey);
roundkey(matrixkey, rconround);
}
else{
roundkey(matrixkey, rconround);
}
sub_byte(index, subbyteround);
printf("roundkey:\n");
for(i=0; i<4; i++){
for(j=0; j<4; j++){
printf("%x ", matrixkey[i][j]);
}
printf("\n");
}
printf("-------------------------------------------\n");
printf("Subbyte:\n");
for(i=0; i<4; i++){
for(j=0; j<4; j++){
printf("%x ", matrix[i][j]);
}
printf("\n");
}
printf("-------------------------------------------\n");
shiftrow();
printf("shiftrow value:\n");
for(i=0; i<4; i++){
for(j=0; j<4; j++){
printf("%x ", matrix[i][j]);
}
printf("\n");
}
printf("-------------------------------------------\n");
if(numberround<10){
mixcolumn();
printf("mixcolumn value:\n");
for(i=0; i<4; i++){
for(j=0; j<4; j++){
printf("%x ", matrix[i][j]);
}
printf("\n");
}
}
printf("-------------------------------------------\n");
addroundkey();
printf("Addroundkey value:\n");
for(i=0; i<4; i++){
for(j=0; j<4; j++){
printf("%c", matrix[j][i]);
}
//printf("\n");
}
printf("\n");
subbyteround++;
rconround++;
}
}
int main(){
int rounds, i, j, count, numberround;
char plaintext[17] = {'\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0'};
char key[17] = {'\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0'};
char index[16][3];
char indexkey[16][3];
char b[3], a[3];
printf("Input Text: ");
gets(plaintext);
printf("Input Key: ");
scanf(" %[^\n]s\n", key);
rounds = ceil(strlen(plaintext)/16);
for(i=0; i<16; i++){
sprintf(a, "%x", plaintext[i]); /* keep char ascii to hex base */
sprintf(b, "%x", key[i]);
strcpy(index[i], a);
strcpy(indexkey[i], b);
}
for(numberround=1; numberround<=10; numberround++){
if(numberround==1){
sub_byte_key(indexkey);
roundkey(matrixkey);
}
else{
roundkey(matrixkey);
}
sub_byte(index);
printf("roundkey:\n");
for(i=0; i<4; i++){
for(j=0; j<4; j++){
printf("%x ", matrixkey[i][j]);
}
printf("\n");
}
printf("-------------------------------------------\n");
printf("Subbyte:\n");
for(i=0; i<4; i++){
for(j=0; j<4; j++){
printf("%x ", matrix[i][j]);
}
printf("\n");
}
printf("-------------------------------------------\n");
shiftrow();
printf("shiftrow value:\n");
for(i=0; i<4; i++){
for(j=0; j<4; j++){
printf("%x ", matrix[i][j]);
}
printf("\n");
}
printf("-------------------------------------------\n");
if(numberround<10){
mixcolumn();
printf("mixcolumn value:\n");
for(i=0; i<4; i++){
for(j=0; j<4; j++){
printf("%x ", matrix[i][j]);
}
printf("\n");
}
}
printf("-------------------------------------------\n");
addroundkey();
printf("Addroundkey value:\n");
for(i=0; i<4; i++){
for(j=0; j<4; j++){
printf("%c", cipher[i][j]);
}
}
printf("\n");
}
/*
for(i=0; i<16; i++){
sprintf(a, "%x", plaintext[i]); //keep char ascii to hex base
sprintf(b, "%x", key[i]);
strcpy(index[i], a);
strcpy(indexkey[i], b);
}
roundkey(indexkey);
sub_byte(index);
printf("matrixkey:\n");
for(i=0; i<4; i++){
for(j=0; j<4; j++){
printf("%x ", matrixkey[i][j]);
}
printf("\n");
}
printf("-------------------------------------------\n");
printf("matrix:\n");
for(i=0; i<4; i++){
for(j=0; j<4; j++){
printf("%x ", matrix[i][j]);
}
printf("\n");
}
printf("-------------------------------------------\n");
shiftrow();
printf("shiftrow value:\n");
for(i=0; i<4; i++){
for(j=0; j<4; j++){
printf("%x ", matrix[i][j]);
}
printf("\n");
}
printf("-------------------------------------------\n");
mixcolumn();
printf("mixcolumn value:\n");
for(i=0; i<4; i++){
for(j=0; j<4; j++){
printf("%x ", matrix[i][j]);
}
printf("\n");
}
printf("-------------------------------------------\n");
addroundkey();
printf("Addroundkey value:\n");
for(i=0; i<4; i++){
for(j=0; j<4; j++){
printf("%x ", matrix[i][j]);
}
printf("\n");
}
*/
}
