//解密运算,inputSize必须为128,192,256位
void Decrypt(RijndaelContextPtr context,void* input)
{
int round;
//明文的最大长度
unsigned long state[8] = {0};
unsigned char* inputStringPtr = (unsigned char*)input;
unsigned int nb = context->nb;
state[0] = GETINT32(inputStringPtr,0,nb);
state[1] = GETINT32(inputStringPtr,1,nb);
state[2] = GETINT32(inputStringPtr,2,nb);
state[3] = GETINT32(inputStringPtr,3,nb);
if (nb >= (KeySize_192/4))
{
state[4] = GETINT32(inputStringPtr,4,nb);
state[5] = GETINT32(inputStringPtr,5,nb);
}
if (nb >= (KeySize_256/4))
{
state[6] = GETINT32(inputStringPtr,6,nb);
state[7] = GETINT32(inputStringPtr,7,nb);
}
InvAddRoundKey(context,context->nr,state);
InvShiftRow(context,state);
InvSubByte(context,state);
for (round = (context->nr-1); round > 0; round--)
{
InvAddRoundKey(context,round,state);
InvMixColumn(context,state);
InvShiftRow(context,state);
InvSubByte(context,state);
}
InvAddRoundKey(context,0,state);
StateToChars((unsigned char*)input,state,context->nb);
}
void dechiffrerBloc(unsigned char mat[TAILLEMATRICE][TAILLEMATRICE], unsigned char cleEtendue[TAILLEMATRICE*(NBROUND+1)][TAILLEMATRICE]){
int ligne, colonne, round;
// Traitement du bloc
//BLOC CHIFFRE------------------------------------------
printf("\n---------------------------------\n");
printf("\nBLOC CHIFFRE \n",round);
for (ligne=0; ligne<TAILLEMATRICE; ligne++){
for (colonne=0; colonne<TAILLEMATRICE; colonne++){
printf("0x%.2X\t" ,mat[colonne][ligne]);
}
printf("\n");
}
printf("\n");
//FIN BLOC CHIFFRE-----------------------------------
AddRoundKey(cleEtendue,NBROUND,mat);
/* //ADD ROUND KEY------------------------------------------
printf("ADD ROUND KEY [%d] \n",round);
for (ligne=0; ligne<TAILLEMATRICE; ligne++){
for (colonne=0; colonne<TAILLEMATRICE; colonne++){
printf("0x%.2X\t" ,mat[colonne][ligne]);
}
printf("\n");
}
printf("\n---------------------------------\n");
//FIN ADD ROUND KEY-----------------------------------*/
for(round=NBROUND-1; round>=0; round--){
InvShiftRow(mat);
/* //INV SHIFT ROW------------------------------------------
printf("SHIFT ROW [%d] \n",round);
for (ligne=0; ligne<TAILLEMATRICE; ligne++){
for (colonne=0; colonne<TAILLEMATRICE; colonne++){
printf("0x%.2X\t" ,mat[colonne][ligne]);
}
printf("\n");
}
printf("\n---------------------------------\n");
//INV SHIFT ROW-----------------------------------*/
InvSubBytes(mat);
/*//INV SUB BYTES------------------------------------------
printf("INV SUBBYTES[%d] \n",round);
for (ligne=0; ligne<TAILLEMATRICE; ligne++){
for (colonne=0; colonne<TAILLEMATRICE; colonne++){
printf("0x%.2X\t" ,mat[colonne][ligne]);
}
printf("\n");
}
printf("\n---------------------------------\n");
//INV SUBBYTES------------------------------------------*/
AddRoundKey(cleEtendue,round,mat);
/* //ADD ROUND KEY------------------------------------------
printf("ADD ROUND KEY [%d] \n",round);
for (ligne=0; ligne<TAILLEMATRICE; ligne++){
for (colonne=0; colonne<TAILLEMATRICE; colonne++){
printf("0x%.2X\t" ,mat[colonne][ligne]);
}
printf("\n");
}
printf("\n---------------------------------\n");
//FIN ADD ROUND KEY-----------------------------------*/
if(round!=(0))
{
InvMixColumns(mat);
/*//DEBUG INV MIXCOLUMNS------------------------------------------
printf("DEBUG INV MIXCOLUMNS [%d] \n",round);
for (ligne=0; ligne<TAILLEMATRICE; ligne++){
for (colonne=0; colonne<TAILLEMATRICE; colonne++){
printf("0x%.2X\t" ,mat[colonne][ligne]);
}
printf("\n");
}
printf("\n---------------------------------\n");
// FIN DEBUG INV MIXCOLUMNS---------------------------------------*/
}
}
//DEBUG MESSAGE CRYPTE EN HEXA------------------------------------------
printf("BLOC DECHIFRRE EN HEXA \n",round);
for (ligne=0; ligne<TAILLEMATRICE; ligne++){
for (colonne=0; colonne<TAILLEMATRICE; colonne++){
printf("0x%.2X\t" ,mat[colonne][ligne]);
}
printf("\n");
}
}
