uchar j0=0;
for (int it=0; it<ldata; it++) {
- i0 = ((i0+1)%255);
+ i0 = ((i0+1)&0xFE); //%255);
j0 = (j0 + sc[i0])&0xFF;
uchar tmp = sc[i0];
sc[i0] = sc[j0];
void encrypt_ctr(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *PboxRM, uchar *Sbox1, uchar *Sbox2, int enc) {
- uchar *X=new uchar[h2];
- uchar *fX=new uchar[h2];
+// uchar *X=new uchar[h2];
+// uchar *fX=new uchar[h2];
+ uchar X[h2];
+ uchar fX[h2];
+
int ind1,ind2;
fX[a+3]=X[a+3];
}
- /* if(it<513) {
- for(int a=0;a<h2;a++)
- printf("%d ",fX[a]);
- printf("\n");
- }*/
+
- *(int*)&fX[0]=it;
+ *(int*)&fX[0]^=it;
- /* if(it<513) {
- for(int a=0;a<h2;a++)
- printf("%d ",fX[a]);
- printf("\n");
- }*/
+
+/* for(int a=0;a<h2;a+=16) {
+ *(int*)&fX[a]^=it;
+ *(int*)&fX[a+4]^=it;
+ *(int*)&fX[a+8]^=it;
+ *(int*)&fX[a+12]^=it;
+ }
+*/
for(int a=0;a<h2;a+=4) {
fX[a]=fX[a]^RM1[a];
void encrypt(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *PboxRM, uchar *Sbox1, uchar *Sbox2, int debug) {
- uchar *X=new uchar[h2];
+/* uchar *X=new uchar[h2];
uchar *fX=new uchar[h2];
unsigned int *lX=(unsigned int*)X;
unsigned int *lseq_in=(unsigned int*)seq_in;
-
+*/
+ uchar X[h2];
+ uchar fX[h2];
+// unsigned int *lX=(unsigned int*)X;
+// unsigned int *lseq_in=(unsigned int*)seq_in;
+
for(int it=0;it<len;it++) {
int ind1=it*h2;
template<int h2>
-void decrypt(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *PboxRM, uchar *Sbox1, uchar *Sbox2, int debug) {
-
-
- uchar *fX=new uchar[h2];
+void decrypt(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *PboxRM, uchar *Inv_Sbox1, uchar *Inv_Sbox2, int debug) {
+ /*uchar *fX=new uchar[h2];
uchar *Inv_Sbox1=new uchar[256];
- inverse_tables(Sbox1,256,Inv_Sbox1);
-
uchar *Inv_Sbox2=new uchar[256];
- inverse_tables(Sbox2,256,Inv_Sbox2);
-
+ */
+ uchar fX[h2];
int h=32;
+ int lena=0;
+ int size_buf=1;
+
+
for(int i=1; i<argc; i++){
if(strncmp(argv[i],"nb",2)==0) nb_test = atoi(&(argv[i][2])); //nb of test
if(strncmp(argv[i],"ctr",3)==0) ctr = atoi(&(argv[i][3])); //CTR ? 1 otherwise CBC like
- if(strncmp(argv[i],"h",1)==0) h = atoi(&(argv[i][1])); //CTR ? 1 otherwise CBC like
+ if(strncmp(argv[i],"h",1)==0) h = atoi(&(argv[i][1])); //size of block
+ if(strncmp(argv[i],"sizebuf",7)==0) size_buf = atoi(&(argv[i][7])); //SIZE of the buffer
+ if(strncmp(argv[i],"lena",4)==0) lena = atoi(&(argv[i][4])); //Use Lena or buffer
}
- printf("nb times %d\n",nb_test);
+/* printf("nb times %d\n",nb_test);
printf("ctr %d\n",ctr);
printf("h %d\n",h);
-
+ printf("lena %d\n",lena);
+ printf("size_buf %d\n",size_buf);
+*/
int h2=h*h;
int seed=time(NULL);
- cout<<seed<<endl;
+// cout<<seed<<endl;
srand48(seed);
uchar Secretkey[key_size];
int width;
int height;
+
uchar *data_R, *data_G, *data_B;
- load_RGB_pixmap("lena.ppm", &width, &height, &data_R, &data_G, &data_B);
+ int imsize;
+ uchar *buffer;
+
+ if(lena==1) {
+ load_RGB_pixmap("lena.ppm", &width, &height, &data_R, &data_G, &data_B);
+ imsize=width*height*3;
// load_RGB_pixmap("No_ecb_mode_picture.ppm", &width, &height, &data_R, &data_G, &data_B);
-
+ }
+ else {
+ width=height=size_buf;
+ imsize=width*height;
+ buffer=new uchar[imsize];
+ for(int i=0;i<imsize;i++) {
+ buffer[i]=lrand48();
+ }
+ }
- int imsize=width*height*3;
+
uchar* seq= new uchar[imsize];
uchar* seq2= new uchar[imsize];
int oneD=width*height;
- for(int i=0;i<oneD;i++) {
- seq[i]=data_R[i];
- seq[oneD+i]=data_G[i];
- seq[2*oneD+i]=data_B[i];
+ if(lena) {
+ for(int i=0;i<oneD;i++) {
+ seq[i]=data_R[i];
+ seq[oneD+i]=data_G[i];
+ seq[2*oneD+i]=data_B[i];
+ }
+ }
+ else {
+ for(int i=0;i<oneD;i++) {
+ seq[i]=buffer[i];
+ }
}
}
- cout<<"hash "<<endl;
+// cout<<"hash "<<endl;
for (int i = 0; i < 64 ; i++) {
// DK[i]=digest[i];
DK[i]=mix[i];
-
+ int *Pbox=new int[len];
+ int *PboxRM=new int[h2];
uchar Sbox1[256];
- rc4key(DK, Sbox1, 16);
+ uchar Sbox2[256];
+ uchar Inv_Sbox1[256];
+ uchar Inv_Sbox2[256];
+ uchar sc[256];
+ uchar RM1[h2];
+ uchar RM2[h2];
+
- uchar Sbox2[256];
- rc4key(&DK[16], Sbox2, 16);
+ double time=0;
+ double t=TimeStart();
+ rc4key(DK, Sbox1, 8);
+
- uchar sc[256];
- rc4key(&DK[32], sc, 16);
+ rc4key(&DK[8], Sbox2, 8);
- uchar outd[2*(h * h)];
- prga(sc, 2*(h * h), outd);
+ rc4key(&DK[16], sc, 16);
+
+
+ prga(sc, h2, RM1);
+
+
+ rc4keyperm(&DK[32], len, rp, Pbox, 16);
+
+
+ rc4keyperm(&DK[48], h2, rp, PboxRM, 16);
+
+ time+=TimeStop(t);
+ cout<<"Time initializaton "<<time<<endl;
+
- uchar RM1[h*h];
- uchar RM2[h*h];
- for(int i=0;i<h2;i++){
- RM1[i]=outd[i];
- RM2[i]=outd[i+h2];
- }
-
-
-
-
- uchar keyp[16];
- for (int i = 48; i < 64; i++)
- keyp[i-48] = DK[i];
-// cout<<len<<endl;
- int *Pbox=new int[len];
- int *PboxRM=new int[h2];
- rc4keyperm(keyp, len, rp, Pbox, 16);
- printf("len %d\n",len);
- for(int i=0;i<len;i++) {
-// printf("%d \n",Pbox[i]);
- }
-
- rc4keyperm(RM2, h2, rp, PboxRM, h2);
+
+
for(int i=0;i<h2;i++){
RM2[i]=RM1[i];
}
- int *Inv_Pbox=new int[len];
- inverse_tables_int(Pbox,len,Inv_Pbox);
+
-
- double time=0;
- double t=TimeStart();
+ inverse_tables(Sbox1,256,Inv_Sbox1);
+ inverse_tables(Sbox2,256,Inv_Sbox2);
+
+
+
+
+
+ time=0;
+ t=TimeStart();
int i;
switch(h) {
else
encrypt<32*32>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,0);
+ }
+ break;
+ case 64:
+ for(i=0;i<nb_test;i++)
+ {
+ if(ctr)
+ encrypt_ctr<64*64>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,1);
+ else
+ encrypt<64*64>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,0);
+
+ }
+ break;
+ case 128:
+ for(i=0;i<nb_test;i++)
+ {
+ if(ctr)
+ encrypt_ctr<128*128>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,1);
+ else
+ encrypt<128*128>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,0);
+
}
break;
}
cout<<"Time encrypt "<<time<<endl;
- for(int i=0;i<oneD;i++) {
- data_R[i]=seq2[i];
- data_G[i]=seq2[oneD+i];
- data_B[i]=seq2[2*oneD+i];
+ if(lena) {
+ for(int i=0;i<oneD;i++) {
+ data_R[i]=seq2[i];
+ data_G[i]=seq2[oneD+i];
+ data_B[i]=seq2[2*oneD+i];
+ }
+ store_RGB_pixmap("lena2.ppm", data_R, data_G, data_B, width, height);
}
- store_RGB_pixmap("lena2.ppm", data_R, data_G, data_B, width, height);
time=0;
if(ctr)
encrypt_ctr<4*4>(seq2, seq,len,RM2,Pbox,PboxRM,Sbox1,Sbox2,0);
else
- decrypt<4*4>(seq2,seq,len,RM2,Pbox,PboxRM,Sbox1,Sbox2,0);
+ decrypt<4*4>(seq2,seq,len,RM2,Pbox,PboxRM,Inv_Sbox1,Inv_Sbox2,0);
}
break;
case 8:
if(ctr)
encrypt_ctr<8*8>(seq2, seq,len,RM2,Pbox,PboxRM,Sbox1,Sbox2,0);
else
- decrypt<8*8>(seq2,seq,len,RM2,Pbox,PboxRM,Sbox1,Sbox2,0);
+ decrypt<8*8>(seq2,seq,len,RM2,Pbox,PboxRM,Inv_Sbox1,Inv_Sbox2,0);
}
break;
case 16:
if(ctr)
encrypt_ctr<16*16>(seq2, seq,len,RM2,Pbox,PboxRM,Sbox1,Sbox2,0);
else
- decrypt<16*16>(seq2,seq,len,RM2,Pbox,PboxRM,Sbox1,Sbox2,0);
+ decrypt<16*16>(seq2,seq,len,RM2,Pbox,PboxRM,Inv_Sbox1,Inv_Sbox2,0);
}
break;
case 32:
if(ctr)
encrypt_ctr<32*32>(seq2, seq,len,RM2,Pbox,PboxRM,Sbox1,Sbox2,0);
else
- decrypt<32*32>(seq2,seq,len,RM2,Pbox,PboxRM,Sbox1,Sbox2,0);
+ decrypt<32*32>(seq2,seq,len,RM2,Pbox,PboxRM,Inv_Sbox1,Inv_Sbox2,0);
+ }
+ break;
+ case 64:
+ for(i=0;i<nb_test;i++) {
+ if(ctr)
+ encrypt_ctr<64*64>(seq2, seq,len,RM2,Pbox,PboxRM,Sbox1,Sbox2,0);
+ else
+ decrypt<64*64>(seq2,seq,len,RM2,Pbox,PboxRM,Inv_Sbox1,Inv_Sbox2,0);
+ }
+ break;
+ case 128:
+ for(i=0;i<nb_test;i++) {
+ if(ctr)
+ encrypt_ctr<128*128>(seq2, seq,len,RM2,Pbox,PboxRM,Sbox1,Sbox2,0);
+ else
+ decrypt<128*128>(seq2,seq,len,RM2,Pbox,PboxRM,Inv_Sbox1,Inv_Sbox2,0);
}
break;
}
time+=TimeStop(t);
cout<<"Time decrypt "<<time<<endl;
-
- for(int i=0;i<oneD;i++) {
- data_R[i]=seq[i];
- data_G[i]=seq[oneD+i];
- data_B[i]=seq[2*oneD+i];
+ if(lena) {
+ for(int i=0;i<oneD;i++) {
+ data_R[i]=seq[i];
+ data_G[i]=seq[oneD+i];
+ data_B[i]=seq[2*oneD+i];
+ }
+ store_RGB_pixmap("lena3.ppm", data_R, data_G, data_B, width, height);
+ }
+ else {
+ bool equal=true;
+ for(int i=0;i<imsize;i++) {
+ //cout<<(int)buffer[i]<<endl;
+ if(buffer[i]!=seq[i]) {
+ equal=false;
+ }
+ }
+// cout<<"RESULT CORRECT: "<<equal<<endl;
}
- store_RGB_pixmap("lena3.ppm", data_R, data_G, data_B, width, height);
