new

[Cipher_code.git] / OneRoundIoT / OneRound / one_round_new.cpp

diff --git a/OneRoundIoT/OneRound/one_round_new.cpp b/OneRoundIoT/OneRound/one_round_new.cpp
index de1b0d2c27589c814fddeb6c2e0ca8e56f3a0b42..1fe114c12aad36c0d4afc85a0d66a885ab31dd93 100644 (file)
--- a/OneRoundIoT/OneRound/one_round_new.cpp
+++ b/OneRoundIoT/OneRound/one_round_new.cpp
@@ -30,10 +30,10 @@ using namespace std;
 int key_size=256;
 int nb_test=1;
 int ctr=0;
 int key_size=256;
 int nb_test=1;
 int ctr=0;

-int h=64;

 
 
 
 

-int h2=h*h;
+
+

 
 
 
 
 
 


@@ -135,7 +135,7 @@ void prga(uchar *sc, int ldata, uchar *r) {
 
 
 
 
 
 

-
+template<int h2>

 void encrypt_ctr(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *PboxRM, uchar *Sbox1, uchar *Sbox2, int enc) {
 
 
 void encrypt_ctr(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *PboxRM, uchar *Sbox1, uchar *Sbox2, int enc) {
 
 


@@ -143,9 +143,9 @@ void encrypt_ctr(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, in
   uchar *fX=new uchar[h2];
   int ind1,ind2;
 
   uchar *fX=new uchar[h2];
   int ind1,ind2;
 

-
+  

    for(int a=0;a<h2;a++) {
    for(int a=0;a<h2;a++) {

-     X[a]=Sbox1[a];
+     X[a]=Sbox1[a&0xFF];           //Warning according to the size of h2, we can be outsize of Sbox1[a]

    }
 
    
    }
 
    


@@ -161,27 +161,69 @@ void encrypt_ctr(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, in
        
 
 
        
 
 

-    for(int a=0;a<h2;a++){
-      fX[a]=Sbox1[RM1[X[a]]];
+    /*for(int a=0;a<h2;a+=4){
+      fX[a]=RM1[X[a]];
+      fX[a+1]=RM1[X[a+1]];
+      fX[a+2]=RM1[X[a+2]];
+      fX[a+3]=RM1[X[a+3]];
+      }*/
+
+    for(int a=0;a<h2;a+=4){
+      fX[a]=X[a];
+      fX[a+1]=X[a+1];
+      fX[a+2]=X[a+2];
+      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;
+
+    /* if(it<513) {
+      for(int a=0;a<h2;a++)
+       printf("%d ",fX[a]);
+      printf("\n");
+      }*/

 
 

-    for(int a=0;a<h2;a++) {
+    for(int a=0;a<h2;a+=4) {

       fX[a]=fX[a]^RM1[a];
       fX[a]=fX[a]^RM1[a];

+      fX[a+1]=fX[a+1]^RM1[a+1];
+      fX[a+2]=fX[a+2]^RM1[a+2];
+      fX[a+3]=fX[a+3]^RM1[a+3];

     }
 
  
     }
 
  

-    for(int a=0;a<h2;a++) {
+    for(int a=0;a<h2;a+=4) {

       fX[a]=Sbox2[fX[a]];
       fX[a]=Sbox2[fX[a]];

+      fX[a+1]=Sbox2[fX[a+1]];
+      fX[a+2]=Sbox2[fX[a+2]];
+      fX[a+3]=Sbox2[fX[a+3]];

     }
     
     }
     

+     for(int a=0;a<h2;a+=4) {
+      fX[a]=fX[a]^seq_in[ind2+a];
+      fX[a+1]=fX[a+1]^seq_in[ind2+a+1];
+      fX[a+2]=fX[a+2]^seq_in[ind2+a+2];
+      fX[a+3]=fX[a+3]^seq_in[ind2+a+3];
+    }
+

  
  

-    for(int a=0;a<h2;a++) {
-      seq_out[ind1+a]=fX[a]^seq_in[ind2+a];
+    for(int a=0;a<h2;a+=4) {
+      seq_out[ind1+a]=fX[a];
+      seq_out[ind1+a+1]=fX[a+1];
+      seq_out[ind1+a+2]=fX[a+2];
+      seq_out[ind1+a+3]=fX[a+3];

     }
     
     }
     

-    for(int a=0;a<h2;a++) {
+    for(int a=0;a<h2;a+=4) {

       RM1[a]=RM1[PboxRM[a]];
       RM1[a]=RM1[PboxRM[a]];

+      RM1[a+1]=RM1[PboxRM[a+1]];
+      RM1[a+2]=RM1[PboxRM[a+2]];
+      RM1[a+3]=RM1[PboxRM[a+3]];

     }
 
 
     }
 
 


@@ -192,7 +234,7 @@ void encrypt_ctr(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, in
 }
 
 
 }
 
 

-
+template<int h2>

 void encrypt(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *PboxRM, uchar *Sbox1, uchar *Sbox2, int debug) {
 
 
 void encrypt(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *PboxRM, uchar *Sbox1, uchar *Sbox2, int debug) {
 
 


@@ -206,61 +248,42 @@ void encrypt(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *P
     int ind1=it*h2;
     int ind2=Pbox[it]*h2;
 
     int ind1=it*h2;
     int ind2=Pbox[it]*h2;
 

-    for(int a=0;a<h2;a+=1) {
+    for(int a=0;a<h2;a+=4) {

       X[a]=seq_in[ind2+a];
       X[a]=seq_in[ind2+a];

-/*      X[a+1]=seq_in[ind2+a+1];
+      X[a+1]=seq_in[ind2+a+1];

       X[a+2]=seq_in[ind2+a+2];
       X[a+3]=seq_in[ind2+a+3];
       X[a+2]=seq_in[ind2+a+2];
       X[a+3]=seq_in[ind2+a+3];

-      /*      X[a+4]=seq_in[ind2+a+4];                                                                                                                                    
-      X[a+5]=seq_in[ind2+a+5];                                                                                                                                            
-      X[a+6]=seq_in[ind2+a+6];                                                                                                                                            
-      X[a+7]=seq_in[ind2+a+7];*/

     }
 
     }
 

-    for(int a=0;a<h2;a+=1){
+    for(int a=0;a<h2;a+=4){

       fX[a]=Sbox1[X[a]];
       fX[a]=Sbox1[X[a]];

-/*      fX[a+1]=Sbox1[X[a+1]];
+      fX[a+1]=Sbox1[X[a+1]];

       fX[a+2]=Sbox1[X[a+2]];
       fX[a+3]=Sbox1[X[a+3]];
       fX[a+2]=Sbox1[X[a+2]];
       fX[a+3]=Sbox1[X[a+3]];

-      /*      fX[a+4]=Sbox1[X[a+4]];                                                                                                                                      
-      fX[a+5]=Sbox1[X[a+5]];                                                                                                                                              
-      fX[a+6]=Sbox1[X[a+6]];                                                                                                                                              
-      fX[a+7]=Sbox1[X[a+7]];*/

     }
 
 
     }
 
 

-    for(int a=0;a<h2;a+=1) {
+    for(int a=0;a<h2;a+=4) {

       fX[a]=fX[a]^RM1[a];
       fX[a]=fX[a]^RM1[a];

-/*      fX[a+1]=fX[a+1]^RM1[a+1];
+      fX[a+1]=fX[a+1]^RM1[a+1];

       fX[a+2]=fX[a+2]^RM1[a+2];
       fX[a+3]=fX[a+3]^RM1[a+3];
       fX[a+2]=fX[a+2]^RM1[a+2];
       fX[a+3]=fX[a+3]^RM1[a+3];

-      /*      fX[a+4]=fX[a+4]^RM1[a+4];                                                                                                                                   
-      fX[a+5]=fX[a+5]^RM1[a+5];                                                                                                                                           
-      fX[a+6]=fX[a+6]^RM1[a+6];                                                                                                                                           
-      fX[a+7]=fX[a+7]^RM1[a+7];*/

     }
 
 
     }
 
 

-    for(int a=0;a<h2;a+=1) {
+    for(int a=0;a<h2;a+=4) {

       seq_out[ind1+a]=Sbox2[fX[a]];
       seq_out[ind1+a]=Sbox2[fX[a]];

-/*      seq_out[ind1+a+1]=Sbox2[fX[a+1]];
+      seq_out[ind1+a+1]=Sbox2[fX[a+1]];

       seq_out[ind1+a+2]=Sbox2[fX[a+2]];
       seq_out[ind1+a+3]=Sbox2[fX[a+3]];
       seq_out[ind1+a+2]=Sbox2[fX[a+2]];
       seq_out[ind1+a+3]=Sbox2[fX[a+3]];

-      /*      seq_out[ind1+a+4]=Sbox2[fX[a+4]];                                                                                                                           
-      seq_out[ind1+a+5]=Sbox2[fX[a+5]];                                                                                                                                   
-      seq_out[ind1+a+6]=Sbox2[fX[a+6]];                                                                                                                                   
-      seq_out[ind1+a+7]=Sbox2[fX[a+7]];*/

     }
 
     }
 

-    for(int a=0;a<h2;a+=1) {
+    for(int a=0;a<h2;a+=4) {

       RM1[a]=RM1[PboxRM[a]];
       RM1[a]=RM1[PboxRM[a]];

-/*      RM1[a+1]=RM1[PboxRM[a+1]];
+      RM1[a+1]=RM1[PboxRM[a+1]];

       RM1[a+2]=RM1[PboxRM[a+2]];
       RM1[a+3]=RM1[PboxRM[a+3]];
       RM1[a+2]=RM1[PboxRM[a+2]];
       RM1[a+3]=RM1[PboxRM[a+3]];

-      /*      RM1[a+4]=RM1[PboxRM[a+4]];                                                                                                                                  
-      RM1[a+5]=RM1[PboxRM[a+5]];                                                                                                                                          
-      RM1[a+6]=RM1[PboxRM[a+6]];                                                                                                                                          
-      RM1[a+7]=RM1[PboxRM[a+7]];*/
+

     }
 
 
     }
 
 


@@ -272,7 +295,7 @@ void encrypt(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *P
 }
 
 
 }
 
 

-
+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) {
 
 
 void decrypt(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *PboxRM, uchar *Sbox1, uchar *Sbox2, int debug) {
 
 


@@ -296,22 +319,38 @@ void decrypt(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *P
 
 
 
 
 
 

-    for(int a=0;a<h2;a++) {
+    for(int a=0;a<h2;a+=4) {

       fX[a]=seq_in[ind1+a];
       fX[a]=seq_in[ind1+a];

+      fX[a+1]=seq_in[ind1+a+1];
+      fX[a+2]=seq_in[ind1+a+2];
+      fX[a+3]=seq_in[ind1+a+3];
+           

     }
     }

-    for(int a=0;a<h2;a++) {
+    for(int a=0;a<h2;a+=4) {

       fX[a]=Inv_Sbox2[fX[a]];
       fX[a]=Inv_Sbox2[fX[a]];

+      fX[a+1]=Inv_Sbox2[fX[a+1]];
+      fX[a+2]=Inv_Sbox2[fX[a+2]];
+      fX[a+3]=Inv_Sbox2[fX[a+3]];

     }
     }

-    for(int a=0;a<h2;a++) {
+    for(int a=0;a<h2;a+=4) {

       fX[a]=fX[a]^RM1[a];
       fX[a]=fX[a]^RM1[a];

+      fX[a+1]=fX[a+1]^RM1[a+1];
+      fX[a+2]=fX[a+2]^RM1[a+2];
+      fX[a+3]=fX[a+3]^RM1[a+3];

     }
 
     }
 

-    for(int a=0;a<h2;a++) {
+    for(int a=0;a<h2;a+=4) {

       RM1[a]=RM1[PboxRM[a]];
       RM1[a]=RM1[PboxRM[a]];

+      RM1[a+1]=RM1[PboxRM[a+1]];
+      RM1[a+2]=RM1[PboxRM[a+2]];
+      RM1[a+3]=RM1[PboxRM[a+3]];

     }
     
     }
     

-    for(int a=0;a<h2;a++) {
+    for(int a=0;a<h2;a+=4) {

       seq_out[ind2+a]=Inv_Sbox1[fX[a]];
       seq_out[ind2+a]=Inv_Sbox1[fX[a]];

+      seq_out[ind2+a+1]=Inv_Sbox1[fX[a+1]];
+      seq_out[ind2+a+2]=Inv_Sbox1[fX[a+2]];
+      seq_out[ind2+a+3]=Inv_Sbox1[fX[a+3]];

     }
 
      
     }
 
      


@@ -324,28 +363,28 @@ void decrypt(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *P
 int main(int argc, char** argv) {
 
 
 int main(int argc, char** argv) {
 
 

+  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
   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],"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("ctr %d\n",ctr);
   printf("h %d\n",h);
   }
 
   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);

 
 

-  h2=h*h;
+  int h2=h*h;

   
   

-/*
-  if(argc==2)
-    nb_test=atoi(argv[1]);
-  if(nb_test<=0 || nb_test>10000) {
-    printf("nb tests is not correct\n");
-    exit(0);
-  }
-  else
-    printf("nb tests = %d\n\n",nb_test);
-*/

 
       
   int seed=time(NULL);
 
       
   int seed=time(NULL);


@@ -370,23 +409,44 @@ int main(int argc, char** argv) {
 
   int width;
   int height;
 
   int width;
   int height;

+

   uchar *data_R, *data_G, *data_B;
   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);
 //  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;
   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];
+    }

   }
 
 
   }
 
 


@@ -465,53 +525,144 @@ int main(int argc, char** argv) {
   for(int i=0;i<h2;i++){
     RM2[i]=RM1[i];
   }
   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();
 
   int i;
   
  
  double time=0;
   double t=TimeStart();
 
   int i;

-  for(i=0;i<nb_test;i++)
-  {
-    if(ctr)
-      encrypt_ctr(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,1);
-    else
-      encrypt(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,0);
-
+  switch(h) {
+  case 4: 
+    for(i=0;i<nb_test;i++)
+    {
+      if(ctr)
+       encrypt_ctr<4*4>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,1);
+      else
+       encrypt<4*4>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,0);
+      
+    }
+    break;
+  case 8: 
+    for(i=0;i<nb_test;i++)
+    {
+      if(ctr)
+       encrypt_ctr<8*8>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,1);
+      else
+       encrypt<8*8>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,0);
+      
+    }
+    break;
+  case 16: 
+    for(i=0;i<nb_test;i++)
+    {
+      if(ctr)
+       encrypt_ctr<16*16>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,1);
+      else
+       encrypt<16*16>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,0);
+      
+    }
+    break;
+  case 32: 
+    for(i=0;i<nb_test;i++)
+    {
+      if(ctr)
+       encrypt_ctr<32*32>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,1);
+      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;

   }
   }

-  

   time+=TimeStop(t);
   cout<<"Time encrypt "<<time<<endl;
 
 
   time+=TimeStop(t);
   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;
   t=TimeStart();
   
 
   time=0;
   t=TimeStart();

-  for(i=0;i<nb_test;i++) {
-    if(ctr)
-      encrypt_ctr(seq2, seq,len,RM2,Pbox,PboxRM,Sbox1,Sbox2,0);
-    else
-      decrypt(seq2,seq,len,RM2,Pbox,PboxRM,Sbox1,Sbox2,0);
-
+  switch(h) {
+  case 4:
+    for(i=0;i<nb_test;i++) {
+      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);
+    }
+    break;
+  case 8:
+    for(i=0;i<nb_test;i++) {
+      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);
+    }
+    break;
+  case 16:
+    for(i=0;i<nb_test;i++) {
+      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);
+    }
+    break;
+  case 32:
+    for(i=0;i<nb_test;i++) {
+      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);
+    }
+    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,Sbox1,Sbox2,0);
+    }
+    break;

   }
 
   time+=TimeStop(t);
   cout<<"Time decrypt "<<time<<endl;
 
   }
 
   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++) {
+      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);