X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/Cipher_code.git/blobdiff_plain/137f8adedb33df733dd981cb3d4b68bc6d1c9b33..b7c0a36f4ad9b2e1689ab484e36de6d44a560bdd:/OneRoundIoT/OneRound/one_round_new.cpp

diff --git a/OneRoundIoT/OneRound/one_round_new.cpp b/OneRoundIoT/OneRound/one_round_new.cpp
index 9046044..f0cafd6 100644
--- a/OneRoundIoT/OneRound/one_round_new.cpp
+++ b/OneRoundIoT/OneRound/one_round_new.cpp
@@ -9,6 +9,8 @@
 #include<string.h>
 #include <fstream>
 #include <sys/time.h>
+#include <glib.h>
+
 
 /*#include <cryptopp/hex.h>
 #include <cryptopp/sha.h>
@@ -30,10 +32,10 @@ using namespace std;
 int key_size=256;
 int nb_test=1;
 int ctr=0;
-const int h=32;
 
 
-const int h2=h*h;
+
+
 
 
 
@@ -59,6 +61,16 @@ double TimeStop(double t)
 
 
 
+uint xorshift32(const uint t)
+{
+  /* Algorithm "xor" from p. 4 of Marsaglia, "Xorshift RNGs" */
+  uint x = t;
+  x ^= x << 13;
+  x ^= x >> 17;
+  x ^= x << 5;
+  return x;
+}
+
 
 
 void inverse_tables(uchar *tab, int size_tab,uchar *inv_perm_tabs) {
@@ -123,7 +135,7 @@ void prga(uchar *sc, int ldata, uchar *r) {
   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];
@@ -136,19 +148,25 @@ void prga(uchar *sc, int ldata, uchar *r) {
 
 
 
-void encrypt_ctr(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *PboxRM, uchar *Sbox1, uchar *Sbox2, int enc) {
+template<int h2>
+void encrypt_ctr(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *PboxRM, uchar *Sbox1, uchar *Sbox2, uint myrand,int enc) {
 
+  
+  uchar X[h2];
+  uchar fX[h2];
 
-  uchar *X=new uchar[h2];
-  uchar *fX=new uchar[h2];
   int ind1,ind2;
 
   
-   for(int a=0;a<h2;a++) {
-     X[a]=Sbox2[a];
-   }
 
-   
+  for(int a=0;a<h2;a+=4) {
+    X[a]=Sbox1[a&0xFF];           //Warning according to the size of h2, we can be outsize of Sbox1[a]                                                          
+    X[a+1]=Sbox1[(a+1)&0xFF];
+    X[a+2]=Sbox1[(a+2)&0xFF];
+    X[a+3]=Sbox1[(a+3)&0xFF];
+  }
+
+
   for(int it=0;it<len;it++) {
     if(enc) {
       ind1=it*h2;
@@ -158,52 +176,56 @@ void encrypt_ctr(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, in
       ind2=it*h2;
       ind1=Pbox[it]*h2;
     }
-       
 
 
-    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) {
+
+      myrand=xorshift32(myrand);
+      uint mm=myrand;
+
+      X[a]=X[a]^(mm&255);
+      mm>>=8;
+      X[a+1]=X[a+1]^(mm&255);
+      mm>>=8;
+      X[a+2]=X[a+2]^(mm&255);
+      mm>>=8;
+      X[a+3]=X[a+3]^(mm&255);
     }
 
-    /*   if(it==0) {
-      for(int a=0;a<h2;a++)
-	printf("%d ",fX[a]);
-      printf("\n");
-      }*/
 
+
+
+    
     for(int a=0;a<h2;a+=4) {
-      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];
+      X[a]=Sbox1[X[a]];
+      X[a+1]=Sbox1[X[a+1]];
+      X[a+2]=Sbox1[X[a+2]];
+      X[a+3]=Sbox1[X[a+3]];
     }
 
- 
     for(int a=0;a<h2;a+=4) {
-      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]];
+      X[a]=X[a]^RM1[a];
+      X[a+1]=X[a+1]^RM1[a+1];
+      X[a+2]=X[a+2]^RM1[a+2];
+      X[a+3]=X[a+3]^RM1[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+=4) {
+      fX[a]=X[a]^seq_in[ind2+a];
+      fX[a+1]=X[a+1]^seq_in[ind2+a+1];
+      fX[a+2]=X[a+2]^seq_in[ind2+a+2];
+      fX[a+3]=X[a+3]^seq_in[ind2+a+3];
+
     }
 
- 
+
     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+=4) {
       RM1[a]=RM1[PboxRM[a]];
       RM1[a+1]=RM1[PboxRM[a+1]];
@@ -212,21 +234,18 @@ 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, uint myrand, int debug) {
 
-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 *fX=new uchar[h2];
-  unsigned int *lX=(unsigned int*)X;
-  unsigned int *lseq_in=(unsigned int*)seq_in;
+  uchar X[h2];
+  uchar fX[h2];
 
 
   for(int it=0;it<len;it++) {
@@ -234,10 +253,16 @@ void encrypt(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *P
     int ind2=Pbox[it]*h2;
 
     for(int a=0;a<h2;a+=4) {
-      X[a]=seq_in[ind2+a];
-      X[a+1]=seq_in[ind2+a+1];
-      X[a+2]=seq_in[ind2+a+2];
-      X[a+3]=seq_in[ind2+a+3];
+      myrand=xorshift32(myrand);
+
+      uint mm=myrand;
+      X[a]=seq_in[ind2+a]^(mm&255);
+      mm>>=8;
+      X[a+1]=seq_in[ind2+a+1]^(mm&255);
+      mm>>=8;
+      X[a+2]=seq_in[ind2+a+2]^(mm&255);
+      mm>>=8;
+      X[a+3]=seq_in[ind2+a+3]^(mm&255);
     }
 
     for(int a=0;a<h2;a+=4){
@@ -275,24 +300,25 @@ void encrypt(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *P
   }
 
 
+  
+
 
 
 }
 
 
 
-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];
 
 
-  uchar *Inv_Sbox1=new uchar[256];
-  inverse_tables(Sbox1,256,Inv_Sbox1);
 
-  uchar *Inv_Sbox2=new uchar[256];
-  inverse_tables(Sbox2,256,Inv_Sbox2);
-  
+template<int h2>
+void decrypt(uchar* seq_in, uchar *seq_out, int len, uchar* RM1, int *Pbox, int *PboxRM, uchar *Inv_Sbox1, uchar *Inv_Sbox2,  uint myrand, int debug) {
+
+
+
+ uchar fX[h2];
 
 
 
@@ -309,7 +335,7 @@ void decrypt(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *P
       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+=4) {
       fX[a]=Inv_Sbox2[fX[a]];
@@ -330,40 +356,57 @@ void decrypt(uchar* seq_in, uchar *seq_out, int len,uchar* RM1,int *Pbox, int *P
       RM1[a+2]=RM1[PboxRM[a+2]];
       RM1[a+3]=RM1[PboxRM[a+3]];
     }
-    
+
     for(int a=0;a<h2;a+=4) {
-      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]];
+      myrand=xorshift32(myrand);
+
+      uint mm=myrand;
+      seq_out[ind2+a]=Inv_Sbox1[fX[a]]^(mm&255);
+      mm>>=8;
+      seq_out[ind2+a+1]=Inv_Sbox1[fX[a+1]]^(mm&255);
+      mm>>=8;
+      seq_out[ind2+a+2]=Inv_Sbox1[fX[a+2]]^(mm&255);
+      mm>>=8;
+      seq_out[ind2+a+3]=Inv_Sbox1[fX[a+3]]^(mm&255);
     }
 
-     
+
   }
 
 
+
 }
 
 
 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
+    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);
-
-//  h2=h*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];
@@ -384,23 +427,49 @@ int main(int argc, char** argv) {
 
   int width;
   int height;
+
   uchar *data_R, *data_G, *data_B;
-  load_RGB_pixmap("lena.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);
+  int imsize;
+  uchar *buffer;
 
 
 
 
   
-  int imsize=width*height*3;
+  if(lena==1) {
+    load_RGB_pixmap("lena.ppm", &width, &height, &data_R, &data_G, &data_B);
+//    load_RGB_pixmap("8192.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();
+    }
+  }
+
+
+
+  
+  
   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];
+    }
   }
 
 
@@ -420,114 +489,250 @@ int main(int argc, char** argv) {
     
   for (int i = 0; i < 256 ; i++) {
     mix[i]=Secretkey[i]^counter[i];
+    
   }
+  gchar  *sha512;
+
+  sha512 = g_compute_checksum_for_string(G_CHECKSUM_SHA512, (const char*) mix, 256);
+//  g_print("%s\n", sha512);
+ 
+
+
+
+
+
+
 
   
-  cout<<"hash "<<endl;
+//  cout<<"hash "<<endl;
   for (int i = 0; i < 64 ; i++) {
 //    DK[i]=digest[i];
-    DK[i]=mix[i];
+    DK[i]=sha512[i];
   }
+  g_free(sha512);
 
 
-
-  
+  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 RM1_copy[h2];
+  uchar RMtmp[h2];
+
+
+  uint myrand=0;
 
-  uchar Sbox2[256];
-  rc4key(&DK[16], Sbox2, 16);
 
+  double time_encrypt=0;
+  double time_decrypt=0;
+  
 
+  double t=TimeStart();  
+  rc4key(DK, Sbox1, 8);
+  
+  
+  rc4key(&DK[8], Sbox2, 8);
+  
+  rc4key(&DK[16], sc, 16);
   
-  uchar sc[256];
-  rc4key(&DK[32], sc, 16);
   
-  uchar outd[2*(h * h)];
-  prga(sc, 2*(h * h), outd);
+  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];
+
+  myrand=0;
+  for(int i=0;i<32;i++) {
+    myrand|=DK[i]&1;
+    myrand<<=1;
   }
-	      
+  uint myrand_copy=myrand;
+
+ 
+
 
 
   
-    
+  for(int i=0;i<h2;i++){
+    RM1_copy[i]=RM1[i];
+  }
+
   
-  uchar keyp[16];
-  for (int i = 48; i < 64; i++)
-    keyp[i-48] = DK[i];
+  inverse_tables(Sbox1,256,Inv_Sbox1);
+  inverse_tables(Sbox2,256,Inv_Sbox2);
 
-//  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();
+  time_encrypt=0;
+  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,myrand,1);
+      else
+	encrypt<4*4>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,myrand,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,myrand,1);
+      else
+	encrypt<8*8>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,myrand,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,myrand,1);
+      else
+	encrypt<16*16>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,myrand,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,myrand,1);
+      else
+	encrypt<32*32>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,myrand,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,myrand,1);
+      else
+	encrypt<64*64>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,myrand,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,myrand,1);
+      else
+	encrypt<128*128>(seq, seq2,len,RM1,Pbox,PboxRM,Sbox1,Sbox2,myrand,0);
+      
+    }
+    break;
   }
-  
-  time+=TimeStop(t);
-  cout<<"Time encrypt "<<time<<endl;
+  time_encrypt+=TimeStop(t);
+  //cout<<"Time encrypt "<<
+  cout<<(double)imsize*nb_test/time_encrypt<<"\t";
 
 
-  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;
+  time_decrypt=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,RM1_copy,Pbox,PboxRM,Sbox1,Sbox2,myrand,0);
+      else
+	decrypt<4*4>(seq2,seq,len,RM1_copy,Pbox,PboxRM,Inv_Sbox1,Inv_Sbox2,myrand,0);
+    }
+    break;
+  case 8:
+    for(i=0;i<nb_test;i++) {
+      if(ctr)
+	encrypt_ctr<8*8>(seq2, seq,len,RM1_copy,Pbox,PboxRM,Sbox1,Sbox2,myrand,0);
+      else
+	decrypt<8*8>(seq2,seq,len,RM1_copy,Pbox,PboxRM,Inv_Sbox1,Inv_Sbox2,myrand,0);
+    }
+    break;
+  case 16:
+    for(i=0;i<nb_test;i++) {
+      if(ctr)
+	encrypt_ctr<16*16>(seq2, seq,len,RM1_copy,Pbox,PboxRM,Sbox1,Sbox2,myrand,0);
+      else
+	decrypt<16*16>(seq2,seq,len,RM1_copy,Pbox,PboxRM,Inv_Sbox1,Inv_Sbox2,myrand,0);
+    }
+    break;
+  case 32:
+    for(i=0;i<nb_test;i++) {
+      if(ctr)
+	encrypt_ctr<32*32>(seq2, seq,len,RM1_copy,Pbox,PboxRM,Sbox1,Sbox2,myrand,0);
+      else
+	decrypt<32*32>(seq2,seq,len,RM1_copy,Pbox,PboxRM,Inv_Sbox1,Inv_Sbox2,myrand,0);
+    }
+    break;
+  case 64:
+    for(i=0;i<nb_test;i++) {
+      if(ctr)
+	encrypt_ctr<64*64>(seq2, seq,len,RM1_copy,Pbox,PboxRM,Sbox1,Sbox2,myrand,0);
+      else
+	decrypt<64*64>(seq2,seq,len,RM1_copy,Pbox,PboxRM,Inv_Sbox1,Inv_Sbox2,myrand,0);
+    }
+    break;
+  case 128:
+    for(i=0;i<nb_test;i++) {
+      if(ctr)
+	encrypt_ctr<128*128>(seq2, seq,len,RM1_copy,Pbox,PboxRM,Sbox1,Sbox2,myrand,0);
+      else
+	decrypt<128*128>(seq2,seq,len,RM1_copy,Pbox,PboxRM,Inv_Sbox1,Inv_Sbox2,myrand,0);
+    }
+    break;
   }
 
-  time+=TimeStop(t);
-  cout<<"Time decrypt "<<time<<endl;
+  time_decrypt+=TimeStop(t);
+  //cout<<"Time decrypt "
+  cout<<(double)imsize*nb_test/time_decrypt<<"\t";
 
-  
-  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);