X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/Cipher_code.git/blobdiff_plain/4fa9c3d0a87911ef71653cb99aa1c70f633a9473..08c55649323e7739ce36df3e93189925e2fea4cd:/OneRoundIoT/openssl/openssl_evp.c

diff --git a/OneRoundIoT/openssl/openssl_evp.c b/OneRoundIoT/openssl/openssl_evp.c
index 3c1416f..fd4dd25 100644
--- a/OneRoundIoT/openssl/openssl_evp.c
+++ b/OneRoundIoT/openssl/openssl_evp.c
@@ -41,7 +41,7 @@ void handleErrors(void)
 
 
 int encrypt(unsigned char *plaintext, int plaintext_len, unsigned char *key,
-	    unsigned char *iv, unsigned char *ciphertext, int ctr)
+	    unsigned char *iv, unsigned char *ciphertext, int ctr, int index)
 {
   EVP_CIPHER_CTX *ctx;
 
@@ -60,10 +60,11 @@ int encrypt(unsigned char *plaintext, int plaintext_len, unsigned char *key,
 
   //256
   //avant ecb
-  if(ctr)
+  if(ctr) {
     if(1 != EVP_EncryptInit_ex(ctx, EVP_aes_128_ctr(), NULL, key, iv))
       handleErrors();
-    else
+  }
+  else
       if(1 != EVP_EncryptInit_ex(ctx, EVP_aes_128_cbc(), NULL, key, iv))
 	handleErrors();
 
@@ -75,14 +76,25 @@ int encrypt(unsigned char *plaintext, int plaintext_len, unsigned char *key,
    * EVP_EncryptUpdate can be called multiple times if necessary
    */
 
-  if(1 != EVP_EncryptUpdate(ctx, ciphertext, &len, plaintext, plaintext_len))
-    handleErrors();
-  ciphertext_len = len;
-
+/*
+  static double  time=0;
+  double t=0;
+  t=TimeStart();
+*/
+  for(int i=0;i<nb_test;i++)
+  {  
   
-
-
-
+    ciphertext_len = 0;
+    if(1 != EVP_EncryptUpdate(ctx, ciphertext, &len, plaintext, plaintext_len))
+      handleErrors();
+    ciphertext_len = len;
+    
+  }
+/*  time+=TimeStop(t);
+  // if(index==nb_test-1)
+  printf("Time encrypt %f\n",time);
+    
+*/
 
   
   /* Finalise the encryption. Further ciphertext bytes may be written at
@@ -98,7 +110,7 @@ int encrypt(unsigned char *plaintext, int plaintext_len, unsigned char *key,
 }
 
 int decrypt(unsigned char *ciphertext, int ciphertext_len, unsigned char *key,
-	    unsigned char *iv, unsigned char *plaintext, int ctr)
+	    unsigned char *iv, unsigned char *plaintext, int ctr, int index)
 {
   EVP_CIPHER_CTX *ctx;
 
@@ -118,10 +130,11 @@ int decrypt(unsigned char *ciphertext, int ciphertext_len, unsigned char *key,
   //256
 
   //avant => ecb
-  if(ctr)
+  if(ctr) {
     if(1 != EVP_DecryptInit_ex(ctx, EVP_aes_128_ctr(), NULL, key, iv))
       handleErrors();
-    else
+  }
+  else
       if(1 != EVP_DecryptInit_ex(ctx, EVP_aes_128_cbc(), NULL, key, iv))
     handleErrors();
 
@@ -129,17 +142,31 @@ int decrypt(unsigned char *ciphertext, int ciphertext_len, unsigned char *key,
    * EVP_DecryptUpdate can be called multiple times if necessary
    */
   
- 
-  if(1 != EVP_DecryptUpdate(ctx, plaintext, &len, ciphertext, ciphertext_len))
-    handleErrors();
-  plaintext_len = len;
+/*  static double time=0;
+  double t=0;
+  t=TimeStart();
+*/
+  for(int i=0;i<nb_test;i++)
+  {  
+    plaintext_len = 0;
+    if(1 != EVP_DecryptUpdate(ctx, plaintext, &len, ciphertext, ciphertext_len))
+      handleErrors();
+    plaintext_len = len;
+  }
+/*  time+=TimeStop(t);
+//  if(index==nb_test-1)
+    printf("Time decrypt %f\n",time);
+*/
 
+  
   /* Finalise the decryption. Further plaintext bytes may be written at
    * this stage.
    */
   if(1 != EVP_DecryptFinal_ex(ctx, plaintext + len, &len)) handleErrors();
   plaintext_len += len;
 
+  
+  
   /* Clean up */
   EVP_CIPHER_CTX_free(ctx);
 
@@ -153,15 +180,24 @@ int main (int argc, char** argv)
    * real application? :-)
    */
 
-   for(int i=1; i<argc; i++){
+  int size_buf=1;
+  int lena=0;
+
+   
+  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],"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("lena %d\n",lena);
+  printf("size_buf %d\n",size_buf);
+*/
+
 
-  
 
   
   /* A 256 bit key */
@@ -181,29 +217,48 @@ 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);
+  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("4096.ppm", &width, &height, &data_R, &data_G, &data_B);
-  int size=width*height*3;
+  }
+  else {
+    width=height=size_buf;
+    imsize=width*height;
+    buffer=malloc(imsize*sizeof(uchar));
+    for(int i=0;i<imsize;i++) {
+      buffer[i]=lrand48();
+    }
+  }
+  
 
-  int oneD=width*height;
-  uchar *plaintext = malloc(size);
 
-  
-  for(int i=0;i<oneD;i++) {
-    plaintext[i]=data_R[i];
-    plaintext[oneD+i]=data_G[i];
-    plaintext[2*oneD+i]=data_B[i];
+  int oneD=width*height;
+  uchar *plaintext = malloc(imsize);
+  if(lena) {
+    for(int i=0;i<oneD;i++) {
+      plaintext[i]=data_R[i];
+      plaintext[oneD+i]=data_G[i];
+      plaintext[2*oneD+i]=data_B[i];
+    }
+  }
+  else
+  {
+     for(int i=0;i<oneD;i++) {
+       plaintext[i]=buffer[i];
+    }
   }
 
   
 
-  uchar *ciphertext = malloc(size);
+  uchar *ciphertext = malloc(imsize);
 
   /* Buffer for the decrypted text */
-  uchar *decryptedtext = malloc(size);
+  uchar *decryptedtext = malloc(imsize);
 
   int decryptedtext_len, ciphertext_len;
 
@@ -212,7 +267,9 @@ int main (int argc, char** argv)
   OpenSSL_add_all_algorithms();
   OPENSSL_config(NULL);
 */
-   double time=0;
+
+
+  double time=0;
   double t=TimeStart();
 
   
@@ -221,48 +278,59 @@ int main (int argc, char** argv)
 
   int i;
 
-  for(i=0;i<nb_test;i++)
+//  for(i=0;i<nb_test;i++)
   {  
-    ciphertext_len = encrypt (plaintext, size, key, iv,
-			      ciphertext, ctr);
+    ciphertext_len = encrypt (plaintext, imsize, key, iv,
+			      ciphertext, ctr, i );
   }
 
  time+=TimeStop(t);
 
  printf("Time encrypt %f\n",time);
 
-
- for(int i=0;i<oneD;i++) {
-    data_R[i]=ciphertext[i];
-    data_G[i]=ciphertext[oneD+i];
-    data_B[i]=ciphertext[2*oneD+i];
-  }
-  store_RGB_pixmap("lena2.ppm", data_R, data_G, data_B, width, height);		   
+ if(lena) {
+   for(int i=0;i<oneD;i++) {
+     data_R[i]=ciphertext[i];
+     data_G[i]=ciphertext[oneD+i];
+     data_B[i]=ciphertext[2*oneD+i];
+   }
+   store_RGB_pixmap("lena2.ppm", data_R, data_G, data_B, width, height);
+ }
  
   
   time=0;
   t=0;
   t=TimeStart();
 
-  for(int i=0;i<nb_test;i++)
+  //for(int i=0;i<nb_test;i++)
   {  
     /* Decrypt the ciphertext */
     decryptedtext_len = decrypt(ciphertext, ciphertext_len, key, iv,
-				decryptedtext,ctr);
+				decryptedtext,ctr, i);
   }
 
  time+=TimeStop(t);
 
  printf("Time decrypt %f\n",time);
 
-
-  for(int i=0;i<oneD;i++) {
-    data_R[i]=decryptedtext[i];
-    data_G[i]=decryptedtext[oneD+i];
-    data_B[i]=decryptedtext[2*oneD+i];
-  }
-  store_RGB_pixmap("lena3.ppm", data_R, data_G, data_B, width, height);		    
-
+ if(lena) {
+   for(int i=0;i<oneD;i++) {
+     data_R[i]=decryptedtext[i];
+     data_G[i]=decryptedtext[oneD+i];
+     data_B[i]=decryptedtext[2*oneD+i];
+   }
+   store_RGB_pixmap("lena3.ppm", data_R, data_G, data_B, width, height);
+ }
+ else {
+   int equal=1;
+   for(int i=0;i<imsize;i++) {
+     //cout<<(int)buffer[i]<<endl;
+     if(buffer[i]!=decryptedtext[i]) {
+       equal=0;
+     }
+   }
+//   printf("RESULT CORRECT: %d\n",equal);
+ }
   
 
   /* Clean up */