From: couturie <you@example.com>
Date: Sun, 15 Apr 2018 19:00:06 +0000 (+0200)
Subject: ccm qui bug
X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/Cipher_code.git/commitdiff_plain/d463aa6b004f2432356128d77de09592ae822611?ds=inline;hp=e8a8b4d9c7d32c2d90c0b8c1ac63f47c3959116a

ccm qui bug
---

diff --git a/OneRoundIoT/openssl/Makefile b/OneRoundIoT/openssl/Makefile
index b2f769e..5a8b638 100644
--- a/OneRoundIoT/openssl/Makefile
+++ b/OneRoundIoT/openssl/Makefile
@@ -1,7 +1,9 @@
 C=gcc
 CFLAGS= -I /usr/include/openssl/ -lcrypto -O3 -std=c99
 OBJ =    pixmap_io.o openssl_evp.o
-OBJ2 =    pixmap_io.o openssl_evp_cmac.o 
+OBJ2 =    pixmap_io.o openssl_evp_cmac.o
+OBJ3 =    pixmap_io.o openssl_evp_ccm.o
+OBJ4 =    pixmap_io.o aesccm.o 
 
 
 openssl_evp: $(OBJ)
@@ -10,10 +12,16 @@ openssl_evp: $(OBJ)
 openssl_evp_cmac: $(OBJ2)
 	$(C) -o $@ $^ $(CFLAGS)
 
+openssl_evp_ccm: $(OBJ3)
+	$(C) -o $@ $^ $(CFLAGS)
+
+aesccm: $(OBJ4)
+	$(C) -o $@ $^ $(CFLAGS)
+
 %.o: %.c 
 	$(C) -c -o $@ $< 
 
 
 clean:
-	rm -rf $(OBJ)  openssl_evp openssl_evp_cmac
+	rm -rf $(OBJ)  openssl_evp openssl_evp_cmac openssl_evp_ccm
  
diff --git a/OneRoundIoT/openssl/openssl_evp_ccm.c b/OneRoundIoT/openssl/openssl_evp_ccm.c
new file mode 100644
index 0000000..74549f8
--- /dev/null
+++ b/OneRoundIoT/openssl/openssl_evp_ccm.c
@@ -0,0 +1,507 @@
+//gcc pixmap_io.c  -c
+//gcc openssl_evp.c pixmap_io.o -o  openssl_evp -I /usr/include/openssl/ -lcrypto -O3 -std=c99 
+
+
+#include <openssl/conf.h>
+#include <openssl/evp.h>
+#include <openssl/err.h>
+#include <openssl/ssl.h>
+#include <openssl/bio.h>
+#include <string.h>
+#include <sys/time.h>
+#include "pixmap_io.h"
+
+typedef unsigned char   uchar;
+
+int nb_test=1;
+int ctr=0;
+
+
+
+
+
+double TimeStart()
+{
+  struct timeval tstart;
+  gettimeofday(&tstart,0);
+  return( (double) (tstart.tv_sec + tstart.tv_usec*1e-6) );
+}
+
+double TimeStop(double t)
+{
+  struct timeval tend;
+
+  gettimeofday(&tend,0);
+  t = (double) (tend.tv_sec + tend.tv_usec*1e-6) - t;
+  return (t);
+}
+
+
+void handleErrors(void)
+{
+  ERR_print_errors_fp(stderr);
+  abort();
+}
+
+
+int encryptccm(unsigned char *plaintext, int plaintext_len, unsigned char *aad,
+	int aad_len, unsigned char *key, unsigned char *iv,
+	unsigned char *ciphertext, unsigned char *tag)
+{
+	EVP_CIPHER_CTX *ctx;
+
+	int len;
+
+	int ciphertext_len;
+
+
+	/* Create and initialise the context */
+	if(!(ctx = EVP_CIPHER_CTX_new())) handleErrors();
+
+	/* Initialise the encryption operation. */
+	if(1 != EVP_EncryptInit_ex(ctx, EVP_aes_256_ccm(), NULL, NULL, NULL))
+		handleErrors();
+
+	/* Setting IV len to 7. Not strictly necessary as this is the default
+	 * but shown here for the purposes of this example */
+	if(1 != EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, 7, NULL))
+		handleErrors();
+
+	/* Set tag length */
+	EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, 16, NULL);
+
+	/* Initialise key and IV */
+	if(1 != EVP_EncryptInit_ex(ctx, NULL, NULL, key, iv)) handleErrors();
+
+	/* Provide the total plaintext length
+	 */
+	if(1 != EVP_EncryptUpdate(ctx, NULL, &len, NULL, plaintext_len))
+		handleErrors();
+
+	/* Provide any AAD data. This can be called zero or one times as
+	 * required
+	 */
+	if(1 != EVP_EncryptUpdate(ctx, NULL, &len, aad, aad_len))
+		handleErrors();
+
+	/* Provide the message to be encrypted, and obtain the encrypted output.
+	 * EVP_EncryptUpdate can only be called once for this
+	 */
+	if(1 != EVP_EncryptUpdate(ctx, ciphertext, &len, plaintext, plaintext_len))
+		handleErrors();
+	ciphertext_len = len;
+
+	/* Finalise the encryption. Normally ciphertext bytes may be written at
+	 * this stage, but this does not occur in CCM mode
+	 */
+	if(1 != EVP_EncryptFinal_ex(ctx, ciphertext + len, &len)) handleErrors();
+	ciphertext_len += len;
+
+	/* Get the tag */
+	if(1 != EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, 16, tag))
+		handleErrors();
+
+	/* Clean up */
+	EVP_CIPHER_CTX_free(ctx);
+
+	return ciphertext_len;
+}
+
+
+int decryptccm(unsigned char *ciphertext, int ciphertext_len, unsigned char *aad,
+	int aad_len, unsigned char *tag, unsigned char *key, unsigned char *iv,
+	unsigned char *plaintext)
+{
+	EVP_CIPHER_CTX *ctx;
+	int len;
+	int plaintext_len;
+	int ret;
+
+	/* Create and initialise the context */
+	if(!(ctx = EVP_CIPHER_CTX_new())) handleErrors();
+
+	/* Initialise the decryption operation. */
+	if(1 != EVP_DecryptInit_ex(ctx, EVP_aes_256_ccm(), NULL, NULL, NULL))
+		handleErrors();
+
+	/* Setting IV len to 7. Not strictly necessary as this is the default
+	 * but shown here for the purposes of this example */
+	if(1 != EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, 7, NULL))
+		handleErrors();
+
+ for(int i=0;i<16;i++) {
+    printf("%d ",tag[i]);
+  }
+  printf("\n");
+	
+	/* Set expected tag value. */
+	if(1 != EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, 16, tag))
+		handleErrors();
+ for(int i=0;i<16;i++) {
+    printf("%d ",tag[i]);
+  }
+  printf("\n");
+	/* Initialise key and IV */
+	if(1 != EVP_DecryptInit_ex(ctx, NULL, NULL, key, iv)) handleErrors();
+
+
+	/* Provide the total ciphertext length
+	 */
+	if(1 != EVP_DecryptUpdate(ctx, NULL, &len, NULL, ciphertext_len))
+		handleErrors();
+
+	/* Provide any AAD data. This can be called zero or more times as
+	 * required
+	 */
+	if(1 != EVP_DecryptUpdate(ctx, NULL, &len, aad, aad_len))
+		handleErrors();
+
+	/* Provide the message to be decrypted, and obtain the plaintext output.
+	 * EVP_DecryptUpdate can be called multiple times if necessary
+	 */
+	ret = EVP_DecryptUpdate(ctx, plaintext, &len, ciphertext, ciphertext_len);
+
+	printf("RET %d len %d\n",ret,len);
+	
+	plaintext_len = len;
+
+	/* Clean up */
+	EVP_CIPHER_CTX_free(ctx);
+
+	if(ret > 0)
+	{
+		/* Success */
+		return plaintext_len;
+	}
+	else
+	{
+		/* Verify failed */
+		return -1;
+	}
+}
+
+
+
+
+/* int encrypt(unsigned char *plaintext, int plaintext_len, unsigned char *key, */
+/* 	    unsigned char *iv, unsigned char *ciphertext, int ctr, int index) */
+/* { */
+/*   EVP_CIPHER_CTX *ctx; */
+
+/*   int len; */
+
+/*   int ciphertext_len; */
+
+/*   /\* Create and initialise the context *\/ */
+/*   if(!(ctx = EVP_CIPHER_CTX_new())) handleErrors(); */
+
+/*   /\* Initialise the encryption operation. IMPORTANT - ensure you use a key */
+/*    * and IV size appropriate for your cipher */
+/*    * In this example we are using 256 bit AES (i.e. a 256 bit key). The */
+/*    * IV size for *most* modes is the same as the block size. For AES this */
+/*    * is 128 bits *\/ */
+/*   //static double  time=0; */
+/*   //double t=0; */
+/*   //t=TimeStart(); */
+/*   //256 */
+/*   //avant ecb */
+/*   if(ctr) { */
+/*     if(1 != EVP_EncryptInit_ex(ctx, EVP_aes_128_ctr(), NULL, key, iv)) */
+/*       handleErrors(); */
+/*   } */
+/*   else */
+/*       if(1 != EVP_EncryptInit_ex(ctx, EVP_aes_128_cbc(), NULL, key, iv)) */
+/* 	handleErrors(); */
+
+/*   //time+=TimeStop(t); */
+/*   //printf("Time init %f\n",time); */
+
+  
+/* //  int cipherBlockSize = EVP_CIPHER_CTX_block_size(ctx);   */
+/* //  printf("INFO(evp_encrypt): block size: %d\n", cipherBlockSize); */
+
+  
+/*   /\* Provide the message to be encrypted, and obtain the encrypted output. */
+/*    * EVP_EncryptUpdate can be called multiple times if necessary */
+/*    *\/ */
+
+/* /\* */
+/*   static double  time=0; */
+/*   double t=0; */
+/*   t=TimeStart(); */
+/* *\/ */
+/*   for(int i=0;i<nb_test;i++) */
+/*   {   */
+  
+/*       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 */
+/*    * this stage. */
+/*    *\/ */
+/*   if(1 != EVP_EncryptFinal_ex(ctx, ciphertext + len, &len)) handleErrors(); */
+/*   ciphertext_len += len; */
+
+/*   /\* Clean up *\/ */
+/*   EVP_CIPHER_CTX_free(ctx); */
+
+/*   return ciphertext_len; */
+/* } */
+
+/* int decrypt(unsigned char *ciphertext, int ciphertext_len, unsigned char *key, */
+/* 	    unsigned char *iv, unsigned char *plaintext, int ctr, int index) */
+/* { */
+/*   EVP_CIPHER_CTX *ctx; */
+
+/*   int len; */
+
+/*   int plaintext_len; */
+
+/*   /\* Create and initialise the context *\/ */
+/*   if(!(ctx = EVP_CIPHER_CTX_new())) handleErrors(); */
+
+/*   /\* Initialise the decryption operation. IMPORTANT - ensure you use a key */
+/*    * and IV size appropriate for your cipher */
+/*    * In this example we are using 256 bit AES (i.e. a 256 bit key). The */
+/*    * IV size for *most* modes is the same as the block size. For AES this */
+/*    * is 128 bits *\/ */
+
+/*   //256 */
+
+/*   //avant => ecb */
+/*   if(ctr) { */
+/*     if(1 != EVP_DecryptInit_ex(ctx, EVP_aes_128_ctr(), NULL, key, iv)) */
+/*       handleErrors(); */
+/*   } */
+/*   else */
+/*       if(1 != EVP_DecryptInit_ex(ctx, EVP_aes_128_cbc(), NULL, key, iv)) */
+/*     handleErrors(); */
+
+/*   /\* Provide the message to be decrypted, and obtain the plaintext output. */
+/*    * EVP_DecryptUpdate can be called multiple times if necessary */
+/*    *\/ */
+  
+/* /\*  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); */
+
+/*   return plaintext_len; */
+/* } */
+
+
+
+
+int main (int argc, char** argv)
+{
+  /* Set up the key and iv. Do I need to say to not hard code these in a
+   * real application? :-)
+   */
+
+  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("ctr %d\n",ctr);
+  printf("lena %d\n",lena);
+  printf("size_buf %d\n",size_buf);
+*/
+
+
+
+  
+  /* A 256 bit key */
+//  unsigned char *key = (unsigned char *)"01234567890123456789012345678901";
+  unsigned char *key = (unsigned char *)"01234567890123450123456789012345";
+  
+  /* A 128 bit IV */
+  unsigned char *iv = (unsigned char *)"0123456789012345";
+
+  unsigned char *tag=  malloc(16);
+  
+  /* Message to be encrypted */
+
+  /* Buffer for ciphertext. Ensure the buffer is long enough for the
+   * ciphertext which may be longer than the plaintext, dependant on the
+   * algorithm and mode
+   */
+
+  int width;
+  int height;
+  uchar *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=size_buf;
+    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(imsize+1000);   //add that for cbc
+  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(imsize+1000); //add that for cbc
+
+  /* Buffer for the decrypted text */
+  uchar *decryptedtext = malloc(imsize+1000); //add that for cbc
+
+  int decryptedtext_len, ciphertext_len;
+
+  /* Initialise the library */
+/*  ERR_load_crypto_strings();
+  OpenSSL_add_all_algorithms();
+  OPENSSL_config(NULL);
+*/
+
+
+  double time_encrypt=0;
+  double time_decrypt=0;
+  double t=TimeStart();
+
+  
+  /* Encrypt the plaintext */
+
+
+  int i;
+
+
+
+  for(int i=0;i<16;i++)
+    printf("%d ",tag[i]);
+  printf("\n");
+  
+//  for(i=0;i<nb_test;i++)
+  {  
+    ciphertext_len = encryptccm (plaintext, imsize, plaintext, imsize, key, iv,
+			      ciphertext, tag);
+  }
+  for(int i=0;i<16;i++) {
+    printf("%d ",tag[i]);
+  }
+  printf("\n");
+ time_encrypt+=TimeStop(t);
+
+// printf("Time encrypt %f\n",time);
+ printf("%f\t",(double)imsize*nb_test/time_encrypt);
+
+ 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);
+ }
+ 
+  
+  t=0;
+  t=TimeStart();
+
+
+  
+  //for(int i=0;i<nb_test;i++)
+  {  
+    /* Decrypt the ciphertext */
+    decryptedtext_len = decryptccm(ciphertext, ciphertext_len,ciphertext, ciphertext_len,tag,  key, iv,
+				decryptedtext);
+  }
+
+ time_decrypt+=TimeStop(t);
+
+ //printf("Time decrypt %f\n",time);
+ printf("%f\t",(double)imsize*nb_test/time_decrypt);
+
+ 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 */
+  EVP_cleanup();
+  ERR_free_strings();
+
+  return 0;
+}