From: Raphaël Couturier <raphael.couturier@univ-fcomte.fr>
Date: Sun, 7 Jul 2019 19:24:53 +0000 (+0200)
Subject: add openssl hmac
X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/Cipher_code.git/commitdiff_plain/4e82257884f5ab73a3add3a448bfc85caa8cbfa5?ds=sidebyside;hp=-c

add openssl hmac
---

4e82257884f5ab73a3add3a448bfc85caa8cbfa5
diff --git a/OneRoundIoT/openssl/Makefile b/OneRoundIoT/openssl/Makefile
index 65338fd..34b74d2 100644
--- a/OneRoundIoT/openssl/Makefile
+++ b/OneRoundIoT/openssl/Makefile
@@ -5,6 +5,7 @@ OBJ2 =    pixmap_io.o openssl_evp_cmac.o
 OBJ3 =    pixmap_io.o openssl_evp_ccm.o
 OBJ4 =    pixmap_io.o aesccm.o 
 OBJ5 =    pixmap_io.o openssl_evp_gcm.o
+OBJ6 =    pixmap_io.o openssl_evp_hmac.o
 
 openssl_evp: $(OBJ)
 	$(C) -o $@ $^ $(CFLAGS)
@@ -22,6 +23,10 @@ aesccm: $(OBJ4)
 openssl_evp_gcm: $(OBJ5)
 	$(C) -o $@ $^ $(CFLAGS)
 
+openssl_evp_hmac: $(OBJ6)
+	$(C) -o $@ $^ $(CFLAGS)
+
+
 %.o: %.c 
 	$(C) -c -o $@ $<  -O3
 
diff --git a/OneRoundIoT/openssl/openssl_evp_hmac.c b/OneRoundIoT/openssl/openssl_evp_hmac.c
new file mode 100644
index 0000000..eae5d01
--- /dev/null
+++ b/OneRoundIoT/openssl/openssl_evp_hmac.c
@@ -0,0 +1,333 @@
+//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 <openssl/cmac.h>
+#include <openssl/hmac.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 printBytes(unsigned char *buf, size_t len) {
+  for(int i=0; i<len; i++) {
+    printf("%02x ", buf[i]);
+  }
+  printf("\n");
+}
+
+
+void handleErrors(void)
+{
+  ERR_print_errors_fp(stderr);
+  abort();
+}
+
+
+int encrypt(unsigned char *plaintext, int plaintext_len, unsigned char *key,
+	    unsigned char *iv, unsigned char *ciphertext, int ctr, int index)
+{
+  
+  HMAC_CTX *ctx;
+
+ 
+  int len;
+
+  int ciphertext_len;
+  // ENGINE_load_builtin_engines();
+  //ENGINE_register_all_complete();
+
+	
+  /* Create and initialise the context */
+  if(!(ctx = HMAC_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(1 != HMAC_Init_ex(ctx, key, 32, EVP_sha256(), NULL))
+    handleErrors();
+  // size_t mactlen;
+  //unsigned char mact[16] = {0};
+
+ unsigned char* result;
+ unsigned int result_len = 32;
+
+ 
+ unsigned char hash_sha256[SHA256_DIGEST_LENGTH];
+ char hash_sha256_hex[SHA256_DIGEST_LENGTH * 2 + 1];
+
+  memset( hash_sha256_hex, 0, SHA256_DIGEST_LENGTH * 2 + 1);
+ 
+  //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 != HMAC_Update(ctx,  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 != HMAC_Final(ctx,  hash_sha256, &result_len)) handleErrors();
+
+
+  ciphertext_len += len;
+
+  printBytes(hash_sha256, result_len);
+  
+  /*
+  char *p = &hash_sha256_hex[0];
+  unsigned char *h = &hash_sha256[0];
+  for (int i = 0; i < result_len; ++i, ++h)
+  {
+    p += snprintf(p, 3, "%02x", *h);
+  }
+
+    printf("SHA256\t: %s\n", hash_sha256_hex);
+  */
+    
+  /* Clean up */
+  HMAC_CTX_free(ctx);
+
+  return ciphertext_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;
+  int change=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
+    if(strncmp(argv[i],"c",1)==0) change = atoi(&(argv[i][1]));          //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 *)"0123456789012345";
+  
+  /* A 128 bit IV */
+  unsigned char *iv = (unsigned char *)"0123456789012345";
+
+  /* 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];
+    }
+  }
+
+   if(change==1) {
+    
+    plaintext[4]++;
+  }
+  if(change==2) {
+    
+    plaintext[9]++;
+  }
+
+
+  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(i=0;i<nb_test;i++)
+  {  
+    ciphertext_len = encrypt (plaintext, imsize, key, iv,
+			      ciphertext, ctr, i );
+  }
+
+ time_encrypt+=TimeStop(t);
+
+// printf("Time encrypt %f\n",time);
+ printf("%e\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 = decrypt(ciphertext, ciphertext_len, key, iv,
+				decryptedtext,ctr, i);
+  }
+
+ 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;
+}