From: Raphaël Couturier <raphael.couturier@univ-fcomte.fr>
Date: Wed, 16 Jun 2021 11:52:48 +0000 (+0200)
Subject: add
X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/Cipher_code.git/commitdiff_plain/fb12494aee99738f9daab81fad888d1a45b5cb34?ds=sidebyside;hp=49d265094698dee951c0a0bf97f8183cf171f57b

add
---

diff --git a/CipherImg/test_sub_perm.cpp b/CipherImg/test_sub_perm.cpp
new file mode 100644
index 0000000..b52d167
--- /dev/null
+++ b/CipherImg/test_sub_perm.cpp
@@ -0,0 +1,134 @@
+//g++     test_sub_perm.cpp   -o     test_sub_perm -O3  -fpermissive
+
+
+//    ./test_sub_perm  sizebuf512 nb1000
+
+#include <string.h>
+#include <sys/time.h>
+#include<stdlib.h>
+#include<stdio.h>
+#include <iostream>
+
+
+using namespace std;
+
+typedef unsigned char   uchar;
+
+
+
+int nb_test=1;
+int ctr=0;
+
+double time_encrypt=0;
+double time_decrypt=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 rc4key(uchar *key, uchar *sc, int size_DK) {
+
+  for(int i=0;i<256;i++) {
+    sc[i]=i;
+  }
+
+
+  uchar j0 = 0;
+  for(int i0=0; i0<256; i0++) {
+    j0 = (j0 + sc[i0] + key[i0%size_DK] )&0xFF;
+    uchar tmp = sc[i0];
+    sc[i0] = sc[j0 ];
+    sc[j0] = tmp;
+  }
+}
+
+
+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],"sizebuf",7)==0) size_buf = atoi(&(argv[i][7]));          //SIZE of the buffer
+  }
+
+
+
+ int size = 64;
+  uchar DK[size];
+ for(int i=0;i<size;i++) {
+    DK[i]=lrand48()&0xFF;
+  }
+  
+ 
+
+  int width;
+  int height;
+  int imsize;
+  uchar *buffer;
+  uchar Sbox1[256];
+  rc4key(DK, Sbox1, 8);
+
+ 
+  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
+  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;
+
+  double t=TimeStart();  
+  for(int i=0;i<nb_test;i++)
+  {
+
+    for(int j=0;j<imsize;j++)
+      plaintext[j]=Sbox1[plaintext[j]];
+    
+  }
+  double time=TimeStop(t);
+  cout<<"Throughput Sbox \t";
+  cout<<(double)imsize*nb_test/time<<"\t";
+
+
+
+  return 0;
+}