first version of cipher_jpg

diff --git a/CipherImg/cipher_jpg.cpp b/CipherImg/cipher_jpg.cpp
new file mode 100644 (file)
index 0000000..ccd9f8c
--- /dev/null
+++ b/CipherImg/cipher_jpg.cpp
@@ -0,0 +1,106 @@
+//g++     cipher_jpg.cpp   -o cipher_jpg -O3
+
+//cipher_jpg ~/Pictures/ecuador\ 2013/IMG_7548.JPG 38762
+//usage cipher_jpg image seed
+
+#include <iostream>
+#include <fstream>
+#include <iterator>
+#include <vector>
+
+
+using namespace std;
+
+typedef unsigned char uchar;
+
+uchar modulo(int x,int N){ return (x % N + N) %N; }
+
+void fxor(uchar *buf,int sz, int seed,int enc) {
+   int start,end;
+  
+  for(int i=1;i<sz;i++) {
+    if(((uint)buf[i-1])==0xFF && ((uint)buf[i])==0xDA) {
+      cout<<"s "<<i+1<<endl;
+      start=i+16;//not nice
+    }
+    if(((uint)buf[i-1])==0xFF && ((uint)buf[i])==0xD9) {
+      cout<<"e "<<i-2<<endl;
+      end=i-2;
+    }
+  }
+
+
+ 
+
+  srand48(seed);
+
+
+  for(int i=0;i<(end-start)/10;i++) {
+    int p=lrand48()%(end-start)+start;
+    if(p<=start || p>=end)
+      cout<<"pb"<<endl;
+    while(buf[p-1]==255 || buf[p]==255 ){
+      p=lrand48()%(end-start)+start;
+      if(p<=start || p>=end)
+       cout<<"pb"<<endl;
+    }
+    uchar v=lrand48()%255;
+    if(enc) {
+      buf[p]=modulo((int)buf[p]+(int)v,255);
+    }
+    else {
+      buf[p]=modulo((int)buf[p]-(int)v,255);
+    }
+  }
+
+}
+
+
+int  main(int argc, char **argv){
+  cout<<argv[1]<< endl;
+
+  FILE *fp;
+  fp = fopen(argv[1], "r");
+  fseek(fp, 0L, SEEK_END);
+  int sz = ftell(fp);
+  fseek(fp, 0, SEEK_SET);
+
+  uchar *buf=(uchar*)malloc(sz);
+  uchar *buf2=(uchar*)malloc(sz);
+  fread(buf, sz, 1, fp);
+  fclose(fp);
+
+   
+  int seed=atoi(argv[2]);
+  cout<<sz<<endl;
+ 
+
+  fxor(buf,sz,seed,1);
+  
+
+  fp = fopen("lena2.jpg", "w");
+  fwrite (buf , 1, sz, fp);
+  fclose(fp);
+
+  for(int i=0;i<sz;i++) {
+    buf2[i]=buf[i];
+  }
+
+  
+
+
+  fxor(buf2,sz,seed,0);
+
+  fp = fopen("lena3.jpg", "w");
+  fwrite (buf2 , 1, sz, fp);
+  fclose(fp);
+
+
+
+
+
+
+  uchar res=modulo(-1,255);
+  cout<<(int)res<<endl;
+  cout<<-1%255<<endl;
+}

diff --git a/OneRoundIoT/OneRound/one_round_hash.cpp b/OneRoundIoT/OneRound/one_round_hash.cpp
index bf3cfbbb2a54a185609c937c3efa180839b5ba9b..373892ccc8b32248389106e7b884399830d42eb7 100644 (file)
--- a/OneRoundIoT/OneRound/one_round_hash.cpp
+++ b/OneRoundIoT/OneRound/one_round_hash.cpp
@@ -237,7 +237,7 @@ void diff(uchar *Y, uchar *X, int h) {
   }
   else if(h==32) {
 
-    
+    /*  
     Y[0]=X[0]^X[1]^X[2]^X[3]^X[4]^X[7]^X[8]^X[10]^X[12]^X[15]^X[16]^X[17]^X[18]^X[20]^X[21]^X[24]^X[25]^X[28]^X[30];
     Y[1]=X[0]^ X[1]^X[2]^X[3]^X[5]^X[6]^X[9]^X[11]^X[13]^X[14]^X[16]^X[17]^X[19]^X[20]^X[21]^ X[24]^X[25]^X[29]^X[31];
     Y[2]=X[0]^X[1]^X[2]^X[3]^X[5]^X[6]^X[8]^X[10]^X[13]^X[14]^X[16]^X[18]^X[19]^X[22]^X[23]^X[26]^X[27]^X[28]^X[30];
@@ -270,6 +270,76 @@ void diff(uchar *Y, uchar *X, int h) {
     Y[29]=X[2]^X[3]^X[6]^X[7]^X[14]^X[15]^X[17]^X[19]^X[20]^X[23]^X[24]^X[27]^X[29]^X[30]^X[31];
     Y[30]=X[1]^X[2]^X[4]^X[5]^X[12]^X[13]^X[16]^X[18]^X[20]^X[23]^X[24]^X[27]^X[28]^X[29]^X[30];
     Y[31]=X[2]^X[3]^X[4]^X[5]^X[12]^X[13]^X[17]^X[19]^X[21]^X[22]^X[25]^X[26]^X[28]^X[29]^X[31];
+*/
+
+
+    uchar X0=X[0];
+    uchar X1=X[1];
+    uchar X2=X[2];
+    uchar X3=X[3];
+    uchar X4=X[4];
+    uchar X5=X[5];
+    uchar X6=X[6];
+    uchar X7=X[7];
+    uchar X8=X[8];
+    uchar X9=X[9];
+    uchar X10=X[10];
+    uchar X11=X[11];
+    uchar X12=X[12];
+    uchar X13=X[13];
+    uchar X14=X[14];
+    uchar X15=X[15]; 
+    uchar X16=X[16];
+    uchar X17=X[17];
+    uchar X18=X[18];
+    uchar X19=X[19];
+    uchar X20=X[20];
+    uchar X21=X[21];
+    uchar X22=X[22];
+    uchar X23=X[23];
+    uchar X24=X[24];
+    uchar X25=X[25];
+    uchar X26=X[26];
+    uchar X27=X[27];
+    uchar X28=X[28];
+    uchar X29=X[29];
+    uchar X30=X[30];
+    uchar X31=X[31]; 
+    
+    Y[0]=X0^X1^X2^X3^X4^X7^X8^X10^X12^X15^X16^X17^X18^X20^X21^X24^X25^X28^X30;
+    Y[1]=X0^ X1^X2^X3^X5^X6^X9^X11^X13^X14^X16^X17^X19^X20^X21^ X24^X25^X29^X31;
+    Y[2]=X0^X1^X2^X3^X5^X6^X8^X10^X13^X14^X16^X18^X19^X22^X23^X26^X27^X28^X30;
+    Y[3]=X0^X1^X2^X3^X4^X7^X9^X11^X12^X15^X17^X18^X19^X22^X23^X26^X27^X29^X31;
+    Y[4]=X0^X3^X5^X6^X7^X10^X11^ X12^X13^X14^ X15^X16^X19^X21^X23^  X25^X27^X30^X31;  
+    Y[5]=X1^X2^X4^X6^X7^X10^X11^X12^X13^X14^X16 ^X17^X18^X20^X22^X24^X26^X30^X31;
+    Y[6]=X1^X2^X4^X5^X7^X8^X9^X12^X13^X14^X15^ X17^X18^X21^X23^X25^X27^X28^X29;
+    Y[7]=X0^X3^X4^X5^X6^X9 ^X9^X12^X13^X14^X15^X16^X19^X20^X22^X24^X26^X28^X29;
+    Y[8]=X0^X2^X6^X7^X8^X10^X11^X14^X15^X16^X18^X21^X22^X25^X26;
+    Y[9]=X1^ X3^X6^X7^X9^X10^X11^X14^X15^X17^X19^X20^X23^X24^X27;
+    Y[10]=X0^X2^X4^X5^X8^X9^X10^X12^X13^X16^X18^X20^X23^ X24^X27;
+    Y[11]=X1^X3^X4^X5^X8^X9^X11^X12^X13^X17^X19^X21^X22^X25^X26;
+    Y[12]=X0^X3^X4^X5^X6^X7^X10^X11^X13^X14^X15^X16^X19^X21^X23^X25^X27^X30^X31;
+    Y[13]=X1^X2^X4^X5^X6^X7^X10^X11^X12^X14^X15^X17^ X18^X20^X22^X24^X26^X30^X31;
+    Y[14]=X1^X2^X4^X5^X6^X7^X8^X9^X12^X13^X15^X17^X18^X21^X23^X25^X27^X28^X29;
+    Y[15]=X0^X3^X4^X5^X6^X7^X8^X9^X12^X13^X14^X16^X19^X20^X22^ X24^X26^X28^X29;
+    Y[16]=X0^X1^X2^X4^X8 ^X8^X10^X13 ^X15^X16^X17^X18^X19^X20^X21^X24^X25^X28^X30;
+    Y[17]=X0^X1^X3^X5^X6^X9^X11^X13^X14^X16^X17^X18^X19^X20^X21^X24^X25^X29^X31;
+    Y[18]=X0^X2^X3^X5^X6^X8^X10^X13^X14^X16^X17^X18^X19^X22^X23^X26^X27^X28^X30;
+    Y[19]=X1^X2^X3^X4^X7^X9^X11^X12^X15^X16^X17^X18^X19^X22^X23^X26^X28 ^X29^X31;
+    Y[20]=X0^X1^X5^X7^X10 ^X10^X13^X15^X16^X17^X20^X21^X23^X29^X30;
+    Y[21]=X0^X1^X4^X6^X8^X11^X12^X14^X16^X17^X20^X21^X22^X28^X31;
+    Y[22]=X2^X3^X5^X7^X8^X11^X13^X15^X18^X19^X21^X22^X23^X28^X31;
+    Y[23]=X2^X3^X4^X6^X9^X10^X12^X14^ X18^X19^X20^X22^X23^X29^X30;
+    Y[24]=X0^X1^X5^X7^X9^X10^X13^X15^X16^X17^X24^X25^X27^X29^X30;
+    Y[25]=X0^X1^X4^X6^X8^X11^X12^X14^X16^X17^X24^X25^X26^X28^X31;
+    Y[26]=X2^X3^X5^X7^X8^X11^X13^X15^X18^X19^X25^X26^X27^X28^ X31;
+    Y[27]=X2^X3^X4^X6^X9^X10^X12^X14^X18^X19^X24^X26^X27^X29^X30;
+    Y[28]=X0^X2^X6^X7^X14^X15^X16^X18^X21^X22^X25^X26^X28^X30^X31;
+    Y[29]=X2^X3^X6^X7^X14^X15^X17^X19^X20^X23^X24^X27^X29^X30^X31;
+    Y[30]=X1^X2^X4^X5^X12^X13^X16^X18^X20^X23^X24^X27^X28^X29^X30;
+    Y[31]=X2^X3^X4^X5^X12^X13^X17^X19^X21^X22^X25^X26^X28^X29^X31;
+
+    
   }
 
 }

diff --git a/OneRoundIoT/OneRound/one_round_hash_new.cpp b/OneRoundIoT/OneRound/one_round_hash_new.cpp
index fbb517f053f291e54dccc1a584ff4e8374effb11..a72d301ec98184bfd327d62bb05e4bc958aa330e 100644 (file)
--- a/OneRoundIoT/OneRound/one_round_hash_new.cpp
+++ b/OneRoundIoT/OneRound/one_round_hash_new.cpp
@@ -186,33 +186,42 @@ void hash_DSD_BIN(uchar* seq_in, uchar* RM1,int len, int *PboxRM, uchar *Sbox1,
 
     for(int a=0;a<h;a+=4) {
       Y[a]=Sbox1[Y[a]];
-      //Y[a]=circ(Y[a],3);
+      Y[a+1]=Sbox1[Y[a+1]];
+      Y[a+2]=Sbox1[Y[a+2]];
+      Y[a+3]=Sbox1[Y[a+3]];
     }
+  
+
+
+    
     
     Z[h-1]=Y[h-1]^Y[0];
     for(int a=h-1;a>0;a--) {
       Z[a-1]=Z[a]^Y[a];
     }
 
-    for(int a=0;a<h;a+=4) {
+    /*  for(int a=0;a<h;a+=4) {
       Z[a]=Sbox2[Z[a]];
-      //Z[a]=circ(Z[a],7);
-    }
+      Z[a+1]=Sbox2[Z[a+1]];
+      Z[a+2]=Sbox2[Z[a+2]];
+      Z[a+3]=Sbox2[Z[a+3]];
+
+      }*/
 
     
     
     for(int a=0;a<h;a+=4) {
-      /*     RM1[a]=Z[a];
+      RM1[a]=Z[a];
       RM1[a+1]=Z[a+1];
       RM1[a+2]=Z[a+2];
       RM1[a+3]=Z[a+3];
-      */
-
+      
+/*
       RM1[a]=Z[a]^RM1[PboxRM[a]];
       RM1[a+1]=Z[a+1]^RM1[PboxRM[a+1]];
       RM1[a+2]=Z[a+2]^RM1[PboxRM[a+2]];
       RM1[a+3]=Z[a+3]^RM1[PboxRM[a+3]];
-      
+*/    
     }
     
   }