X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/Cipher_code.git/blobdiff_plain/d7b1b0a02049045042632ad2f2d86c6489c20cde..c92009fe1efa17ab89dea62611b3c53f3bdfdb5a:/OneRoundIoT/OneRound/rc4_hash3.cpp?ds=sidebyside

diff --git a/OneRoundIoT/OneRound/rc4_hash3.cpp b/OneRoundIoT/OneRound/rc4_hash3.cpp
index 07269d0..3cb1e07 100644
--- a/OneRoundIoT/OneRound/rc4_hash3.cpp
+++ b/OneRoundIoT/OneRound/rc4_hash3.cpp
@@ -138,7 +138,7 @@ void prga(uchar *sc, uchar *X, int ldata, uchar *r, int h) {
 inline uchar  circ(uchar x,int n) {return (x << n) | (x >> (8 - n));}
 
 
-uint64_t xorshift64( const uint64_t state)
+inline static uint64_t xorshift64( const uint64_t state)
 {
   uint64_t x = state;
   x^= x << 13;
@@ -148,7 +148,7 @@ uint64_t xorshift64( const uint64_t state)
 }
 
 
-static inline uint64_t splitmix64(uint64_t index) {
+inline static  uint64_t splitmix64(uint64_t index) {
   uint64_t z = (index + UINT64_C(0x9E3779B97F4A7C15));
   z = (z ^ (z >> 30)) * UINT64_C(0xBF58476D1CE4E5B9);
   z = (z ^ (z >> 27)) * UINT64_C(0x94D049BB133111EB);
@@ -163,31 +163,20 @@ static inline uint64_t splitmix64(uint64_t index) {
 
 //the proposed hash function, which is based on DSD structure. Sensitivity is ensured by employing the binary diffusion
 
-void hash_DSD_BIN(uchar* seq_in, uchar* RM1,int len, uchar *S, int h) {
+void hash_DSD_BIN(uint64_t * ss, uint64_t* rm,int len,int h) {
 
 
-  // Goal: Calculate the hash value
-  // Output: RM (hash value)
-  uchar X[h];
-  int ind1,ind2;
-
-
-  uint64_t *rm=(uint64_t*)RM1;
-  //  uint64_t *xx=(uint64_t*)X;
-  uint64_t *ss=(uint64_t*)seq_in;
-
-
-  int a;
+  int ind1=0;
+  
   for(int it=0;it<len;it++) {
-    ind1=(it*h)>>3;
-    // Mix with dynamic RM
-    rm[0]=rm[0]^ss[ind1];
+    rm[0]=rm[h-1]^ss[ind1];
     rm[0]=xorshift64(rm[0] );
-    for(a=1;a<(h>>3);a++) {
-      rm[a]=rm[a]^ss[ind1+a];
-      rm[a]=xorshift64(rm[a] ^ rm[a-1]);
+    for(int a=1;a<h;a++) {
+      rm[a]=rm[a-1]^ss[ind1+a];
+      rm[a]=xorshift64(rm[a]);
     }
-    rm[0]=xorshift64(rm[a] ^ rm[0] );
+
+    ind1+=h;
   }
 
  
@@ -286,12 +275,12 @@ int main(int argc, char** argv) {
   if(change==1) {
     
     seq[4]++;
-    seq[5]--;
+    //    seq[5]--;
   }
   if(change==2) {
     
     seq[9]++;
-    seq[10]--;
+    //   seq[10]--;
   }
 
   printf("seq 4 %d\n",seq[4]);
@@ -364,10 +353,15 @@ int main(int argc, char** argv) {
 
   
   time=0;
+  uint64_t *rm=(uint64_t*)RM1;
+  uint64_t *ss=(uint64_t*)seq;
+
+
+
   t=TimeStart();
   for(int i=0;i<nb_test;i++)
   {
-    hash_DSD_BIN(seq, RM1,len,Sbox1,h);
+    hash_DSD_BIN(ss, rm,len,h>>3);
   }