From eff7c8ed3a5515ef551c85075c5532c6f6f5c7d4 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Rapha=C3=ABl=20Couturier?= <raphael.couturier@univ-fcomte.fr>
Date: Sun, 1 Mar 2020 14:30:12 +0100
Subject: [PATCH] new

---
 OneRoundIoT/OneRound/rc4_hash3.cpp | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

diff --git a/OneRoundIoT/OneRound/rc4_hash3.cpp b/OneRoundIoT/OneRound/rc4_hash3.cpp
index 07269d0..822b1aa 100644
--- a/OneRoundIoT/OneRound/rc4_hash3.cpp
+++ b/OneRoundIoT/OneRound/rc4_hash3.cpp
@@ -169,7 +169,8 @@ void hash_DSD_BIN(uchar* seq_in, uchar* RM1,int len, uchar *S, int h) {
   // Goal: Calculate the hash value
   // Output: RM (hash value)
   uchar X[h];
-  int ind1,ind2;
+  //uint64_t rm2[h>>8];
+  int ind1=0;
 
 
   uint64_t *rm=(uint64_t*)RM1;
@@ -177,17 +178,21 @@ void hash_DSD_BIN(uchar* seq_in, uchar* RM1,int len, uchar *S, int h) {
   uint64_t *ss=(uint64_t*)seq_in;
 
 
-  int a;
+  int a=0;
+  
   for(int it=0;it<len;it++) {
-    ind1=(it*h)>>3;
     // Mix with dynamic RM
     rm[0]=rm[0]^ss[ind1];
     rm[0]=xorshift64(rm[0] );
-    for(a=1;a<(h>>3);a++) {
+    for(a=1;a<h;a++) {
       rm[a]=rm[a]^ss[ind1+a];
       rm[a]=xorshift64(rm[a] ^ rm[a-1]);
     }
-    rm[0]=xorshift64(rm[a] ^ rm[0] );
+    //    printf("argh %d\n",a);
+    rm[0]=xorshift64(rm[a-1]);
+
+
+    ind1+=h;
   }
 
  
@@ -286,12 +291,12 @@ 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]);
@@ -367,7 +372,7 @@ int main(int argc, char** argv) {
   t=TimeStart();
   for(int i=0;i<nb_test;i++)
   {
-    hash_DSD_BIN(seq, RM1,len,Sbox1,h);
+    hash_DSD_BIN(seq, RM1,len,Sbox1,h>>3);
   }
 
 
-- 
2.39.5