Updated the README.txt

[proxmark3-svn] / client / loclass / elite_crack.c

diff --git a/client/loclass/elite_crack.c b/client/loclass/elite_crack.c
index 1a464b6cd8c05225b56d090ec50a144edd301103..3801d662cddb0089d4181618d5fd9185557443da 100644 (file)
--- a/client/loclass/elite_crack.c
+++ b/client/loclass/elite_crack.c
@@ -1,3 +1,41 @@
+/*****************************************************************************
+ * WARNING
+ *
+ * THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY. 
+ * 
+ * USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL 
+ * PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL, 
+ * AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES. 
+ * 
+ * THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS. 
+ *
+ *****************************************************************************
+ *
+ * This file is part of loclass. It is a reconstructon of the cipher engine
+ * used in iClass, and RFID techology.
+ *
+ * The implementation is based on the work performed by
+ * Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
+ * Milosch Meriac in the paper "Dismantling IClass".
+ *
+ * Copyright (C) 2014 Martin Holst Swende
+ *
+ * This is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with loclass.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ * 
+ * 
+ ****************************************************************************/
+
 #include <stdint.h>
 #include <stdbool.h>
 #include <string.h>
@@ -113,9 +151,9 @@ void hash1(uint8_t csn[] , uint8_t k[])
        k[0] = csn[0]^csn[1]^csn[2]^csn[3]^csn[4]^csn[5]^csn[6]^csn[7];
        k[1] = csn[0]+csn[1]+csn[2]+csn[3]+csn[4]+csn[5]+csn[6]+csn[7];
        k[2] = rr(swap( csn[2]+k[1] ));
-       k[3] = rr(swap( csn[3]+k[0] ));
-       k[4] = ~rr(swap( csn[4]+k[2] ))+1;
-       k[5] = ~rr(swap( csn[5]+k[3] ))+1;
+       k[3] = rl(swap( csn[3]+k[0] ));
+       k[4] = ~rr( csn[4]+k[2] )+1;
+       k[5] = ~rl( csn[5]+k[3] )+1;
        k[6] = rr( csn[6]+(k[4]^0x3c) );
        k[7] = rl( csn[7]+(k[5]^0xc3) );
        int i;
@@ -514,7 +552,6 @@ int bruteforceDump(uint8_t dump[], size_t dumpsize, uint16_t keytable[])
  */
 int bruteforceFile(const char *filename, uint16_t keytable[])
 {
-
        FILE *f = fopen(filename, "rb");
        if(!f) {
                prnlog("Failed to read from file '%s'", filename);