X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/74a3880283e26a957b61221028792a868daa7f05..818efbebb87ec5485fbf367021dca42514dfdee0:/client/loclass/ikeys.c?ds=sidebyside

diff --git a/client/loclass/ikeys.c b/client/loclass/ikeys.c
index 2bedad8d..2a6a0010 100644
--- a/client/loclass/ikeys.c
+++ b/client/loclass/ikeys.c
@@ -1,20 +1,28 @@
 /*****************************************************************************
- * This file is part of iClassCipher. It is a reconstructon of the cipher engine
+ * 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".
  *
- * This is a reference implementation of iclass key diversification. I'm sure it can be
- * optimized heavily. It is written for ease of understanding and correctness, please take it
- * and tweak it and make a super fast version instead, using this for testing and verification.
-
  * 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.
+ * by the Free Software Foundation, or, at your option, any later version. 
  *
  * This file is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -22,8 +30,11 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with IClassCipher.  If not, see <http://www.gnu.org/licenses/>.
+ * along with loclass.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ * 
  ****************************************************************************/
+
 /**
 
 
@@ -57,7 +68,7 @@ From "Dismantling iclass":
 #include <inttypes.h>
 #include "fileutils.h"
 #include "cipherutils.h"
-#include "des.h"
+#include "polarssl/des.h"
 
 uint8_t pi[35] = {0x0F,0x17,0x1B,0x1D,0x1E,0x27,0x2B,0x2D,0x2E,0x33,0x35,0x39,0x36,0x3A,0x3C,0x47,0x4B,0x4D,0x4E,0x53,0x55,0x56,0x59,0x5A,0x5C,0x63,0x65,0x66,0x69,0x6A,0x6C,0x71,0x72,0x74,0x78};
 
@@ -390,8 +401,8 @@ void diversifyKey(uint8_t csn[8], uint8_t key[8], uint8_t div_key[8])
 	des_crypt_ecb(&ctx_enc,csn, crypted_csn);
 
 	//Calculate HASH0(DES))
-        uint64_t crypt_csn = x_bytes_to_num(crypted_csn, 8);
-	uint64_t crypted_csn_swapped = swapZvalues(crypt_csn);
+    uint64_t crypt_csn = x_bytes_to_num(crypted_csn, 8);
+    //uint64_t crypted_csn_swapped = swapZvalues(crypt_csn);
 
 	hash0(crypt_csn,div_key);
 }
@@ -725,19 +736,19 @@ int doTestsWithKnownInputs()
 
 int readKeyFile(uint8_t key[8])
 {
-
 	FILE *f;
-
+	int retval = 1;
 	f = fopen("iclass_key.bin", "rb");
-	if (f)
-	{
-		if(fread(key, sizeof(key), 1, f) == 1) return 0;
+	if (!f)
+		return retval;
+	
+	if (fread(key, sizeof(uint8_t), 8, f) == 8) {
+		retval = 0;
 	}
-	return 1;
-
+	fclose(f);	
+	return retval;
 }
 
-
 int doKeyTests(uint8_t debuglevel)
 {
 	debug_print = debuglevel;