X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/2ae8a312e058f71d0f02be4f2f9cc6f284ebbf34..e3ab50cafb66e8d594a4946537594e01882d9242:/client/loclass/ikeys.c

diff --git a/client/loclass/ikeys.c b/client/loclass/ikeys.c
index b0528b5c..fccd71d8 100644
--- a/client/loclass/ikeys.c
+++ b/client/loclass/ikeys.c
@@ -18,6 +18,10 @@
  * 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
@@ -30,12 +34,8 @@
  * 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/>.
- * 
- * 
- * 
+ * along with IClassCipher.  If not, see <http://www.gnu.org/licenses/>.
  ****************************************************************************/
-
 /**
 
 
@@ -403,7 +403,7 @@ void diversifyKey(uint8_t csn[8], uint8_t key[8], uint8_t div_key[8])
 
 	//Calculate HASH0(DES))
     uint64_t crypt_csn = x_bytes_to_num(crypted_csn, 8);
-	uint64_t crypted_csn_swapped = swapZvalues(crypt_csn);
+    //uint64_t crypted_csn_swapped = swapZvalues(crypt_csn);
 
 	hash0(crypt_csn,div_key);
 }
@@ -737,16 +737,18 @@ 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(fread(key, sizeof(uint8_t), 8, f) == 1) 
+	 	{
+	 		retval = 0;	
+	 	}
+		fclose(f);
 	}
-	return 1;
-
+	return retval;
 }