Limit to single-DES operation and return session key to client.

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

diff --git a/client/loclass/ikeys.c b/client/loclass/ikeys.c
index cd2b72ee0e8d0c26872888b025ba7ca479eed102..a55227efd440948152a9e4478ddb97692e7aef92 100644 (file)
--- a/client/loclass/ikeys.c
+++ b/client/loclass/ikeys.c
@@ -1,15 +1,23 @@
 /*****************************************************************************
 /*****************************************************************************

- * 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".
  *
  * 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
  * Copyright (C) 2014 Martin Holst Swende
  *
  * This is free software: you can redistribute it and/or modify


@@ -22,8 +30,12 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * 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/>.
+ * 
+ * 
+ * 

  ****************************************************************************/
  ****************************************************************************/

+

 /**
 
 
 /**
 
 


@@ -391,7 +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);
 
        //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);
 }
 
        hash0(crypt_csn,div_key);
 }


@@ -725,16 +737,14 @@ int doTestsWithKnownInputs()
 
 int readKeyFile(uint8_t key[8])
 {
 
 int readKeyFile(uint8_t key[8])
 {

-

        FILE *f;
        FILE *f;

-
+       int retval = 1;

        f = fopen("iclass_key.bin", "rb");
        if (f)
        {
                if(fread(key, sizeof(key), 1, f) == 1) return 0;
        }
        f = fopen("iclass_key.bin", "rb");
        if (f)
        {
                if(fread(key, sizeof(key), 1, f) == 1) return 0;
        }

-       return 1;
-
+       return retval;

 }
 
 
 }