ADD: identification of EM4233

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

diff --git a/client/loclass/cipher.c b/client/loclass/cipher.c
index b3d87402091adbc82ab0c70a416a9f4a1e5e00aa..d3b1e7997beb0971319e3a17d3b3d9db1e5102e6 100644 (file)
--- a/client/loclass/cipher.c
+++ b/client/loclass/cipher.c
@@ -1,5 +1,17 @@
 /*****************************************************************************
- * 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
@@ -18,9 +30,13 @@
  * 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/>.
+ * 
+ * 
+ * 
  ****************************************************************************/
 
+
 #include "cipher.h"
 #include "cipherutils.h"
 #include <stdio.h>
@@ -205,14 +221,14 @@ void MAC(uint8_t* k, BitstreamIn input, BitstreamOut out)
        output(k,initState,&input_32_zeroes,&out);
 }
 
-void doMAC(uint8_t *cc_nr_p, int length,uint8_t *div_key_p, uint8_t mac[4])
+void doMAC(uint8_t *cc_nr_p, int length, uint8_t *div_key_p, uint8_t mac[4])
 {
     uint8_t *cc_nr;
     uint8_t div_key[8];
     cc_nr=(uint8_t*)malloc(length+1);
     memcpy(cc_nr,cc_nr_p,length);
     memcpy(div_key,div_key_p,8);
-    
+
     reverse_arraybytes(cc_nr,length);
     BitstreamIn bitstream = {cc_nr,length * 8,0};
     uint8_t dest []= {0,0,0,0,0,0,0,0};
@@ -220,10 +236,10 @@ void doMAC(uint8_t *cc_nr_p, int length,uint8_t *div_key_p, uint8_t mac[4])
     MAC(div_key,bitstream, out);
     //The output MAC must also be reversed
     reverse_arraybytes(dest, sizeof(dest));
-    memcpy(mac, dest, 4);      
-    printf("Calculated_MAC\t%02x%02x%02x%02x\n", dest[0],dest[1],dest[2],dest[3]);
+    memcpy(mac, dest, 4);
+    //printf("Calculated_MAC\t%02x%02x%02x%02x\n", dest[0],dest[1],dest[2],dest[3]);
     free(cc_nr);
-    return 1;
+    return;
 }
 
 int testMAC()
@@ -237,7 +253,7 @@ int testMAC()
        uint8_t correct_MAC[4] = {0x1d,0x49,0xC9,0xDA};
 
        uint8_t calculated_mac[4] = {0};
-       doMAC(cc_nr, 12, div_key, calculated_mac);
+    doMAC(cc_nr, 12,div_key, calculated_mac);
 
        if(memcmp(calculated_mac, correct_MAC,4) == 0)
        {