X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/a66fca86b9f81e07161e89c101338968eda9d6c5..ab92e6c301adf29e5091ed263e6ef589f15e33d4:/client/loclass/ikeys.h

diff --git a/client/loclass/ikeys.h b/client/loclass/ikeys.h
index 0b943d6b..13096194 100644
--- a/client/loclass/ikeys.h
+++ b/client/loclass/ikeys.h
@@ -1,8 +1,70 @@
+/*****************************************************************************
+ * 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/>.
+ * 
+ * 
+ * 
+ ****************************************************************************/
+
 #ifndef IKEYS_H
 #define IKEYS_H
-int testKeyDiversification();
-int doKeyTests();
-void hash0(uint64_t c, uint8_t *k);
-void pushbackSixBitByte(uint64_t *c, uint8_t z, int n);
-uint8_t getSixBitByte(uint64_t c, int n);
+
+
+/**
+ * @brief
+ *Definition 11. Let the function hash0 : F 82 × F 82 × (F 62 ) 8 → (F 82 ) 8 be defined as
+ *	hash0(x, y, z [0] . . . z [7] ) = k [0] . . . k [7] where
+ * z'[i] = (z[i] mod (63-i)) + i	i =  0...3
+ * z'[i+4] = (z[i+4] mod (64-i)) + i	i =  0...3
+ * ẑ = check(z');
+ * @param c
+ * @param k this is where the diversified key is put (should be 8 bytes)
+ * @return
+ */
+void hash0(uint64_t c, uint8_t k[8]);
+int doKeyTests(uint8_t debuglevel);
+/**
+ * @brief Performs Elite-class key diversification
+ * @param csn
+ * @param key
+ * @param div_key
+ */
+
+void diversifyKey(uint8_t csn[8], uint8_t key[8], uint8_t div_key[8]);
+/**
+ * @brief Permutes a key from standard NIST format to Iclass specific format
+ * @param key
+ * @param dest
+ */
+
 #endif // IKEYS_H