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1 | /***************************************************************************** | |
2 | * WARNING | |
3 | * | |
4 | * THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY. | |
5 | * | |
6 | * USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL | |
7 | * PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL, | |
8 | * AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES. | |
9 | * | |
10 | * THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS. | |
11 | * | |
12 | ***************************************************************************** | |
13 | * | |
14 | * This file is part of loclass. It is a reconstructon of the cipher engine | |
15 | * used in iClass, and RFID techology. | |
16 | * | |
17 | * The implementation is based on the work performed by | |
18 | * Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and | |
19 | * Milosch Meriac in the paper "Dismantling IClass". | |
20 | * | |
21 | * Copyright (C) 2014 Martin Holst Swende | |
22 | * | |
23 | * This is free software: you can redistribute it and/or modify | |
24 | * it under the terms of the GNU General Public License version 2 as published | |
25 | * by the Free Software Foundation, or, at your option, any later version. | |
26 | * | |
27 | * This file is distributed in the hope that it will be useful, | |
28 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
29 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
30 | * GNU General Public License for more details. | |
31 | * | |
32 | * You should have received a copy of the GNU General Public License | |
33 | * along with loclass. If not, see <http://www.gnu.org/licenses/>. | |
34 | * | |
35 | * | |
36 | ****************************************************************************/ | |
37 | ||
38 | ||
39 | #ifndef CIPHERUTILS_H | |
40 | #define CIPHERUTILS_H | |
41 | #include <stdint.h> | |
42 | #include <stdbool.h> | |
43 | #include <stdlib.h> | |
44 | ||
45 | typedef struct { | |
46 | uint8_t * buffer; | |
47 | uint8_t numbits; | |
48 | uint8_t position; | |
49 | } BitstreamIn; | |
50 | ||
51 | typedef struct { | |
52 | uint8_t * buffer; | |
53 | uint8_t numbits; | |
54 | uint8_t position; | |
55 | }BitstreamOut; | |
56 | ||
57 | bool headBit( BitstreamIn *stream); | |
58 | bool tailBit( BitstreamIn *stream); | |
59 | void pushBit( BitstreamOut *stream, bool bit); | |
60 | int bitsLeft( BitstreamIn *stream); | |
61 | #ifndef ON_DEVICE | |
62 | int testCipherUtils(void); | |
63 | int testMAC(); | |
64 | #endif | |
65 | void push6bits( BitstreamOut* stream, uint8_t bits); | |
66 | void EncryptDES(bool key[56], bool outBlk[64], bool inBlk[64], int verbose) ; | |
67 | void x_num_to_bytes(uint64_t n, size_t len, uint8_t* dest); | |
68 | uint64_t x_bytes_to_num(uint8_t* src, size_t len); | |
69 | uint8_t reversebytes(uint8_t b); | |
70 | void reverse_arraybytes(uint8_t* arr, size_t len); | |
71 | void reverse_arraycopy(uint8_t* arr, uint8_t* dest, size_t len); | |
72 | void printarr(char * name, uint8_t* arr, int len); | |
73 | void printvar(char * name, uint8_t* arr, int len); | |
74 | void printarr_human_readable(char * title, uint8_t* arr, int len); | |
75 | #endif // CIPHERUTILS_H |