projects / proxmark3-svn / blame
| Commit | Line | Data |
|---|---|---|
| f89c7050 M |
1 | /* crapto1.h |
| 2 | ||
| 3 | This program is free software; you can redistribute it and/or | |
| 4 | modify it under the terms of the GNU General Public License | |
| 5 | as published by the Free Software Foundation; either version 2 | |
| 6 | of the License, or (at your option) any later version. | |
| 7 | ||
| 8 | This program is distributed in the hope that it will be useful, | |
| 9 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 11 | GNU General Public License for more details. | |
| 12 | ||
| 13 | You should have received a copy of the GNU General Public License | |
| 14 | along with this program; if not, write to the Free Software | |
| 15 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, | |
| 16 | MA 02110-1301, US$ | |
| 17 | ||
| 0ca9bc0e | 18 | Copyright (C) 2008-2014 bla <blapost@gmail.com> |
| f89c7050 M |
19 | */ |
| 20 | #ifndef CRAPTO1_INCLUDED | |
| 21 | #define CRAPTO1_INCLUDED | |
| 22 | #include <stdint.h> | |
| 23 | #ifdef __cplusplus | |
| 24 | extern "C" { | |
| 25 | #endif | |
| 26 | ||
| 27 | struct Crypto1State {uint32_t odd, even;}; | |
| bd2797de | 28 | #if defined(__arm__) && !defined(__linux__) && !defined(_WIN32) && !defined(__APPLE__) // bare metal ARM Proxmark lacks malloc()/free() |
| 33443e7c | 29 | void crypto1_create(struct Crypto1State *s, uint64_t key); |
| 30 | #else | |
| 31 | struct Crypto1State *crypto1_create(uint64_t key); | |
| 32 | #endif | |
| f89c7050 M |
33 | void crypto1_destroy(struct Crypto1State*); |
| 34 | void crypto1_get_lfsr(struct Crypto1State*, uint64_t*); | |
| 35 | uint8_t crypto1_bit(struct Crypto1State*, uint8_t, int); | |
| 36 | uint8_t crypto1_byte(struct Crypto1State*, uint8_t, int); | |
| 37 | uint32_t crypto1_word(struct Crypto1State*, uint32_t, int); | |
| 38 | uint32_t prng_successor(uint32_t x, uint32_t n); | |
| 39 | ||
| 40 | struct Crypto1State* lfsr_recovery32(uint32_t ks2, uint32_t in); | |
| 41 | struct Crypto1State* lfsr_recovery64(uint32_t ks2, uint32_t ks3); | |
| 42 | uint32_t *lfsr_prefix_ks(uint8_t ks[8], int isodd); | |
| 43 | struct Crypto1State* | |
| de867f50 | 44 | lfsr_common_prefix(uint32_t pfx, uint32_t rr, uint8_t ks[8], uint8_t par[8][8], uint32_t no_par); |
| f89c7050 M |
45 | |
| 46 | ||
| 0ca9bc0e | 47 | uint8_t lfsr_rollback_bit(struct Crypto1State* s, uint32_t in, int fb); |
| 48 | uint8_t lfsr_rollback_byte(struct Crypto1State* s, uint32_t in, int fb); | |
| 49 | uint32_t lfsr_rollback_word(struct Crypto1State* s, uint32_t in, int fb); | |
| f89c7050 | 50 | int nonce_distance(uint32_t from, uint32_t to); |
| f89c7050 M |
51 | #define FOREACH_VALID_NONCE(N, FILTER, FSIZE)\ |
| 52 | uint32_t __n = 0,__M = 0, N = 0;\ | |
| 53 | int __i;\ | |
| 54 | for(; __n < 1 << 16; N = prng_successor(__M = ++__n, 16))\ | |
| 55 | for(__i = FSIZE - 1; __i >= 0; __i--)\ | |
| 1f065e1d | 56 | if(BIT(FILTER, __i) ^ evenparity32(__M & 0xFF01))\ |
| f89c7050 M |
57 | break;\ |
| 58 | else if(__i)\ | |
| 59 | __M = prng_successor(__M, (__i == 7) ? 48 : 8);\ | |
| 60 | else | |
| 61 | ||
| 62 | #define LF_POLY_ODD (0x29CE5C) | |
| 63 | #define LF_POLY_EVEN (0x870804) | |
| 64 | #define BIT(x, n) ((x) >> (n) & 1) | |
| 65 | #define BEBIT(x, n) BIT(x, (n) ^ 24) | |
| f89c7050 M |
66 | static inline int filter(uint32_t const x) |
| 67 | { | |
| 68 | uint32_t f; | |
| 69 | ||
| 70 | f = 0xf22c0 >> (x & 0xf) & 16; | |
| 71 | f |= 0x6c9c0 >> (x >> 4 & 0xf) & 8; | |
| 72 | f |= 0x3c8b0 >> (x >> 8 & 0xf) & 4; | |
| 73 | f |= 0x1e458 >> (x >> 12 & 0xf) & 2; | |
| 74 | f |= 0x0d938 >> (x >> 16 & 0xf) & 1; | |
| 75 | return BIT(0xEC57E80A, f); | |
| 76 | } | |
| 77 | #ifdef __cplusplus | |
| 78 | } | |
| 79 | #endif | |
| 80 | #endif |