/* crapto1.c\r
\r
- This program is free software; you can redistribute it and/or\r
- modify it under the terms of the GNU General Public License\r
- as published by the Free Software Foundation; either version 2\r
- of the License, or (at your option) any later version.\r
-\r
- This program is distributed in the hope that it will be useful,\r
- but WITHOUT ANY WARRANTY; without even the implied warranty of\r
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
- GNU General Public License for more details.\r
-\r
- You should have received a copy of the GNU General Public License\r
- along with this program; if not, write to the Free Software\r
- Foundation, Inc., 51 Franklin Street, Fifth Floor,\r
- Boston, MA 02110-1301, US$\r
-\r
- Copyright (C) 2008-2008 bla <blapost@gmail.com>\r
+ This program is free software; you can redistribute it and/or\r
+ modify it under the terms of the GNU General Public License\r
+ as published by the Free Software Foundation; either version 2\r
+ of the License, or (at your option) any later version.\r
+\r
+ This program is distributed in the hope that it will be useful,\r
+ but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ GNU General Public License for more details.\r
+\r
+ You should have received a copy of the GNU General Public License\r
+ along with this program; if not, write to the Free Software\r
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,\r
+ Boston, MA 02110-1301, US$\r
+\r
+ Copyright (C) 2008-2008 bla <blapost@gmail.com>\r
*/\r
#include "crapto1.h"\r
#include <stdlib.h>\r
static uint8_t filterlut[1 << 20];\r
static void __attribute__((constructor)) fill_lut()\r
{\r
- uint32_t i;\r
- for(i = 0; i < 1 << 20; ++i)\r
- filterlut[i] = filter(i);\r
+ uint32_t i;\r
+ for(i = 0; i < 1 << 20; ++i)\r
+ filterlut[i] = filter(i);\r
}\r
#define filter(x) (filterlut[(x) & 0xfffff])\r
#endif\r
/** extend_table\r
* using a bit of the keystream extend the table of possible lfsr states\r
*/\r
-static inline void\r
-extend_table(uint32_t *tbl, uint32_t **end, int bit, int m1, int m2, uint32_t in)\r
+static inline void extend_table(uint32_t *tbl, uint32_t **end, int bit, int m1, int m2, uint32_t in)\r
{\r
in <<= 24;\r
for(*tbl <<= 1; tbl <= *end; *++tbl <<= 1)\r
eks >>= 1;\r
in >>= 2;\r
extend_table(o_head, &o_tail, oks & 1, LF_POLY_EVEN << 1 | 1,\r
- LF_POLY_ODD << 1, 0);\r
+ LF_POLY_ODD << 1, 0);\r
if(o_head > o_tail)\r
return sl;\r
\r
extend_table(e_head, &e_tail, eks & 1, LF_POLY_ODD,\r
- LF_POLY_EVEN << 1 | 1, in & 3);\r
+ LF_POLY_EVEN << 1 | 1, in & 3);\r
if(e_head > e_tail)\r
return sl;\r
}\r
o_tail = binsearch(o_head, o = o_tail);\r
e_tail = binsearch(e_head, e = e_tail);\r
sl = recover(o_tail--, o, oks,\r
- e_tail--, e, eks, rem, sl, in);\r
+ e_tail--, e, eks, rem, sl, in);\r
}\r
else if(*o_tail > *e_tail)\r
o_tail = binsearch(o_head, o_tail) - 1;\r
*/\r
uint8_t lfsr_rollback_byte(struct Crypto1State *s, uint32_t in, int fb)\r
{\r
- int i, ret = 0;\r
+/* int i, ret = 0;\r
for (i = 7; i >= 0; --i)\r
ret |= lfsr_rollback_bit(s, BIT(in, i), fb) << i;\r
+*/\r
+// unfold loop 20160112\r
+ uint8_t ret = 0;\r
+ ret |= lfsr_rollback_bit(s, BIT(in, 7), fb) << 7;\r
+ ret |= lfsr_rollback_bit(s, BIT(in, 6), fb) << 6;\r
+ ret |= lfsr_rollback_bit(s, BIT(in, 5), fb) << 5;\r
+ ret |= lfsr_rollback_bit(s, BIT(in, 4), fb) << 4;\r
+ ret |= lfsr_rollback_bit(s, BIT(in, 3), fb) << 3;\r
+ ret |= lfsr_rollback_bit(s, BIT(in, 2), fb) << 2;\r
+ ret |= lfsr_rollback_bit(s, BIT(in, 1), fb) << 1;\r
+ ret |= lfsr_rollback_bit(s, BIT(in, 0), fb) << 0;\r
return ret;\r
}\r
/** lfsr_rollback_word\r
*/\r
uint32_t lfsr_rollback_word(struct Crypto1State *s, uint32_t in, int fb)\r
{\r
- int i;\r
+/* int i;\r
uint32_t ret = 0;\r
for (i = 31; i >= 0; --i)\r
ret |= lfsr_rollback_bit(s, BEBIT(in, i), fb) << (i ^ 24);\r
+*/\r
+// unfold loop 20160112\r
+ uint32_t ret = 0;\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 31), fb) << (31 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 30), fb) << (30 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 29), fb) << (29 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 28), fb) << (28 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 27), fb) << (27 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 26), fb) << (26 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 25), fb) << (25 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 24), fb) << (24 ^ 24);\r
+\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 23), fb) << (23 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 22), fb) << (22 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 21), fb) << (21 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 20), fb) << (20 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 19), fb) << (19 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 18), fb) << (18 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 17), fb) << (17 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 16), fb) << (16 ^ 24);\r
+\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 15), fb) << (15 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 14), fb) << (14 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 13), fb) << (13 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 12), fb) << (12 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 11), fb) << (11 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 10), fb) << (10 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 9), fb) << (9 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 8), fb) << (8 ^ 24);\r
+\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 7), fb) << (7 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 6), fb) << (6 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 5), fb) << (5 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 4), fb) << (4 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 3), fb) << (3 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 2), fb) << (2 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 1), fb) << (1 ^ 24);\r
+ ret |= lfsr_rollback_bit(s, BEBIT(in, 0), fb) << (0 ^ 24);\r
return ret;\r
}\r
\r
*/\r
static struct Crypto1State*\r
check_pfx_parity(uint32_t prefix, uint32_t rresp, uint8_t parities[8][8],\r
- uint32_t odd, uint32_t even, struct Crypto1State* sl)\r
+ uint32_t odd, uint32_t even, struct Crypto1State* sl)\r
{\r
uint32_t ks1, nr, ks2, rr, ks3, c, good = 1;\r
\r
\r
odd = lfsr_prefix_ks(ks, 1);\r
even = lfsr_prefix_ks(ks, 0);\r
-\r
+ \r
s = statelist = malloc((sizeof *statelist) << 20);\r
if(!s || !odd || !even) {\r
free(statelist);\r
projects / proxmark3-svn / blobdiff