/* crypto1.c
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License
- as published by the Free Software Foundation; either version 2
- of the License, or (at your option) any later version.
-
- This program 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 this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
- MA 02110-1301, US
-
- Copyright (C) 2008-2008 bla <blapost@gmail.com>
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+
+ This program 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 this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ MA 02110-1301, US
+
+ Copyright (C) 2008-2008 bla <blapost@gmail.com>
*/
#include "crapto1.h"
#include <stdlib.h>
-#define SWAPENDIAN(x)\
- (x = (x >> 8 & 0xff00ff) | (x & 0xff00ff) << 8, x = x >> 16 | x << 16)
-
void crypto1_create(struct Crypto1State *s, uint64_t key)
{
// struct Crypto1State *s = malloc(sizeof(*s));
s->odd = s->odd << 1 | BIT(key, (i - 1) ^ 7);
s->even = s->even << 1 | BIT(key, i ^ 7);
}
- return;
}
void crypto1_destroy(struct Crypto1State *state)
{
// free(state);
- state->odd = 0;
- state->even = 0;
+ state->odd = 0;
+ state->even = 0;
}
void crypto1_get_lfsr(struct Crypto1State *state, uint64_t *lfsr)
{
uint8_t crypto1_bit(struct Crypto1State *s, uint8_t in, int is_encrypted)
{
uint32_t feedin;
+ uint32_t tmp;
uint8_t ret = filter(s->odd);
feedin = ret & !!is_encrypted;
feedin ^= LF_POLY_EVEN & s->even;
s->even = s->even << 1 | parity(feedin);
- s->odd ^= (s->odd ^= s->even, s->even ^= s->odd);
+ tmp = s->odd;
+ s->odd = s->even;
+ s->even = tmp;
return ret;
}
uint8_t crypto1_byte(struct Crypto1State *s, uint8_t in, int is_encrypted)
{
+/*
uint8_t i, ret = 0;
for (i = 0; i < 8; ++i)
ret |= crypto1_bit(s, BIT(in, i), is_encrypted) << i;
-
+*/
+// unfold loop 20161012
+ uint8_t ret = 0;
+ ret |= crypto1_bit(s, BIT(in, 0), is_encrypted) << 0;
+ ret |= crypto1_bit(s, BIT(in, 1), is_encrypted) << 1;
+ ret |= crypto1_bit(s, BIT(in, 2), is_encrypted) << 2;
+ ret |= crypto1_bit(s, BIT(in, 3), is_encrypted) << 3;
+ ret |= crypto1_bit(s, BIT(in, 4), is_encrypted) << 4;
+ ret |= crypto1_bit(s, BIT(in, 5), is_encrypted) << 5;
+ ret |= crypto1_bit(s, BIT(in, 6), is_encrypted) << 6;
+ ret |= crypto1_bit(s, BIT(in, 7), is_encrypted) << 7;
return ret;
}
uint32_t crypto1_word(struct Crypto1State *s, uint32_t in, int is_encrypted)
{
+/*
uint32_t i, ret = 0;
for (i = 0; i < 32; ++i)
ret |= crypto1_bit(s, BEBIT(in, i), is_encrypted) << (i ^ 24);
-
+*/
+//unfold loop 2016012
+ uint32_t ret = 0;
+ ret |= crypto1_bit(s, BEBIT(in, 0), is_encrypted) << (0 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 1), is_encrypted) << (1 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 2), is_encrypted) << (2 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 3), is_encrypted) << (3 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 4), is_encrypted) << (4 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 5), is_encrypted) << (5 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 6), is_encrypted) << (6 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 7), is_encrypted) << (7 ^ 24);
+
+ ret |= crypto1_bit(s, BEBIT(in, 8), is_encrypted) << (8 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 9), is_encrypted) << (9 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 10), is_encrypted) << (10 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 11), is_encrypted) << (11 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 12), is_encrypted) << (12 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 13), is_encrypted) << (13 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 14), is_encrypted) << (14 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 15), is_encrypted) << (15 ^ 24);
+
+ ret |= crypto1_bit(s, BEBIT(in, 16), is_encrypted) << (16 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 17), is_encrypted) << (17 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 18), is_encrypted) << (18 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 19), is_encrypted) << (19 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 20), is_encrypted) << (20 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 21), is_encrypted) << (21 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 22), is_encrypted) << (22 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 23), is_encrypted) << (23 ^ 24);
+
+ ret |= crypto1_bit(s, BEBIT(in, 24), is_encrypted) << (24 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 25), is_encrypted) << (25 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 26), is_encrypted) << (26 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 27), is_encrypted) << (27 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 28), is_encrypted) << (28 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 29), is_encrypted) << (29 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 30), is_encrypted) << (30 ^ 24);
+ ret |= crypto1_bit(s, BEBIT(in, 31), is_encrypted) << (31 ^ 24);
return ret;
}
return SWAPENDIAN(x);
}
+
+uint32_t prng_successor_one(uint32_t x)
+{
+ SWAPENDIAN(x);
+
+ x = x >> 1 | (x >> 16 ^ x >> 18 ^ x >> 19 ^ x >> 21) << 31;
+
+ return SWAPENDIAN(x);
+}
+
projects / proxmark3-svn / blobdiff