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Refactor parity functions

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- get rid of __asm function in crapto1.h, use gcc builtin function instead
- make parity functions available in common directory
This commit is contained in:
pwpiwi 2017-03-24 23:50:50 +01:00
commit 1f065e1dad
14 changed files with 127 additions and 90 deletions
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4
common/crapto1/crypto1.c
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@ -18,7 +18,9 @@
Copyright (C) 2008-2008 bla <blapost@gmail.com>
*/
#include "crapto1.h"
#include <stdlib.h>
#include "parity.h"
#define SWAPENDIAN(x)\
(x = (x >> 8 & 0xff00ff) | (x & 0xff00ff) << 8, x = x >> 16 | x << 16)
@ -73,7 +75,7 @@ uint8_t crypto1_bit(struct Crypto1State *s, uint8_t in, int is_encrypted)
feedin ^= !!in;
feedin ^= LF_POLY_ODD & s->odd;
feedin ^= LF_POLY_EVEN & s->even;
s->even = s->even << 1 | parity(feedin);
s->even = s->even << 1 | evenparity32(feedin);
t = s->odd, s->odd = s->even, s->even = t;