116 lines
3.1 KiB
C
116 lines
3.1 KiB
C
/*
|
|
* UFC-crypt: ultra fast crypt(3) implementation
|
|
*
|
|
* Copyright (C) 1991-2022 Free Software Foundation, Inc.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; see the file COPYING.LIB. If not,
|
|
* see <https://www.gnu.org/licenses/>.
|
|
*
|
|
* @(#)crypt.c 2.25 12/20/96
|
|
*
|
|
* Semiportable C version
|
|
*
|
|
*/
|
|
|
|
#include "crypt-private.h"
|
|
|
|
#ifdef _UFC_32_
|
|
|
|
/*
|
|
* 32 bit version
|
|
*/
|
|
|
|
#define SBA(sb, v) (*(long32*)((char*)(sb)+(v)))
|
|
|
|
void
|
|
_ufc_doit_r (ufc_long itr, struct crypt_data * __restrict __data,
|
|
ufc_long *res)
|
|
{
|
|
int i;
|
|
long32 s, *k;
|
|
long32 *sb01 = (long32*)__data->sb0;
|
|
long32 *sb23 = (long32*)__data->sb2;
|
|
long32 l1, l2, r1, r2;
|
|
|
|
l1 = (long32)res[0]; l2 = (long32)res[1];
|
|
r1 = (long32)res[2]; r2 = (long32)res[3];
|
|
|
|
while(itr--) {
|
|
k = (long32*)__data->keysched;
|
|
for(i=8; i--; ) {
|
|
s = *k++ ^ r1;
|
|
l1 ^= SBA(sb01, s & 0xffff); l2 ^= SBA(sb01, (s & 0xffff)+4);
|
|
l1 ^= SBA(sb01, s >>= 16 ); l2 ^= SBA(sb01, (s )+4);
|
|
s = *k++ ^ r2;
|
|
l1 ^= SBA(sb23, s & 0xffff); l2 ^= SBA(sb23, (s & 0xffff)+4);
|
|
l1 ^= SBA(sb23, s >>= 16 ); l2 ^= SBA(sb23, (s )+4);
|
|
|
|
s = *k++ ^ l1;
|
|
r1 ^= SBA(sb01, s & 0xffff); r2 ^= SBA(sb01, (s & 0xffff)+4);
|
|
r1 ^= SBA(sb01, s >>= 16 ); r2 ^= SBA(sb01, (s )+4);
|
|
s = *k++ ^ l2;
|
|
r1 ^= SBA(sb23, s & 0xffff); r2 ^= SBA(sb23, (s & 0xffff)+4);
|
|
r1 ^= SBA(sb23, s >>= 16 ); r2 ^= SBA(sb23, (s )+4);
|
|
}
|
|
s=l1; l1=r1; r1=s; s=l2; l2=r2; r2=s;
|
|
}
|
|
res[0] = l1; res[1] = l2; res[2] = r1; res[3] = r2;
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef _UFC_64_
|
|
|
|
/*
|
|
* 64 bit version
|
|
*/
|
|
|
|
#define SBA(sb, v) (*(long64*)((char*)(sb)+(v)))
|
|
|
|
void
|
|
_ufc_doit_r (ufc_long itr, struct crypt_data * __restrict __data,
|
|
ufc_long *res)
|
|
{
|
|
int i;
|
|
long64 l, r, s, *k;
|
|
long64 *sb01 = (long64*)__data->sb0;
|
|
long64 *sb23 = (long64*)__data->sb2;
|
|
|
|
l = (((long64)res[0]) << 32) | ((long64)res[1]);
|
|
r = (((long64)res[2]) << 32) | ((long64)res[3]);
|
|
|
|
while(itr--) {
|
|
k = (long64*)__data->keysched;
|
|
for(i=8; i--; ) {
|
|
s = *k++ ^ r;
|
|
l ^= SBA(sb23, (s ) & 0xffff);
|
|
l ^= SBA(sb23, (s >>= 16) & 0xffff);
|
|
l ^= SBA(sb01, (s >>= 16) & 0xffff);
|
|
l ^= SBA(sb01, (s >>= 16) );
|
|
|
|
s = *k++ ^ l;
|
|
r ^= SBA(sb23, (s ) & 0xffff);
|
|
r ^= SBA(sb23, (s >>= 16) & 0xffff);
|
|
r ^= SBA(sb01, (s >>= 16) & 0xffff);
|
|
r ^= SBA(sb01, (s >>= 16) );
|
|
}
|
|
s=l; l=r; r=s;
|
|
}
|
|
|
|
res[0] = l >> 32; res[1] = l & 0xffffffff;
|
|
res[2] = r >> 32; res[3] = r & 0xffffffff;
|
|
}
|
|
|
|
#endif
|