Commit 1f8717d3 authored by Niels Möller's avatar Niels Möller

(libnettle_a_SOURCES): Added serpent files.

Rev: src/nettle/Makefile.am:1.4
Rev: src/nettle/serpent.c:1.1
Rev: src/nettle/serpent.h:1.1
Rev: src/nettle/serpent_sboxes.h:1.1
parent 072dd6ef
......@@ -8,7 +8,8 @@ lib_LIBRARIES = libnettle.a
libnettleinclude_HEADERS = aes.h arcfour.h des.h md5.h sha1.h
libnettle_a_SOURCES = aes.c aes.h arcfour.c arcfour.h des.c des.h \
md5.c md5.h sha1.c sha1.h
md5.c md5.h sha1.c sha1.h \
serpent.c serpent.h serpent_sboxes.h
libnettle_a_LIBADD = @LIBOBJS@
......
This diff is collapsed.
/* serpent.h
*
* The serpent block cipher.
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 2001 Niels Möller
*
* The nettle 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.
*
* The GNU MP 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 the GNU MP Library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
/* Serpent is a 128-bit block cipher that accepts a key size of 256
* bits, designed by Ross Anderson, Eli Biham, and Lars Knudsen. See
* http://www.cl.cam.ac.uk/~rja14/serpent.html for details.
*/
#ifndef NETTLE_SERPENT_H_INCLUDED
#define NETTLE_SERPENT_H_INCLUDED
#include <stdint.h>
#define SERPENT_BLOCKSIZE 16
/* Other key lengths are possible, but we only use 256 bits. Besides, the
design of Serpent makes other key lengths useless; they cheated with the
AES requirements, using a 256-bit key length exclusively and just padding
it out if the desired key length was less, so there really is no advantage
to using key lengths less than 256 bits. */
#define SERPENT_KEYSIZE 32
/* Allow keys of size 128 <= bits <= 256 */
#define SERPENT_MIN_KEY_SIZE 16
#define SERPENT_MAX_KEY_SIZE 32
struct serpent_ctx
{
uint32_t keys[33][4]; /* key schedule */
};
void
serpent_set_key(struct serpent_ctx *ctx,
unsigned length, const uint8_t *key);
void
serpent_encrypt(struct aes_ctx *ctx,
unsigned length, uint8_t *dst,
const uint8_t *src);
void
serpent_decrypt(struct aes_ctx *ctx,
unsigned length, uint8_t *dst,
const uint8_t *src);
#endif /* NETTLE_SERPENT_H_INCLUDED */
/* serpentsboxes.h
*
* $Id$
*
* For more details on this algorithm, see the Serpent website at
* http://www.cl.cam.ac.uk/~rja14/serpent.html
*/
/* Copyright (C) 1998 Ross Anderson, Eli Biham, Lars Knudsen
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* I've modified this code a bit so that it interoperates with lsh
* properly. 2000-9-5, Rafael R. Sevilla <dido@pacific.net.ph>
*/
/* NOTE: The copyright notice for the original version of this code
* said "All rights reserved. This code is freely distributed for AES
* selection process. No other use is allowed." However, the authors
* later decided to GPL the code. /nisse */
#ifndef SERPENT_SBOXES_H_INCLUDED
#define SERPENT_SBOXES_H_INCLUDED
#include "serpent.h"
/* S0: 3 8 15 1 10 6 5 11 14 13 4 2 7 0 9 12 */
/* depth = 5,7,4,2, Total gates=18 */
#define RND00(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t05, t06, t07, t08, t09, t11, t12, t13, t14, t15, t17, t01;\
t01 = b ^ c ; \
t02 = a | d ; \
t03 = a ^ b ; \
z = t02 ^ t01; \
t05 = c | z ; \
t06 = a ^ d ; \
t07 = b | c ; \
t08 = d & t05; \
t09 = t03 & t07; \
y = t09 ^ t08; \
t11 = t09 & y ; \
t12 = c ^ d ; \
t13 = t07 ^ t11; \
t14 = b & t06; \
t15 = t06 ^ t13; \
w = ~ t15; \
t17 = w ^ t14; \
x = t12 ^ t17; }
/* InvS0: 13 3 11 0 10 6 5 12 1 14 4 7 15 9 8 2 */
/* depth = 8,4,3,6, Total gates=19 */
#define InvRND00(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t04, t05, t06, t08, t09, t10, t12, t13, t14, t15, t17, t18, t01;\
t01 = c ^ d ; \
t02 = a | b ; \
t03 = b | c ; \
t04 = c & t01; \
t05 = t02 ^ t01; \
t06 = a | t04; \
y = ~ t05; \
t08 = b ^ d ; \
t09 = t03 & t08; \
t10 = d | y ; \
x = t09 ^ t06; \
t12 = a | t05; \
t13 = x ^ t12; \
t14 = t03 ^ t10; \
t15 = a ^ c ; \
z = t14 ^ t13; \
t17 = t05 & t13; \
t18 = t14 | t17; \
w = t15 ^ t18; }
/* S1: 15 12 2 7 9 0 5 10 1 11 14 8 6 13 3 4 */
/* depth = 10,7,3,5, Total gates=18 */
#define RND01(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t04, t05, t06, t07, t08, t10, t11, t12, t13, t16, t17, t01;\
t01 = a | d ; \
t02 = c ^ d ; \
t03 = ~ b ; \
t04 = a ^ c ; \
t05 = a | t03; \
t06 = d & t04; \
t07 = t01 & t02; \
t08 = b | t06; \
y = t02 ^ t05; \
t10 = t07 ^ t08; \
t11 = t01 ^ t10; \
t12 = y ^ t11; \
t13 = b & d ; \
z = ~ t10; \
x = t13 ^ t12; \
t16 = t10 | x ; \
t17 = t05 & t16; \
w = c ^ t17; }
/* InvS1: 5 8 2 14 15 6 12 3 11 4 7 9 1 13 10 0 */
/* depth = 7,4,5,3, Total gates=18 */
#define InvRND01(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t04, t05, t06, t07, t08, t09, t10, t11, t14, t15, t17, t01;\
t01 = a ^ b ; \
t02 = b | d ; \
t03 = a & c ; \
t04 = c ^ t02; \
t05 = a | t04; \
t06 = t01 & t05; \
t07 = d | t03; \
t08 = b ^ t06; \
t09 = t07 ^ t06; \
t10 = t04 | t03; \
t11 = d & t08; \
y = ~ t09; \
x = t10 ^ t11; \
t14 = a | y ; \
t15 = t06 ^ x ; \
z = t01 ^ t04; \
t17 = c ^ t15; \
w = t14 ^ t17; }
/* S2: 8 6 7 9 3 12 10 15 13 1 14 4 0 11 5 2 */
/* depth = 3,8,11,7, Total gates=16 */
#define RND02(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t05, t06, t07, t08, t09, t10, t12, t13, t14, t01;\
t01 = a | c ; \
t02 = a ^ b ; \
t03 = d ^ t01; \
w = t02 ^ t03; \
t05 = c ^ w ; \
t06 = b ^ t05; \
t07 = b | t05; \
t08 = t01 & t06; \
t09 = t03 ^ t07; \
t10 = t02 | t09; \
x = t10 ^ t08; \
t12 = a | d ; \
t13 = t09 ^ x ; \
t14 = b ^ t13; \
z = ~ t09; \
y = t12 ^ t14; }
/* InvS2: 12 9 15 4 11 14 1 2 0 3 6 13 5 8 10 7 */
/* depth = 3,6,8,3, Total gates=18 */
#define InvRND02(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t04, t06, t07, t08, t09, t10, t11, t12, t15, t16, t17, t01;\
t01 = a ^ d ; \
t02 = c ^ d ; \
t03 = a & c ; \
t04 = b | t02; \
w = t01 ^ t04; \
t06 = a | c ; \
t07 = d | w ; \
t08 = ~ d ; \
t09 = b & t06; \
t10 = t08 | t03; \
t11 = b & t07; \
t12 = t06 & t02; \
z = t09 ^ t10; \
x = t12 ^ t11; \
t15 = c & z ; \
t16 = w ^ x ; \
t17 = t10 ^ t15; \
y = t16 ^ t17; }
/* S3: 0 15 11 8 12 9 6 3 13 1 2 4 10 7 5 14 */
/* depth = 8,3,5,5, Total gates=18 */
#define RND03(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t04, t05, t06, t07, t08, t09, t10, t11, t13, t14, t15, t01;\
t01 = a ^ c ; \
t02 = a | d ; \
t03 = a & d ; \
t04 = t01 & t02; \
t05 = b | t03; \
t06 = a & b ; \
t07 = d ^ t04; \
t08 = c | t06; \
t09 = b ^ t07; \
t10 = d & t05; \
t11 = t02 ^ t10; \
z = t08 ^ t09; \
t13 = d | z ; \
t14 = a | t07; \
t15 = b & t13; \
y = t08 ^ t11; \
w = t14 ^ t15; \
x = t05 ^ t04; }
/* InvS3: 0 9 10 7 11 14 6 13 3 5 12 2 4 8 15 1 */
/* depth = 3,6,4,4, Total gates=17 */
#define InvRND03(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t04, t05, t06, t07, t09, t11, t12, t13, t14, t16, t01;\
t01 = c | d ; \
t02 = a | d ; \
t03 = c ^ t02; \
t04 = b ^ t02; \
t05 = a ^ d ; \
t06 = t04 & t03; \
t07 = b & t01; \
y = t05 ^ t06; \
t09 = a ^ t03; \
w = t07 ^ t03; \
t11 = w | t05; \
t12 = t09 & t11; \
t13 = a & y ; \
t14 = t01 ^ t05; \
x = b ^ t12; \
t16 = b | t13; \
z = t14 ^ t16; }
/* S4: 1 15 8 3 12 0 11 6 2 5 4 10 9 14 7 13 */
/* depth = 6,7,5,3, Total gates=19 */
#define RND04(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t04, t05, t06, t08, t09, t10, t11, t12, t13, t14, t15, t16, t01;\
t01 = a | b ; \
t02 = b | c ; \
t03 = a ^ t02; \
t04 = b ^ d ; \
t05 = d | t03; \
t06 = d & t01; \
z = t03 ^ t06; \
t08 = z & t04; \
t09 = t04 & t05; \
t10 = c ^ t06; \
t11 = b & c ; \
t12 = t04 ^ t08; \
t13 = t11 | t03; \
t14 = t10 ^ t09; \
t15 = a & t05; \
t16 = t11 | t12; \
y = t13 ^ t08; \
x = t15 ^ t16; \
w = ~ t14; }
/* InvS4: 5 0 8 3 10 9 7 14 2 12 11 6 4 15 13 1 */
/* depth = 6,4,7,3, Total gates=17 */
#define InvRND04(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t04, t05, t06, t07, t09, t10, t11, t12, t13, t15, t01;\
t01 = b | d ; \
t02 = c | d ; \
t03 = a & t01; \
t04 = b ^ t02; \
t05 = c ^ d ; \
t06 = ~ t03; \
t07 = a & t04; \
x = t05 ^ t07; \
t09 = x | t06; \
t10 = a ^ t07; \
t11 = t01 ^ t09; \
t12 = d ^ t04; \
t13 = c | t10; \
z = t03 ^ t12; \
t15 = a ^ t04; \
y = t11 ^ t13; \
w = t15 ^ t09; }
/* S5: 15 5 2 11 4 10 9 12 0 3 14 8 13 6 7 1 */
/* depth = 4,6,8,6, Total gates=17 */
#define RND05(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t04, t05, t07, t08, t09, t10, t11, t12, t13, t14, t01;\
t01 = b ^ d ; \
t02 = b | d ; \
t03 = a & t01; \
t04 = c ^ t02; \
t05 = t03 ^ t04; \
w = ~ t05; \
t07 = a ^ t01; \
t08 = d | w ; \
t09 = b | t05; \
t10 = d ^ t08; \
t11 = b | t07; \
t12 = t03 | w ; \
t13 = t07 | t10; \
t14 = t01 ^ t11; \
y = t09 ^ t13; \
x = t07 ^ t08; \
z = t12 ^ t14; }
/* InvS5: 8 15 2 9 4 1 13 14 11 6 5 3 7 12 10 0 */
/* depth = 4,6,9,7, Total gates=17 */
#define InvRND05(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t04, t05, t07, t08, t09, t10, t12, t13, t15, t16, t01;\
t01 = a & d ; \
t02 = c ^ t01; \
t03 = a ^ d ; \
t04 = b & t02; \
t05 = a & c ; \
w = t03 ^ t04; \
t07 = a & w ; \
t08 = t01 ^ w ; \
t09 = b | t05; \
t10 = ~ b ; \
x = t08 ^ t09; \
t12 = t10 | t07; \
t13 = w | x ; \
z = t02 ^ t12; \
t15 = t02 ^ t13; \
t16 = b ^ d ; \
y = t16 ^ t15; }
/* S6: 7 2 12 5 8 4 6 11 14 9 1 15 13 3 10 0 */
/* depth = 8,3,6,3, Total gates=19 */
#define RND06(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t04, t05, t07, t08, t09, t10, t11, t12, t13, t15, t17, t18, t01;\
t01 = a & d ; \
t02 = b ^ c ; \
t03 = a ^ d ; \
t04 = t01 ^ t02; \
t05 = b | c ; \
x = ~ t04; \
t07 = t03 & t05; \
t08 = b & x ; \
t09 = a | c ; \
t10 = t07 ^ t08; \
t11 = b | d ; \
t12 = c ^ t11; \
t13 = t09 ^ t10; \
y = ~ t13; \
t15 = x & t03; \
z = t12 ^ t07; \
t17 = a ^ b ; \
t18 = y ^ t15; \
w = t17 ^ t18; }
/* InvS6: 15 10 1 13 5 3 6 0 4 9 14 7 2 12 8 11 */
/* depth = 5,3,8,6, Total gates=19 */
#define InvRND06(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t04, t05, t06, t07, t08, t09, t12, t13, t14, t15, t16, t17, t01;\
t01 = a ^ c ; \
t02 = ~ c ; \
t03 = b & t01; \
t04 = b | t02; \
t05 = d | t03; \
t06 = b ^ d ; \
t07 = a & t04; \
t08 = a | t02; \
t09 = t07 ^ t05; \
x = t06 ^ t08; \
w = ~ t09; \
t12 = b & w ; \
t13 = t01 & t05; \
t14 = t01 ^ t12; \
t15 = t07 ^ t13; \
t16 = d | t02; \
t17 = a ^ x ; \
z = t17 ^ t15; \
y = t16 ^ t14; }
/* S7: 1 13 15 0 14 8 2 11 7 4 12 10 9 3 5 6 */
/* depth = 10,7,10,4, Total gates=19 */
#define RND07(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t04, t05, t06, t08, t09, t10, t11, t13, t14, t15, t16, t17, t01;\
t01 = a & c ; \
t02 = ~ d ; \
t03 = a & t02; \
t04 = b | t01; \
t05 = a & b ; \
t06 = c ^ t04; \
z = t03 ^ t06; \
t08 = c | z ; \
t09 = d | t05; \
t10 = a ^ t08; \
t11 = t04 & z ; \
x = t09 ^ t10; \
t13 = b ^ x ; \
t14 = t01 ^ x ; \
t15 = c ^ t05; \
t16 = t11 | t13; \
t17 = t02 | t14; \
w = t15 ^ t17; \
y = a ^ t16; }
/* InvS7: 3 0 6 13 9 14 15 8 5 12 11 7 10 1 4 2 */
/* depth = 9,7,3,3, Total gates=18 */
#define InvRND07(a,b,c,d,w,x,y,z) \
{ register uint32_t t02, t03, t04, t06, t07, t08, t09, t10, t11, t13, t14, t15, t16, t01;\
t01 = a & b ; \
t02 = a | b ; \
t03 = c | t01; \
t04 = d & t02; \
z = t03 ^ t04; \
t06 = b ^ t04; \
t07 = d ^ z ; \
t08 = ~ t07; \
t09 = t06 | t08; \
t10 = b ^ d ; \
t11 = a | d ; \
x = a ^ t09; \
t13 = c ^ t06; \
t14 = c & t11; \
t15 = d | x ; \
t16 = t01 | t10; \
w = t13 ^ t15; \
y = t14 ^ t16; }
#define RND08(a,b,c,d,e,f,g,h) RND00(a,b,c,d,e,f,g,h)
#define RND09(a,b,c,d,e,f,g,h) RND01(a,b,c,d,e,f,g,h)
#define RND10(a,b,c,d,e,f,g,h) RND02(a,b,c,d,e,f,g,h)
#define RND11(a,b,c,d,e,f,g,h) RND03(a,b,c,d,e,f,g,h)
#define RND12(a,b,c,d,e,f,g,h) RND04(a,b,c,d,e,f,g,h)
#define RND13(a,b,c,d,e,f,g,h) RND05(a,b,c,d,e,f,g,h)
#define RND14(a,b,c,d,e,f,g,h) RND06(a,b,c,d,e,f,g,h)
#define RND15(a,b,c,d,e,f,g,h) RND07(a,b,c,d,e,f,g,h)
#define RND16(a,b,c,d,e,f,g,h) RND00(a,b,c,d,e,f,g,h)
#define RND17(a,b,c,d,e,f,g,h) RND01(a,b,c,d,e,f,g,h)
#define RND18(a,b,c,d,e,f,g,h) RND02(a,b,c,d,e,f,g,h)
#define RND19(a,b,c,d,e,f,g,h) RND03(a,b,c,d,e,f,g,h)
#define RND20(a,b,c,d,e,f,g,h) RND04(a,b,c,d,e,f,g,h)
#define RND21(a,b,c,d,e,f,g,h) RND05(a,b,c,d,e,f,g,h)
#define RND22(a,b,c,d,e,f,g,h) RND06(a,b,c,d,e,f,g,h)
#define RND23(a,b,c,d,e,f,g,h) RND07(a,b,c,d,e,f,g,h)
#define RND24(a,b,c,d,e,f,g,h) RND00(a,b,c,d,e,f,g,h)
#define RND25(a,b,c,d,e,f,g,h) RND01(a,b,c,d,e,f,g,h)
#define RND26(a,b,c,d,e,f,g,h) RND02(a,b,c,d,e,f,g,h)
#define RND27(a,b,c,d,e,f,g,h) RND03(a,b,c,d,e,f,g,h)
#define RND28(a,b,c,d,e,f,g,h) RND04(a,b,c,d,e,f,g,h)
#define RND29(a,b,c,d,e,f,g,h) RND05(a,b,c,d,e,f,g,h)
#define RND30(a,b,c,d,e,f,g,h) RND06(a,b,c,d,e,f,g,h)
#define RND31(a,b,c,d,e,f,g,h) RND07(a,b,c,d,e,f,g,h)
#define InvRND08(a,b,c,d,e,f,g,h) InvRND00(a,b,c,d,e,f,g,h)
#define InvRND09(a,b,c,d,e,f,g,h) InvRND01(a,b,c,d,e,f,g,h)
#define InvRND10(a,b,c,d,e,f,g,h) InvRND02(a,b,c,d,e,f,g,h)
#define InvRND11(a,b,c,d,e,f,g,h) InvRND03(a,b,c,d,e,f,g,h)
#define InvRND12(a,b,c,d,e,f,g,h) InvRND04(a,b,c,d,e,f,g,h)
#define InvRND13(a,b,c,d,e,f,g,h) InvRND05(a,b,c,d,e,f,g,h)
#define InvRND14(a,b,c,d,e,f,g,h) InvRND06(a,b,c,d,e,f,g,h)
#define InvRND15(a,b,c,d,e,f,g,h) InvRND07(a,b,c,d,e,f,g,h)
#define InvRND16(a,b,c,d,e,f,g,h) InvRND00(a,b,c,d,e,f,g,h)
#define InvRND17(a,b,c,d,e,f,g,h) InvRND01(a,b,c,d,e,f,g,h)
#define InvRND18(a,b,c,d,e,f,g,h) InvRND02(a,b,c,d,e,f,g,h)
#define InvRND19(a,b,c,d,e,f,g,h) InvRND03(a,b,c,d,e,f,g,h)
#define InvRND20(a,b,c,d,e,f,g,h) InvRND04(a,b,c,d,e,f,g,h)
#define InvRND21(a,b,c,d,e,f,g,h) InvRND05(a,b,c,d,e,f,g,h)
#define InvRND22(a,b,c,d,e,f,g,h) InvRND06(a,b,c,d,e,f,g,h)
#define InvRND23(a,b,c,d,e,f,g,h) InvRND07(a,b,c,d,e,f,g,h)
#define InvRND24(a,b,c,d,e,f,g,h) InvRND00(a,b,c,d,e,f,g,h)
#define InvRND25(a,b,c,d,e,f,g,h) InvRND01(a,b,c,d,e,f,g,h)
#define InvRND26(a,b,c,d,e,f,g,h) InvRND02(a,b,c,d,e,f,g,h)
#define InvRND27(a,b,c,d,e,f,g,h) InvRND03(a,b,c,d,e,f,g,h)
#define InvRND28(a,b,c,d,e,f,g,h) InvRND04(a,b,c,d,e,f,g,h)
#define InvRND29(a,b,c,d,e,f,g,h) InvRND05(a,b,c,d,e,f,g,h)
#define InvRND30(a,b,c,d,e,f,g,h) InvRND06(a,b,c,d,e,f,g,h)
#define InvRND31(a,b,c,d,e,f,g,h) InvRND07(a,b,c,d,e,f,g,h)
/* Linear transformations and key mixing: */
#define ROL(x,n) ((((uint32_t)(x))<<(n))| \
(((uint32_t)(x))>>(32-(n))))
#define ROR(x,n) ((((uint32_t)(x))<<(32-(n)))| \
(((uint32_t)(x))>>(n)))
#define transform(x0, x1, x2, x3, y0, y1, y2, y3) \
y0 = ROL(x0, 13); \
y2 = ROL(x2, 3); \
y1 = x1 ^ y0 ^ y2; \
y3 = x3 ^ y2 ^ ((uint32_t)y0)<<3; \
y1 = ROL(y1, 1); \
y3 = ROL(y3, 7); \
y0 = y0 ^ y1 ^ y3; \
y2 = y2 ^ y3 ^ ((uint32_t)y1<<7); \
y0 = ROL(y0, 5); \
y2 = ROL(y2, 22)
#define inv_transform(x0, x1, x2, x3, y0, y1, y2, y3) \
y2 = ROR(x2, 22);\
y0 = ROR(x0, 5); \
y2 = y2 ^ x3 ^ ((uint32_t)x1<<7); \
y0 = y0 ^ x1 ^ x3; \
y3 = ROR(x3, 7); \
y1 = ROR(x1, 1); \
y3 = y3 ^ y2 ^ ((uint32_t)y0)<<3; \
y1 = y1 ^ y0 ^ y2; \
y2 = ROR(y2, 3); \
y0 = ROR(y0, 13)
#define keying(x0, x1, x2, x3, subkey) \
x0^=subkey[0];x1^=subkey[1]; \
x2^=subkey[2];x3^=subkey[3]
/* PHI: Constant used in the key schedule */
#define PHI 0x9e3779b9L
#endif /* SERPENT_SBOXES_H_INCLUDED */
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