c447342094
is an application space macro and the applications are supposed to be free to use it as they please (but cannot). This is consistant with the other BSD's who made this change quite some time ago. More commits to come.
348 lines
10 KiB
C
348 lines
10 KiB
C
/* lib/des/des_locl.h */
|
|
/* Copyright (C) 1995-1996 Eric Young (eay@mincom.oz.au)
|
|
* All rights reserved.
|
|
*
|
|
* This file is part of an SSL implementation written
|
|
* by Eric Young (eay@mincom.oz.au).
|
|
* The implementation was written so as to conform with Netscapes SSL
|
|
* specification. This library and applications are
|
|
* FREE FOR COMMERCIAL AND NON-COMMERCIAL USE
|
|
* as long as the following conditions are aheared to.
|
|
*
|
|
* Copyright remains Eric Young's, and as such any Copyright notices in
|
|
* the code are not to be removed. If this code is used in a product,
|
|
* Eric Young should be given attribution as the author of the parts used.
|
|
* This can be in the form of a textual message at program startup or
|
|
* in documentation (online or textual) provided with the package.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Eric Young (eay@mincom.oz.au)
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* The licence and distribution terms for any publically available version or
|
|
* derivative of this code cannot be changed. i.e. this code cannot simply be
|
|
* copied and put under another distribution licence
|
|
* [including the GNU Public Licence.]
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
/* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
|
|
*
|
|
* Always modify des_locl.org since des_locl.h is automatically generated from
|
|
* it during SSLeay configuration.
|
|
*
|
|
* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/systm.h>
|
|
|
|
#ifndef HEADER_DES_LOCL_H
|
|
#define HEADER_DES_LOCL_H
|
|
|
|
#if defined(WIN32) || defined(WIN16)
|
|
#ifndef MSDOS
|
|
#define MSDOS
|
|
#endif
|
|
#endif
|
|
|
|
/*
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#ifndef MSDOS
|
|
#include <unistd.h>
|
|
#endif
|
|
*/
|
|
#include <crypto/des/des.h>
|
|
|
|
/* the following is tweaked from a config script, that is why it is a
|
|
* protected undef/define */
|
|
#ifndef DES_PTR
|
|
#undef DES_PTR
|
|
#endif
|
|
|
|
#ifdef MSDOS /* Visual C++ 2.1 (Windows NT/95) */
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
#include <time.h>
|
|
#include <io.h>
|
|
#ifndef RAND
|
|
#define RAND
|
|
#endif
|
|
#undef NOPROTO
|
|
#endif
|
|
|
|
#if !defined(_KERNEL) && (defined(__STDC__) || defined(VMS) || defined(M_XENIX) || defined(MSDOS))
|
|
#ifndef __NetBSD__
|
|
#include <string.h>
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef __NetBSD__
|
|
#include <sys/systm.h>
|
|
#endif
|
|
|
|
#ifndef RAND
|
|
#define RAND
|
|
#endif
|
|
|
|
#ifdef linux
|
|
#undef RAND
|
|
#endif
|
|
|
|
#ifdef MSDOS
|
|
#define getpid() 2
|
|
#define RAND
|
|
#undef NOPROTO
|
|
#endif
|
|
|
|
#if defined(NOCONST)
|
|
#define const
|
|
#endif
|
|
|
|
#ifdef __STDC__
|
|
#undef NOPROTO
|
|
#endif
|
|
|
|
#ifdef RAND
|
|
#define srandom(s) srand(s)
|
|
#define random rand
|
|
#endif
|
|
|
|
#define ITERATIONS 16
|
|
#define HALF_ITERATIONS 8
|
|
|
|
/* used in des_read and des_write */
|
|
#define MAXWRITE (1024*16)
|
|
#define BSIZE (MAXWRITE+4)
|
|
|
|
#define c2l(c,l) (l =((DES_LONG)(*((c)++))) , \
|
|
l|=((DES_LONG)(*((c)++)))<< 8L, \
|
|
l|=((DES_LONG)(*((c)++)))<<16L, \
|
|
l|=((DES_LONG)(*((c)++)))<<24L)
|
|
|
|
/* NOTE - c is not incremented as per c2l */
|
|
#define c2ln(c,l1,l2,n) { \
|
|
c+=n; \
|
|
l1=l2=0; \
|
|
switch (n) { \
|
|
case 8: l2 =((DES_LONG)(*(--(c))))<<24L; \
|
|
case 7: l2|=((DES_LONG)(*(--(c))))<<16L; \
|
|
case 6: l2|=((DES_LONG)(*(--(c))))<< 8L; \
|
|
case 5: l2|=((DES_LONG)(*(--(c)))); \
|
|
case 4: l1 =((DES_LONG)(*(--(c))))<<24L; \
|
|
case 3: l1|=((DES_LONG)(*(--(c))))<<16L; \
|
|
case 2: l1|=((DES_LONG)(*(--(c))))<< 8L; \
|
|
case 1: l1|=((DES_LONG)(*(--(c)))); \
|
|
} \
|
|
}
|
|
|
|
#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
|
|
*((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
|
|
*((c)++)=(unsigned char)(((l)>>16L)&0xff), \
|
|
*((c)++)=(unsigned char)(((l)>>24L)&0xff))
|
|
|
|
/* replacements for htonl and ntohl since I have no idea what to do
|
|
* when faced with machines with 8 byte longs. */
|
|
#define HDRSIZE 4
|
|
|
|
#define n2l(c,l) (l =((DES_LONG)(*((c)++)))<<24L, \
|
|
l|=((DES_LONG)(*((c)++)))<<16L, \
|
|
l|=((DES_LONG)(*((c)++)))<< 8L, \
|
|
l|=((DES_LONG)(*((c)++))))
|
|
|
|
#define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
|
|
*((c)++)=(unsigned char)(((l)>>16L)&0xff), \
|
|
*((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
|
|
*((c)++)=(unsigned char)(((l) )&0xff))
|
|
|
|
/* NOTE - c is not incremented as per l2c */
|
|
#define l2cn(l1,l2,c,n) { \
|
|
c+=n; \
|
|
switch (n) { \
|
|
case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
|
|
case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
|
|
case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
|
|
case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
|
|
case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
|
|
case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
|
|
case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
|
|
case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
|
|
} \
|
|
}
|
|
|
|
#if defined(WIN32)
|
|
#define ROTATE(a,n) (_lrotr(a,n))
|
|
#else
|
|
#define ROTATE(a,n) (((a)>>(n))+((a)<<(32-(n))))
|
|
#endif
|
|
|
|
/* The changes to this macro may help or hinder, depending on the
|
|
* compiler and the achitecture. gcc2 always seems to do well :-).
|
|
* Inspired by Dana How <how@isl.stanford.edu>
|
|
* DO NOT use the alternative version on machines with 8 byte longs.
|
|
* It does not seem to work on the Alpha, even when DES_LONG is 4
|
|
* bytes, probably an issue of accessing non-word aligned objects :-( */
|
|
#ifdef DES_PTR
|
|
|
|
#define D_ENCRYPT(L,R,S) { \
|
|
u=((R^s[S ])<<2); \
|
|
t= R^s[S+1]; \
|
|
t=ROTATE(t,2); \
|
|
L^= (\
|
|
*(DES_LONG *)((unsigned char *)des_SP+0x100+((t )&0xfc))+ \
|
|
*(DES_LONG *)((unsigned char *)des_SP+0x300+((t>> 8)&0xfc))+ \
|
|
*(DES_LONG *)((unsigned char *)des_SP+0x500+((t>>16)&0xfc))+ \
|
|
*(DES_LONG *)((unsigned char *)des_SP+0x700+((t>>24)&0xfc))+ \
|
|
*(DES_LONG *)((unsigned char *)des_SP +((u )&0xfc))+ \
|
|
*(DES_LONG *)((unsigned char *)des_SP+0x200+((u>> 8)&0xfc))+ \
|
|
*(DES_LONG *)((unsigned char *)des_SP+0x400+((u>>16)&0xfc))+ \
|
|
*(DES_LONG *)((unsigned char *)des_SP+0x600+((u>>24)&0xfc))); }
|
|
#else /* original version */
|
|
#ifdef undef
|
|
#define D_ENCRYPT(L,R,S) \
|
|
U.l=R^s[S+1]; \
|
|
T.s[0]=((U.s[0]>>4)|(U.s[1]<<12))&0x3f3f; \
|
|
T.s[1]=((U.s[1]>>4)|(U.s[0]<<12))&0x3f3f; \
|
|
U.l=(R^s[S ])&0x3f3f3f3fL; \
|
|
L^= des_SPtrans[1][(T.c[0])]| \
|
|
des_SPtrans[3][(T.c[1])]| \
|
|
des_SPtrans[5][(T.c[2])]| \
|
|
des_SPtrans[7][(T.c[3])]| \
|
|
des_SPtrans[0][(U.c[0])]| \
|
|
des_SPtrans[2][(U.c[1])]| \
|
|
des_SPtrans[4][(U.c[2])]| \
|
|
des_SPtrans[6][(U.c[3])];
|
|
#else
|
|
#define D_ENCRYPT(Q,R,S) {\
|
|
u=(R^s[S ]); \
|
|
t=R^s[S+1]; \
|
|
t=ROTATE(t,4); \
|
|
Q^= des_SPtrans[1][(t )&0x3f]| \
|
|
des_SPtrans[3][(t>> 8L)&0x3f]| \
|
|
des_SPtrans[5][(t>>16L)&0x3f]| \
|
|
des_SPtrans[7][(t>>24L)&0x3f]| \
|
|
des_SPtrans[0][(u )&0x3f]| \
|
|
des_SPtrans[2][(u>> 8L)&0x3f]| \
|
|
des_SPtrans[4][(u>>16L)&0x3f]| \
|
|
des_SPtrans[6][(u>>24L)&0x3f]; }
|
|
#endif
|
|
#endif
|
|
|
|
/* IP and FP
|
|
* The problem is more of a geometric problem that random bit fiddling.
|
|
0 1 2 3 4 5 6 7 62 54 46 38 30 22 14 6
|
|
8 9 10 11 12 13 14 15 60 52 44 36 28 20 12 4
|
|
16 17 18 19 20 21 22 23 58 50 42 34 26 18 10 2
|
|
24 25 26 27 28 29 30 31 to 56 48 40 32 24 16 8 0
|
|
|
|
32 33 34 35 36 37 38 39 63 55 47 39 31 23 15 7
|
|
40 41 42 43 44 45 46 47 61 53 45 37 29 21 13 5
|
|
48 49 50 51 52 53 54 55 59 51 43 35 27 19 11 3
|
|
56 57 58 59 60 61 62 63 57 49 41 33 25 17 9 1
|
|
|
|
The output has been subject to swaps of the form
|
|
0 1 -> 3 1 but the odd and even bits have been put into
|
|
2 3 2 0
|
|
different words. The main trick is to remember that
|
|
t=((l>>size)^r)&(mask);
|
|
r^=t;
|
|
l^=(t<<size);
|
|
can be used to swap and move bits between words.
|
|
|
|
So l = 0 1 2 3 r = 16 17 18 19
|
|
4 5 6 7 20 21 22 23
|
|
8 9 10 11 24 25 26 27
|
|
12 13 14 15 28 29 30 31
|
|
becomes (for size == 2 and mask == 0x3333)
|
|
t = 2^16 3^17 -- -- l = 0 1 16 17 r = 2 3 18 19
|
|
6^20 7^21 -- -- 4 5 20 21 6 7 22 23
|
|
10^24 11^25 -- -- 8 9 24 25 10 11 24 25
|
|
14^28 15^29 -- -- 12 13 28 29 14 15 28 29
|
|
|
|
Thanks for hints from Richard Outerbridge - he told me IP&FP
|
|
could be done in 15 xor, 10 shifts and 5 ands.
|
|
When I finally started to think of the problem in 2D
|
|
I first got ~42 operations without xors. When I remembered
|
|
how to use xors :-) I got it to its final state.
|
|
*/
|
|
#define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
|
|
(b)^=(t),\
|
|
(a)^=((t)<<(n)))
|
|
|
|
#define IP(l,r) \
|
|
{ \
|
|
register DES_LONG tt; \
|
|
PERM_OP(r,l,tt, 4,0x0f0f0f0fL); \
|
|
PERM_OP(l,r,tt,16,0x0000ffffL); \
|
|
PERM_OP(r,l,tt, 2,0x33333333L); \
|
|
PERM_OP(l,r,tt, 8,0x00ff00ffL); \
|
|
PERM_OP(r,l,tt, 1,0x55555555L); \
|
|
}
|
|
|
|
#define FP(l,r) \
|
|
{ \
|
|
register DES_LONG tt; \
|
|
PERM_OP(l,r,tt, 1,0x55555555L); \
|
|
PERM_OP(r,l,tt, 8,0x00ff00ffL); \
|
|
PERM_OP(l,r,tt, 2,0x33333333L); \
|
|
PERM_OP(r,l,tt,16,0x0000ffffL); \
|
|
PERM_OP(l,r,tt, 4,0x0f0f0f0fL); \
|
|
}
|
|
#endif
|
|
|
|
|
|
/*
|
|
#define mbuf2char(i_mbuf, i_index, in) \
|
|
{ \
|
|
register int i; \
|
|
struct mbuf *m; \
|
|
char *buf; \
|
|
m = i_mbuf; \
|
|
for (i = 0; i < 8; i ++){ \
|
|
if (i_index + i == m->m_len){ \
|
|
m = m->m_next; \
|
|
} \
|
|
buf = mtod(m, char *); \
|
|
in[i] = *(buf + i); \
|
|
}
|
|
|
|
|
|
#define char2mbuf(o_mbuf, o_index, out) \
|
|
{ \
|
|
register int i; \
|
|
struct mbuf *m; \
|
|
char *buf; \
|
|
m = o_mbuf; \
|
|
for (i = 0; i < 8; i ++){ \
|
|
if (i_index + i == m->m_len){ \
|
|
m = m->m_next; \
|
|
} \
|
|
buf = mtod(m, char *); \
|
|
*(buf + i) = out[i]; \
|
|
}
|
|
*/
|
|
|