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NetBSD/sys/crypto/blowfish/bf_locl.h

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/* $NetBSD: bf_locl.h,v 1.5 2009/06/30 13:14:40 pooka Exp $ */
/* $KAME: bf_locl.h,v 1.5 2000/08/31 06:03:48 itojun Exp $ */
/* crypto/bf/bf_local.h */
/* Copyright (C) 1995-1997 Eric Young (eay@mincom.oz.au)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@mincom.oz.au).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@mincom.oz.au).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library 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 cryptographic software written by
* Eric Young (eay@mincom.oz.au)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@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.]
*/
/* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
*
* Always modify bf_locl.org since bf_locl.h is automatically generated from
* it during SSLeay configuration.
*
* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
*/
#undef c2l
#define c2l(c,l) (l =((BF_LONG)(*((c)++))) , \
l|=((BF_LONG)(*((c)++)))<< 8L, \
l|=((BF_LONG)(*((c)++)))<<16L, \
l|=((BF_LONG)(*((c)++)))<<24L)
/* NOTE - c is not incremented as per c2l */
#undef c2ln
#define c2ln(c,l1,l2,n) { \
c+=n; \
l1=l2=0; \
switch (n) { \
case 8: l2 =((BF_LONG)(*(--(c))))<<24L; \
case 7: l2|=((BF_LONG)(*(--(c))))<<16L; \
case 6: l2|=((BF_LONG)(*(--(c))))<< 8L; \
case 5: l2|=((BF_LONG)(*(--(c)))); \
case 4: l1 =((BF_LONG)(*(--(c))))<<24L; \
case 3: l1|=((BF_LONG)(*(--(c))))<<16L; \
case 2: l1|=((BF_LONG)(*(--(c))))<< 8L; \
case 1: l1|=((BF_LONG)(*(--(c)))); \
} \
}
#undef l2c
#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))
/* NOTE - c is not incremented as per l2c */
#undef l2cn
#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); \
} \
}
/* NOTE - c is not incremented as per n2l */
#define n2ln(c,l1,l2,n) { \
c+=n; \
l1=l2=0; \
switch (n) { \
case 8: l2 =((BF_LONG)(*(--(c)))) ; \
case 7: l2|=((BF_LONG)(*(--(c))))<< 8; \
case 6: l2|=((BF_LONG)(*(--(c))))<<16; \
case 5: l2|=((BF_LONG)(*(--(c))))<<24; \
case 4: l1 =((BF_LONG)(*(--(c)))) ; \
case 3: l1|=((BF_LONG)(*(--(c))))<< 8; \
case 2: l1|=((BF_LONG)(*(--(c))))<<16; \
case 1: l1|=((BF_LONG)(*(--(c))))<<24; \
} \
}
/* NOTE - c is not incremented as per l2n */
#define l2nn(l1,l2,c,n) { \
c+=n; \
switch (n) { \
case 8: *(--(c))=(unsigned char)(((l2) )&0xff); \
case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
case 4: *(--(c))=(unsigned char)(((l1) )&0xff); \
case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
} \
}
#undef n2l
#define n2l(c,l) (l =((BF_LONG)(*((c)++)))<<24L, \
l|=((BF_LONG)(*((c)++)))<<16L, \
l|=((BF_LONG)(*((c)++)))<< 8L, \
l|=((BF_LONG)(*((c)++))))
#undef l2n
#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))
/* This is actually a big endian algorithm, the most significate byte
* is used to lookup array 0 */
/* use BF_PTR2 for intel boxes,
* BF_PTR for sparc and MIPS/SGI
* use nothing for Alpha and HP.
*/
#undef BF_PTR
#undef BF_PTR2
#ifdef __i386__
#define BF_PTR2
#else
#ifdef __mips__
#define BF_PTR
#endif
#endif
#define BF_M 0x3fc
#define BF_0 22L
#define BF_1 14L
#define BF_2 6L
#define BF_3 2L /* left shift */
#if defined(BF_PTR2)
/* This is basically a special pentium verson */
#define BF_ENC(LL,R,S,P) \
{ \
BF_LONG t,u,v; \
u=R>>BF_0; \
v=R>>BF_1; \
u&=BF_M; \
v&=BF_M; \
t= *(const BF_LONG *)((const unsigned char *)&(S[ 0])+u); \
u=R>>BF_2; \
t+= *(const BF_LONG *)((const unsigned char *)&(S[256])+v); \
v=R<<BF_3; \
u&=BF_M; \
v&=BF_M; \
t^= *(const BF_LONG *)((const unsigned char *)&(S[512])+u); \
LL^=P; \
t+= *(const BF_LONG *)((const unsigned char *)&(S[768])+v); \
LL^=t; \
}
#elif defined(BF_PTR)
/* This is normally very good */
#define BF_ENC(LL,R,S,P) \
LL^=P; \
LL^= (((*(const BF_LONG *)((const unsigned char *)&(S[ 0])+((R>>BF_0)&BF_M))+ \
*(const BF_LONG *)((const unsigned char *)&(S[256])+((R>>BF_1)&BF_M)))^ \
*(const BF_LONG *)((const unsigned char *)&(S[512])+((R>>BF_2)&BF_M)))+ \
*(const BF_LONG *)((const unsigned char *)&(S[768])+((R<<BF_3)&BF_M)));
#else
/* This will always work, even on 64 bit machines and strangly enough,
* on the Alpha it is faster than the pointer versions (both 32 and 64
* versions of BF_LONG) */
#define BF_ENC(LL,R,S,P) \
LL^=P; \
LL^=((( S[ (R>>24L) ] + \
S[0x0100+((R>>16L)&0xff)])^ \
S[0x0200+((R>> 8L)&0xff)])+ \
S[0x0300+((R )&0xff)])&0xffffffff;
#endif
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