222 lines
10 KiB
C
222 lines
10 KiB
C
|
/* crypto/bf/bf_locl.h */
|
||
|
|
/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This package is an SSL implementation written
|
||
|
|
* by Eric Young (eay@cryptsoft.com).
|
||
|
|
* 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@cryptsoft.com).
|
||
|
|
*
|
||
|
|
* 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@cryptsoft.com)"
|
||
|
|
* 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@cryptsoft.com)"
|
||
|
|
*
|
||
|
|
* 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.]
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef HEADER_BF_LOCL_H
|
||
|
|
# define HEADER_BF_LOCL_H
|
||
|
|
# include <openssl/opensslconf.h>/* BF_PTR, BF_PTR2 */
|
||
|
|
|
||
|
|
# undef c2l
|
||
|
|
# define c2l(c,l) (l =((unsigned long)(*((c)++))) , \
|
||
|
|
l|=((unsigned long)(*((c)++)))<< 8L, \
|
||
|
|
l|=((unsigned long)(*((c)++)))<<16L, \
|
||
|
|
l|=((unsigned 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 =((unsigned long)(*(--(c))))<<24L; \
|
||
|
|
case 7: l2|=((unsigned long)(*(--(c))))<<16L; \
|
||
|
|
case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \
|
||
|
|
case 5: l2|=((unsigned long)(*(--(c)))); \
|
||
|
|
case 4: l1 =((unsigned long)(*(--(c))))<<24L; \
|
||
|
|
case 3: l1|=((unsigned long)(*(--(c))))<<16L; \
|
||
|
|
case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \
|
||
|
|
case 1: l1|=((unsigned 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 =((unsigned long)(*(--(c)))) ; \
|
||
|
|
case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
|
||
|
|
case 6: l2|=((unsigned long)(*(--(c))))<<16; \
|
||
|
|
case 5: l2|=((unsigned long)(*(--(c))))<<24; \
|
||
|
|
case 4: l1 =((unsigned long)(*(--(c)))) ; \
|
||
|
|
case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
|
||
|
|
case 2: l1|=((unsigned long)(*(--(c))))<<16; \
|
||
|
|
case 1: l1|=((unsigned 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 =((unsigned long)(*((c)++)))<<24L, \
|
||
|
|
l|=((unsigned long)(*((c)++)))<<16L, \
|
||
|
|
l|=((unsigned long)(*((c)++)))<< 8L, \
|
||
|
|
l|=((unsigned 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 significant byte is used
|
||
|
|
* to lookup array 0
|
||
|
|
*/
|
||
|
|
|
||
|
|
# if defined(BF_PTR2)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This is basically a special Intel version. Point is that Intel
|
||
|
|
* doesn't have many registers, but offers a reach choice of addressing
|
||
|
|
* modes. So we spare some registers by directly traversing BF_KEY
|
||
|
|
* structure and hiring the most decorated addressing mode. The code
|
||
|
|
* generated by EGCS is *perfectly* competitive with assembler
|
||
|
|
* implementation!
|
||
|
|
*/
|
||
|
|
# define BF_ENC(LL,R,KEY,Pi) (\
|
||
|
|
LL^=KEY[Pi], \
|
||
|
|
t= KEY[BF_ROUNDS+2 + 0 + ((R>>24)&0xFF)], \
|
||
|
|
t+= KEY[BF_ROUNDS+2 + 256 + ((R>>16)&0xFF)], \
|
||
|
|
t^= KEY[BF_ROUNDS+2 + 512 + ((R>>8 )&0xFF)], \
|
||
|
|
t+= KEY[BF_ROUNDS+2 + 768 + ((R )&0xFF)], \
|
||
|
|
LL^=t \
|
||
|
|
)
|
||
|
|
|
||
|
|
# elif defined(BF_PTR)
|
||
|
|
|
||
|
|
# ifndef BF_LONG_LOG2
|
||
|
|
# define BF_LONG_LOG2 2 /* default to BF_LONG being 32 bits */
|
||
|
|
# endif
|
||
|
|
# define BF_M (0xFF<<BF_LONG_LOG2)
|
||
|
|
# define BF_0 (24-BF_LONG_LOG2)
|
||
|
|
# define BF_1 (16-BF_LONG_LOG2)
|
||
|
|
# define BF_2 ( 8-BF_LONG_LOG2)
|
||
|
|
# define BF_3 BF_LONG_LOG2 /* left shift */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This is normally very good on RISC platforms where normally you
|
||
|
|
* have to explicitly "multiply" array index by sizeof(BF_LONG)
|
||
|
|
* in order to calculate the effective address. This implementation
|
||
|
|
* excuses CPU from this extra work. Power[PC] uses should have most
|
||
|
|
* fun as (R>>BF_i)&BF_M gets folded into a single instruction, namely
|
||
|
|
* rlwinm. So let'em double-check if their compiler does it.
|
||
|
|
*/
|
||
|
|
|
||
|
|
# define BF_ENC(LL,R,S,P) ( \
|
||
|
|
LL^=P, \
|
||
|
|
LL^= (((*(BF_LONG *)((unsigned char *)&(S[ 0])+((R>>BF_0)&BF_M))+ \
|
||
|
|
*(BF_LONG *)((unsigned char *)&(S[256])+((R>>BF_1)&BF_M)))^ \
|
||
|
|
*(BF_LONG *)((unsigned char *)&(S[512])+((R>>BF_2)&BF_M)))+ \
|
||
|
|
*(BF_LONG *)((unsigned char *)&(S[768])+((R<<BF_3)&BF_M))) \
|
||
|
|
)
|
||
|
|
# else
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This is a *generic* version. Seem to perform best on platforms that
|
||
|
|
* offer explicit support for extraction of 8-bit nibbles preferably
|
||
|
|
* complemented with "multiplying" of array index by sizeof(BF_LONG).
|
||
|
|
* For the moment of this writing the list comprises Alpha CPU featuring
|
||
|
|
* extbl and s[48]addq instructions.
|
||
|
|
*/
|
||
|
|
|
||
|
|
# define BF_ENC(LL,R,S,P) ( \
|
||
|
|
LL^=P, \
|
||
|
|
LL^=((( S[ ((int)(R>>24)&0xff)] + \
|
||
|
|
S[0x0100+((int)(R>>16)&0xff)])^ \
|
||
|
|
S[0x0200+((int)(R>> 8)&0xff)])+ \
|
||
|
|
S[0x0300+((int)(R )&0xff)])&0xffffffffL \
|
||
|
|
)
|
||
|
|
# endif
|
||
|
|
|
||
|
|
#endif
|