-/* crypto/bf/bf_locl.org */
+/* 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:
* 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
+ * 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
* 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
- */
+#ifndef HEADER_BF_LOCL_H
+# define HEADER_BF_LOCL_H
+# include <openssl/opensslconf.h>
+# include "internal/bf_conf.h"
-/* Special defines which change the way the code is built depending on the
- CPU and OS. For SGI machines you can use _MIPS_SZLONG (32 or 64) to find
- even newer MIPS CPU's, but at the moment one size fits all for
- optimization options. Older Sparc's work better with only UNROLL, but
- there's no way to tell at compile time what it is you're running on */
-
-#if defined( sun ) /* Newer Sparc's */
-# define BF_PTR
-#elif defined( __ultrix ) /* Older MIPS */
-# define BF_PTR
-#elif defined( __osf1__ ) /* Alpha */
- /* None */
-#elif defined ( _AIX ) /* RS6000 */
- /* Unknown */
-#elif defined( __hpux ) /* HP-PA */
- /* None */
-#elif defined( __aux ) /* 68K */
- /* Unknown */
-#elif defined( __dgux ) /* 88K (but P6 in latest boxes) */
- /* Unknown */
-#elif defined( __sgi ) /* Newer MIPS */
-# define BF_PTR
-#elif defined( i386 ) /* x86 boxes, should be gcc */
-#elif defined( _MSC_VER ) /* x86 boxes, Visual C */
-#endif /* Systems-specific speed defines */
-
-#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)
+# 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))
+# 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); \
- } \
- }
+# 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; \
- } \
- }
+# 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, \
+# 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), \
+# 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 */
+/*
+ * This is actually a big endian algorithm, the most significant 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.
+# 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!
*/
-#if !defined(BF_PTR) && !defined(BF_PTR2)
-#undef BF_PTR
-#endif
+# 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
-#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= *(BF_LONG *)((unsigned char *)&(S[ 0])+u); \
- u=R>>BF_2; \
- t+= *(BF_LONG *)((unsigned char *)&(S[256])+v); \
- v=R<<BF_3; \
- u&=BF_M; \
- v&=BF_M; \
- t^= *(BF_LONG *)((unsigned char *)&(S[512])+u); \
- LL^=P; \
- t+= *(BF_LONG *)((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^= (((*(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 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[ (int)(R>>24L) ] + \
- S[0x0100+((int)(R>>16L)&0xff)])^ \
- S[0x0200+((int)(R>> 8L)&0xff)])+ \
- S[0x0300+((int)(R )&0xff)])&0xffffffffL;
#endif
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