/* crypto/bn/bn_lcl.h */ /* Copyright (C) 1995-1998 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_BN_LCL_H #define HEADER_BN_LCL_H #include "bn.h" #ifdef __cplusplus extern "C" { #endif /* Pentium pro 16,16,16,32,64 */ /* Alpha 16,16,16,16.64 */ #define BN_MULL_SIZE_NORMAL (16) // 32 #define BN_MUL_RECURSIVE_SIZE_NORMAL (16) // 32 /* less than */ #define BN_SQR_RECURSIVE_SIZE_NORMAL (16) // 32 #define BN_MUL_LOW_RECURSIVE_SIZE_NORMAL (32) // 32 #define BN_MONT_CTX_SET_SIZE_WORD (64) // 32 #ifndef BN_MUL_COMBA #define bn_mul_comba8(r,a,b) bn_mul_normal(r,a,8,b,8) #define bn_mul_comba4(r,a,b) bn_mul_normal(r,a,4,b,4) /* This is probably faster than using the C code - I need to check */ #define bn_sqr_comba8(r,a) bn_mul_normal(r,a,8,a,8) #define bn_sqr_comba4(r,a) bn_mul_normal(r,a,4,a,4) #endif /************************************************************* * Using the long long type */ #define Lw(t) (((BN_ULONG)(t))&BN_MASK2) #define Hw(t) (((BN_ULONG)((t)>>BN_BITS2))&BN_MASK2) /* These are used for internal error checking and are not normally used */ #ifdef BN_DEBUG #define bn_check_top(a) \ { if (((a)->top < 0) || ((a)->top > (a)->max)) \ { char *nullp=NULL; *nullp='z'; } } #define bn_check_num(a) if ((a) < 0) { char *nullp=NULL; *nullp='z'; } #else #define bn_check_top(a) #define bn_check_num(a) #endif /* This macro is to add extra stuff for development checking */ #ifdef BN_DEBUG #define bn_set_max(r) ((r)->max=(r)->top,BN_set_flags((r),BN_FLG_STATIC_DATA)) #else #define bn_set_max(r) #endif /* These macros are used to 'take' a section of a bignum for read only use */ #define bn_set_low(r,a,n) \ { \ (r)->top=((a)->top > (n))?(n):(a)->top; \ (r)->d=(a)->d; \ (r)->neg=(a)->neg; \ (r)->flags|=BN_FLG_STATIC_DATA; \ bn_set_max(r); \ } #define bn_set_high(r,a,n) \ { \ if ((a)->top > (n)) \ { \ (r)->top=(a)->top-n; \ (r)->d= &((a)->d[n]); \ } \ else \ (r)->top=0; \ (r)->neg=(a)->neg; \ (r)->flags|=BN_FLG_STATIC_DATA; \ bn_set_max(r); \ } /* #define bn_expand(n,b) ((((b)/BN_BITS2) <= (n)->max)?(n):bn_expand2((n),(b))) */ #ifdef BN_LLONG #define mul_add(r,a,w,c) { \ BN_ULLONG t; \ t=(BN_ULLONG)w * (a) + (r) + (c); \ (r)= Lw(t); \ (c)= Hw(t); \ } #define mul(r,a,w,c) { \ BN_ULLONG t; \ t=(BN_ULLONG)w * (a) + (c); \ (r)= Lw(t); \ (c)= Hw(t); \ } #else /************************************************************* * No long long type */ #define LBITS(a) ((a)&BN_MASK2l) #define HBITS(a) (((a)>>BN_BITS4)&BN_MASK2l) #define L2HBITS(a) ((BN_ULONG)((a)&BN_MASK2l)<>BN_BITS2)&BN_MASKl) #define LL2HBITS(a) ((BN_ULLONG)((a)&BN_MASKl)<>(BN_BITS4-1); \ m =(m&BN_MASK2l)<<(BN_BITS4+1); \ l=(l+m)&BN_MASK2; if (l < m) h++; \ (lo)=l; \ (ho)=h; \ } #define mul_add(r,a,bl,bh,c) { \ BN_ULONG l,h; \ \ h= (a); \ l=LBITS(h); \ h=HBITS(h); \ mul64(l,h,(bl),(bh)); \ \ /* non-multiply part */ \ l=(l+(c))&BN_MASK2; if (l < (c)) h++; \ (c)=(r); \ l=(l+(c))&BN_MASK2; if (l < (c)) h++; \ (c)=h&BN_MASK2; \ (r)=l; \ } #define mul(r,a,bl,bh,c) { \ BN_ULONG l,h; \ \ h= (a); \ l=LBITS(h); \ h=HBITS(h); \ mul64(l,h,(bl),(bh)); \ \ /* non-multiply part */ \ l+=(c); if ((l&BN_MASK2) < (c)) h++; \ (c)=h&BN_MASK2; \ (r)=l&BN_MASK2; \ } #endif extern int bn_limit_bits; extern int bn_limit_num; /* (1<