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Diffstat (limited to 'crypto/bn/bn_m.c')
| -rw-r--r-- | crypto/bn/bn_m.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/crypto/bn/bn_m.c b/crypto/bn/bn_m.c deleted file mode 100644 index 5166daaeec..0000000000 --- a/crypto/bn/bn_m.c +++ /dev/null @@ -1,169 +0,0 @@ -/* crypto/bn/bn_m.c */ -/* 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.] - */ - -#include <stdio.h> -#include "cryptlib.h" -#include "bn_lcl.h" -#include "stack.h" - -int limit=16; - -typedef struct bn_pool_st - { - int used; - int tos; - STACK *sk; - } BN_POOL; - -BIGNUM *BN_POOL_push(bp) -BN_POOL *bp; - { - BIGNUM *ret; - - if (bp->used >= bp->tos) - { - ret=BN_new(); - sk_push(bp->sk,(char *)ret); - bp->tos++; - bp->used++; - } - else - { - ret=(BIGNUM *)sk_value(bp->sk,bp->used); - bp->used++; - } - return(ret); - } - -void BN_POOL_pop(bp,num) -BN_POOL *bp; -int num; - { - bp->used-=num; - } - -int BN_m(r,a,b) -BIGNUM *r,*a,*b; - { - static BN_POOL bp; - static init=1; - - if (init) - { - bp.used=0; - bp.tos=0; - bp.sk=sk_new_null(); - init=0; - } - return(BN_mm(r,a,b,&bp)); - } - -/* r must be different to a and b */ -int BN_mm(m, A, B, bp) -BIGNUM *m,*A,*B; -BN_POOL *bp; - { - int i,num; - int an,bn; - BIGNUM *a,*b,*c,*d,*ac,*bd; - - an=A->top; - bn=B->top; - if ((an <= limit) || (bn <= limit)) - { - return(BN_mul(m,A,B)); - } - - a=BN_POOL_push(bp); - b=BN_POOL_push(bp); - c=BN_POOL_push(bp); - d=BN_POOL_push(bp); - ac=BN_POOL_push(bp); - bd=BN_POOL_push(bp); - - num=(an <= bn)?an:bn; - num=1<<(BN_num_bits_word(num-1)-1); - - /* Are going to now chop things into 'num' word chunks. */ - num*=BN_BITS2; - - BN_copy(a,A); - BN_mask_bits(a,num); - BN_rshift(b,A,num); - - BN_copy(c,B); - BN_mask_bits(c,num); - BN_rshift(d,B,num); - - BN_sub(ac ,b,a); - BN_sub(bd,c,d); - BN_mm(m,ac,bd,bp); - BN_mm(ac,a,c,bp); - BN_mm(bd,b,d,bp); - - BN_add(m,m,ac); - BN_add(m,m,bd); - BN_lshift(m,m,num); - BN_lshift(bd,bd,num*2); - - BN_add(m,m,ac); - BN_add(m,m,bd); - BN_POOL_pop(bp,6); - return(1); - } - |