dropbear: bignum.c annotate

annotate bignum.c @ 645:8622ee48fab5 dropbear-tfm

- Work around broken asm constraint behaviour on 32bit x86 OS X

author	Matt Johnston <matt@ucc.asn.au>
date	Wed, 30 Nov 2011 22:27:26 +0800
parents	2b1bb792cd4d
children

rev	line source
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1 /*
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	2 * Dropbear - a SSH2 server
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	3 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	4 * Copyright (c) 2002,2003 Matt Johnston
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	5 * All rights reserved.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	6 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	7 * Permission is hereby granted, free of charge, to any person obtaining a copy
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	8 * of this software and associated documentation files (the "Software"), to deal
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	9 * in the Software without restriction, including without limitation the rights
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	11 * copies of the Software, and to permit persons to whom the Software is
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	12 * furnished to do so, subject to the following conditions:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	13 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	14 * The above copyright notice and this permission notice shall be included in
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	15 * all copies or substantial portions of the Software.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	16 *
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	23 * SOFTWARE. */
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	24
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	25 /* Contains helper functions for fp_int handling */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	26
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	27 #include "includes.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	28 #include "dbutil.h"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	29
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	30 /* wrapper for fp_init, failing fatally on errors (memory allocation) */
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	31 void m_fp_init(fp_int *fp) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	32
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	33 fp_init(fp);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	34 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	35
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	36 /* simplified duplication of bn_fp_multi's fp_init_multi, but die fatally
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	37 * on error */
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	38 void m_fp_init_multi(fp_int *fp, ...)
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	39 {
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	40 fp_int* cur_arg = fp;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	41 va_list args;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	42
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	43 va_start(args, fp); /* init args to next argument from caller */
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	44 while (cur_arg != NULL) {
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	45 fp_init(cur_arg);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	46 cur_arg = va_arg(args, fp_int*);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	47 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	48 va_end(args);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	49 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	50
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	51 /* simplified duplication of bn_fp_multi's fp_init_multi, but die fatally
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	52 * on error */
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	53 void m_fp_zero_multi(fp_int *fp, ...)
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	54 {
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	55 fp_int* cur_arg = fp;
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	56 va_list args;
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	57
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	58 va_start(args, fp); /* init args to next argument from caller */
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	59 while (cur_arg != NULL) {
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	60 fp_zero(cur_arg);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	61 cur_arg = va_arg(args, fp_int*);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	62 }
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	63 va_end(args);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	64 }
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	65
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	66 void bytes_to_fp(fp_int fp, const unsigned char bytes, unsigned int len) {
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	67
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	68 fp_read_unsigned_bin(fp, (unsigned char*)bytes, len);
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	69 }
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	70
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	71 /* hash the ssh representation of the fp_int fp */
76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	72 void sha1_process_fp(hash_state hs, fp_int fp) {
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	73
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	74 int i;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	75 buffer * buf;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	76
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	77 buf = buf_new(512 + 20); /* max buffer is a 4096 bit key,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	78 plus header + some leeway*/
640 76097ec1a29a - Bring in original tomsfastmath patch against 0.52 from Peter Turczak Matt Johnston <matt@ucc.asn.au> parents: 188 diff changeset	79 buf_putfpint(buf, fp);
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	80 i = buf->pos;
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	81 buf_setpos(buf, 0);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	82 sha1_process(hs, buf_getptr(buf, i), i);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	83 buf_free(buf);
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	84 }

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annotate bignum.c @ 645:8622ee48fab5 dropbear-tfm