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comparison libtommath/bn_mp_init_size.c @ 1655:f52919ffd3b1

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update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79) * make key-generation compliant to FIPS 186.4 * fix includes in tommath_class.h * update fuzzcorpus instead of error-out * fixup fuzzing make-targets * update Makefile.in * apply necessary patches to ltm sources * clean-up not required ltm files * update to vanilla ltm 1.1.0 this already only contains the required files * remove set/get double
author Steffen Jaeckel <s_jaeckel@gmx.de>
date Mon, 16 Sep 2019 15:50:38 +0200
parents 8bba51a55704
children 1051e4eea25a
comparison
equal deleted inserted replaced
1654:cc0fc5131c5c 1655:f52919ffd3b1
1 #include <tommath_private.h> 1 #include "tommath_private.h"
2 #ifdef BN_MP_INIT_SIZE_C 2 #ifdef BN_MP_INIT_SIZE_C
3 /* LibTomMath, multiple-precision integer library -- Tom St Denis 3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
4 * 4 *
5 * LibTomMath is a library that provides multiple-precision 5 * LibTomMath is a library that provides multiple-precision
6 * integer arithmetic as well as number theoretic functionality. 6 * integer arithmetic as well as number theoretic functionality.
7 * 7 *
8 * The library was designed directly after the MPI library by 8 * The library was designed directly after the MPI library by
9 * Michael Fromberger but has been written from scratch with 9 * Michael Fromberger but has been written from scratch with
10 * additional optimizations in place. 10 * additional optimizations in place.
11 * 11 *
12 * The library is free for all purposes without any express 12 * SPDX-License-Identifier: Unlicense
13 * guarantee it works.
14 *
15 * Tom St Denis, [email protected], http://libtom.org
16 */ 13 */
17 14
18 /* init an mp_init for a given size */ 15 /* init an mp_init for a given size */
19 int mp_init_size (mp_int * a, int size) 16 int mp_init_size(mp_int *a, int size)
20 { 17 {
21 int x; 18 int x;
22 19
23 /* pad size so there are always extra digits */ 20 /* pad size so there are always extra digits */
24 size += (MP_PREC * 2) - (size % MP_PREC); 21 size += (MP_PREC * 2) - (size % MP_PREC);
25
26 /* alloc mem */
27 a->dp = OPT_CAST(mp_digit) XMALLOC (sizeof (mp_digit) * size);
28 if (a->dp == NULL) {
29 return MP_MEM;
30 }
31 22
32 /* set the members */ 23 /* alloc mem */
33 a->used = 0; 24 a->dp = OPT_CAST(mp_digit) XMALLOC(sizeof(mp_digit) * (size_t)size);
34 a->alloc = size; 25 if (a->dp == NULL) {
35 a->sign = MP_ZPOS; 26 return MP_MEM;
27 }
36 28
37 /* zero the digits */ 29 /* set the members */
38 for (x = 0; x < size; x++) { 30 a->used = 0;
31 a->alloc = size;
32 a->sign = MP_ZPOS;
33
34 /* zero the digits */
35 for (x = 0; x < size; x++) {
39 a->dp[x] = 0; 36 a->dp[x] = 0;
40 } 37 }
41 38
42 return MP_OKAY; 39 return MP_OKAY;
43 } 40 }
44 #endif 41 #endif
45 42
46 /* ref: $Format:%D$ */ 43 /* ref: HEAD -> master, tag: v1.1.0 */
47 /* git commit: $Format:%H$ */ 44 /* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */
48 /* commit time: $Format:%ai$ */ 45 /* commit time: 2019-01-28 20:32:32 +0100 */