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annotate libtommath/bn_mp_clear.c @ 1671:5c8913b7464c

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Mention Ed25519 in dropbearkey man (#94)
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Mon, 25 May 2020 18:28:27 +0500
parents f52919ffd3b1
children 1051e4eea25a
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f52919ffd3b1 update ltm to 1.1.0 and enable FIPS 186.4 compliant key-generation (#79)
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1 #include "tommath_private.h"
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2 #include "dbhelpers.h"
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3 #ifdef BN_MP_CLEAR_C
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4 /* LibTomMath, multiple-precision integer library -- Tom St Denis
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5 *
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6 * LibTomMath is a library that provides multiple-precision
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7 * integer arithmetic as well as number theoretic functionality.
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8 *
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9 * The library was designed directly after the MPI library by
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10 * Michael Fromberger but has been written from scratch with
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11 * additional optimizations in place.
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12 *
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13 * SPDX-License-Identifier: Unlicense
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14 */
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16 /* clear one (frees) */
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17 void mp_clear(mp_int *a)
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18 {
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19 /* only do anything if a hasn't been freed previously */
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20 if (a->dp != NULL) {
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21 /* first zero the digits */
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22 m_burn(a->dp, (size_t)a->alloc * sizeof(*a->dp));
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24 /* free ram */
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25 XFREE(a->dp);
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27 /* reset members to make debugging easier */
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28 a->dp = NULL;
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29 a->alloc = a->used = 0;
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30 a->sign = MP_ZPOS;
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31 }
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32 }
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33 #endif
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35 /* ref: HEAD -> master, tag: v1.1.0 */
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36 /* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */
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37 /* commit time: 2019-01-28 20:32:32 +0100 */