Mercurial > dropbear

annotate libtommath/bn_mp_fwrite.c @ 1688:e01f9ec6d177

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Fix untested rsa-sha256 change to fuzzer-verify
author Matt Johnston <matt@ucc.asn.au>
date Tue, 26 May 2020 23:13:23 +0800
parents f52919ffd3b1
children 1051e4eea25a
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1 #include "tommath_private.h"
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2 #ifdef BN_MP_FWRITE_C
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3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
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4 *
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5 * LibTomMath is a library that provides multiple-precision
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6 * integer arithmetic as well as number theoretic functionality.
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7 *
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8 * The library was designed directly after the MPI library by
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9 * Michael Fromberger but has been written from scratch with
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10 * additional optimizations in place.
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11 *
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12 * SPDX-License-Identifier: Unlicense
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13 */
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14
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15 #ifndef LTM_NO_FILE
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16 int mp_fwrite(const mp_int *a, int radix, FILE *stream)
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17 {
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18 char *buf;
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19 int err, len, x;
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20
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21 if ((err = mp_radix_size(a, radix, &len)) != MP_OKAY) {
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22 return err;
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23 }
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24
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25 buf = OPT_CAST(char) XMALLOC((size_t)len);
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26 if (buf == NULL) {
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27 return MP_MEM;
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28 }
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29
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30 if ((err = mp_toradix(a, buf, radix)) != MP_OKAY) {
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31 XFREE(buf);
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32 return err;
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33 }
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34
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35 for (x = 0; x < len; x++) {
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36 if (fputc((int)buf[x], stream) == EOF) {
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37 XFREE(buf);
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38 return MP_VAL;
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39 }
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40 }
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41
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42 XFREE(buf);
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43 return MP_OKAY;
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44 }
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45 #endif
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46
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47 #endif
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48
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49 /* ref: HEAD -> master, tag: v1.1.0 */
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50 /* git commit: 08549ad6bc8b0cede0b357a9c341c5c6473a9c55 */
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51 /* commit time: 2019-01-28 20:32:32 +0100 */