Mercurial > dropbear

annotate libtomcrypt/src/math/ltm_desc.c @ 1562:768ebf737aa0 fuzz

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merge from main
author Matt Johnston <matt@ucc.asn.au>
date Wed, 28 Feb 2018 22:11:39 +0800
parents 6dba84798cd5
children 1051e4eea25a
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382
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diff changeset
1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 */
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9
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10 #define DESC_DEF_ONLY
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11 #include "tomcrypt.h"
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12
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13 #ifdef LTM_DESC
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14
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15 #include <tommath.h>
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16
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17 static const struct {
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18 int mpi_code, ltc_code;
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19 } mpi_to_ltc_codes[] = {
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20 { MP_OKAY , CRYPT_OK},
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21 { MP_MEM , CRYPT_MEM},
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22 { MP_VAL , CRYPT_INVALID_ARG},
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23 };
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24
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25 /**
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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26 Convert a MPI error to a LTC error (Possibly the most powerful function ever! Oh wait... no)
382
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27 @param err The error to convert
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28 @return The equivalent LTC error code or CRYPT_ERROR if none found
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29 */
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30 static int mpi_to_ltc_error(int err)
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31 {
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32 int x;
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33
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34 for (x = 0; x < (int)(sizeof(mpi_to_ltc_codes)/sizeof(mpi_to_ltc_codes[0])); x++) {
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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35 if (err == mpi_to_ltc_codes[x].mpi_code) {
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36 return mpi_to_ltc_codes[x].ltc_code;
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37 }
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38 }
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39 return CRYPT_ERROR;
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40 }
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41
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42 static int init(void **a)
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43 {
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44 int err;
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45
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46 LTC_ARGCHK(a != NULL);
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47
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48 *a = XCALLOC(1, sizeof(mp_int));
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49 if (*a == NULL) {
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50 return CRYPT_MEM;
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51 }
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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52
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53 if ((err = mpi_to_ltc_error(mp_init(*a))) != CRYPT_OK) {
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54 XFREE(*a);
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55 }
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56 return err;
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57 }
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58
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59 static void deinit(void *a)
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60 {
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61 LTC_ARGCHKVD(a != NULL);
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62 mp_clear(a);
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63 XFREE(a);
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64 }
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65
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66 static int neg(void *a, void *b)
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67 {
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68 LTC_ARGCHK(a != NULL);
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69 LTC_ARGCHK(b != NULL);
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70 return mpi_to_ltc_error(mp_neg(a, b));
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71 }
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72
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73 static int copy(void *a, void *b)