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annotate libtomcrypt/src/pk/dh/dh_set_pg_dhparam.c @ 1659:d32bcb5c557d

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Add Ed25519 support (#91) * Add support for Ed25519 as a public key type Ed25519 is a elliptic curve signature scheme that offers better security than ECDSA and DSA and good performance. It may be used for both user and host keys. OpenSSH key import and fuzzer are not supported yet. Initially inspired by Peter Szabo. * Add curve25519 and ed25519 fuzzers * Add import and export of Ed25519 keys
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Wed, 11 Mar 2020 21:09:45 +0500
parents 6dba84798cd5
children
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rev   line source
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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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 #include "tomcrypt.h"
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11
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12 #ifdef LTC_MDH
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13
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14 /**
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15 Import DH key parts p and g from dhparam
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16
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17 dhparam data: openssl dhparam -outform DER -out dhparam.der 2048
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18
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19 @param dhparam The DH param DER encoded data
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20 @param dhparamlen The length of dhparam data
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21 @param key [out] Where the newly created DH key will be stored
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22 @return CRYPT_OK if successful, note: on error all allocated memory will be freed automatically.
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23 */
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24 int dh_set_pg_dhparam(const unsigned char *dhparam, unsigned long dhparamlen, dh_key *key)
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25 {
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26 int err;
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27
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28 LTC_ARGCHK(key != NULL);
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29 LTC_ARGCHK(ltc_mp.name != NULL);
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30 LTC_ARGCHK(dhparam != NULL);
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31 LTC_ARGCHK(dhparamlen > 0);
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32
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33 if ((err = mp_init_multi(&key->x, &key->y, &key->base, &key->prime, NULL)) != CRYPT_OK) {
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34 return err;
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35 }
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36 if ((err = der_decode_sequence_multi(dhparam, dhparamlen,
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37 LTC_ASN1_INTEGER, 1UL, key->prime,
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38 LTC_ASN1_INTEGER, 1UL, key->base,
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39 LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) {
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40 goto LBL_ERR;
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41 }
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42
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43 return CRYPT_OK;
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44
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45 LBL_ERR:
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46 dh_free(key);
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47 return err;
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48 }
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49
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50 #endif /* LTC_MDH */
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51
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52 /* ref: $Format:%D$ */
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53 /* git commit: $Format:%H$ */
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54 /* commit time: $Format:%ai$ */