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annotate libtomcrypt/src/pk/dsa/dsa_set_pqg_dsaparam.c @ 1665:7c17995bcdfb

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Improve address logging on early exit messages (#83) Change 'Early exit' and 'Exit before auth' messages to include the IP address & port as part of the message. This allows log scanning utilities such as 'fail2ban' to obtain the offending IP address as part of the failure event instead of extracting the PID from the message and then scanning the log again for match 'child connection from' messages Signed-off-by: Kevin Darbyshire-Bryant <[email protected]>
author Kevin Darbyshire-Bryant <6500011+ldir-EDB0@users.noreply.github.com>
date Wed, 18 Mar 2020 15:28:56 +0000
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 #include "tomcrypt.h"
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10
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11
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12 #ifdef LTC_MDSA
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13
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14 /**
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15 Import DSA's p, q & g from dsaparam
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16
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17 dsaparam data: openssl dsaparam -outform DER -out dsaparam.der 2048
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18
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19 @param dsaparam The DSA param DER encoded data
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20 @param dsaparamlen The length of dhparam data
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21 @param key [out] the destination for the imported key
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22 @return CRYPT_OK if successful.
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23 */
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24 int dsa_set_pqg_dsaparam(const unsigned char *dsaparam, unsigned long dsaparamlen,
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25 dsa_key *key)
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26 {
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27 int err, stat;
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28
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29 LTC_ARGCHK(dsaparam != NULL);
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30 LTC_ARGCHK(key != NULL);
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31 LTC_ARGCHK(ltc_mp.name != NULL);
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32
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33 /* init key */
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34 err = mp_init_multi(&key->p, &key->g, &key->q, &key->x, &key->y, NULL);
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35 if (err != CRYPT_OK) return err;
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36
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37 if ((err = der_decode_sequence_multi(dsaparam, dsaparamlen,
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38 LTC_ASN1_INTEGER, 1UL, key->p,
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39 LTC_ASN1_INTEGER, 1UL, key->q,
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40 LTC_ASN1_INTEGER, 1UL, key->g,
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41 LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) {
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42 goto LBL_ERR;
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43 }
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44
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45 key->qord = mp_unsigned_bin_size(key->q);
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46
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47 /* quick p, q, g validation, without primality testing */
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48 if ((err = dsa_int_validate_pqg(key, &stat)) != CRYPT_OK) {
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49 goto LBL_ERR;
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50 }
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51 if (stat == 0) {
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52 err = CRYPT_INVALID_PACKET;
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53 goto LBL_ERR;
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54 }
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55
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56 return CRYPT_OK;
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57
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58 LBL_ERR:
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59 dsa_free(key);
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60 return err;
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61 }
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62
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63 #endif
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64
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65 /* ref: $Format:%D$ */
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66 /* git commit: $Format:%H$ */
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67 /* commit time: $Format:%ai$ */