Mercurial > dropbear

annotate libtomcrypt/src/pk/katja/katja_import.c @ 1902:4a6725ac957c

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Revert "Don't include sk keys at all in KEX list" This reverts git commit f972813ecdc7bb981d25b5a63638bd158f1c8e72. The sk algorithms need to remain in the sigalgs list so that they are included in the server-sig-algs ext-info message sent by the server. RFC8308 for server-sig-algs requires that all algorithms are listed (though OpenSSH client 8.4p1 tested doesn't require that)
author Matt Johnston <matt@ucc.asn.au>
date Thu, 24 Mar 2022 13:42:08 +0800
parents 6dba84798cd5
children
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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 #include "tomcrypt.h"
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10
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11 /**
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12 @file katja_import.c
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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13 Import a PKCS-style Katja key, Tom St Denis
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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14 */
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15
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16 #ifdef LTC_MKAT
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17
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18 /**
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19 Import an KatjaPublicKey or KatjaPrivateKey [two-prime only, only support >= 1024-bit keys, defined in PKCS #1 v2.1]
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20 @param in The packet to import from
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21 @param inlen It's length (octets)
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22 @param key [out] Destination for newly imported key
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23 @return CRYPT_OK if successful, upon error allocated memory is freed
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24 */
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25 int katja_import(const unsigned char *in, unsigned long inlen, katja_key *key)
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26 {
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27 int err;
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28 void *zero;
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29
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30 LTC_ARGCHK(in != NULL);
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31 LTC_ARGCHK(key != NULL);
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32 LTC_ARGCHK(ltc_mp.name != NULL);
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33
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34 /* init key */
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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35 if ((err = mp_init_multi(&zero, &key->d, &key->N, &key->dQ,
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36 &key->dP, &key->qP, &key->p, &key->q, &key->pq, NULL)) != CRYPT_OK) {
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37 return err;
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38 }
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39
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6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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40 if ((err = der_decode_sequence_multi(in, inlen,
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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41 LTC_ASN1_INTEGER, 1UL, key->N,
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42 LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) {
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43 goto LBL_ERR;
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44 }
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45
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46 if (mp_cmp_d(key->N, 0) == LTC_MP_EQ) {
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47 /* it's a private key */
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48 if ((err = der_decode_sequence_multi(in, inlen,
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49 LTC_ASN1_INTEGER, 1UL, zero,
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50 LTC_ASN1_INTEGER, 1UL, key->N,
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51 LTC_ASN1_INTEGER, 1UL, key->d,
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52 LTC_ASN1_INTEGER, 1UL, key->p,
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53 LTC_ASN1_INTEGER, 1UL, key->q,
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54 LTC_ASN1_INTEGER, 1UL, key->dP,
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55 LTC_ASN1_INTEGER, 1UL, key->dQ,
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56 LTC_ASN1_INTEGER, 1UL, key->qP,
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57 LTC_ASN1_INTEGER, 1UL, key->pq,
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58 LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) {
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59 goto LBL_ERR;
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60 }
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61 key->type = PK_PRIVATE;
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62 } else {
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63 /* public we have N */
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64 key->type = PK_PUBLIC;
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65 }
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66 mp_clear(zero);
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67 return CRYPT_OK;
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68 LBL_ERR:
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69 mp_clear_multi(zero, key->d, key->N, key->dQ, key->dP,
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70 key->qP, key->p, key->q, key->pq, NULL);
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71 return err;
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72 }
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73
1435
f849a5ca2efc update to libtomcrypt 1.17 (with Dropbear changes)
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74 #endif /* LTC_MRSA */
382
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75
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76
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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77 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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78 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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79 /* commit time: $Format:%ai$ */