Mercurial > dropbear

annotate libtomcrypt/src/mac/f9/f9_init.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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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 f9_init.c
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13 F9 Support, start an F9 state
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14 */
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15
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16 #ifdef LTC_F9_MODE
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17
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18 /** Initialize F9-MAC state
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19 @param f9 [out] f9 state to initialize
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20 @param cipher Index of cipher to use
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21 @param key [in] Secret key
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22 @param keylen Length of secret key in octets
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23 Return CRYPT_OK on success
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24 */
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25 int f9_init(f9_state *f9, int cipher, const unsigned char *key, unsigned long keylen)
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26 {
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27 int x, err;
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28
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29 LTC_ARGCHK(f9 != NULL);
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30 LTC_ARGCHK(key != NULL);
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31
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32 /* schedule the key */
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33 if ((err = cipher_is_valid(cipher)) != CRYPT_OK) {
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34 return err;
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35 }
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36
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37 #ifdef LTC_FAST
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38 if (cipher_descriptor[cipher].block_length % sizeof(LTC_FAST_TYPE)) {
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39 return CRYPT_INVALID_ARG;
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40 }
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41 #endif
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42
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43 if ((err = cipher_descriptor[cipher].setup(key, keylen, 0, &f9->key)) != CRYPT_OK) {
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44 goto done;
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45 }
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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46
382
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47 /* make the second key */
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48 for (x = 0; (unsigned)x < keylen; x++) {
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49 f9->akey[x] = key[x] ^ 0xAA;
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50 }
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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51
382
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52 /* setup struct */
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53 zeromem(f9->IV, cipher_descriptor[cipher].block_length);
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54 zeromem(f9->ACC, cipher_descriptor[cipher].block_length);
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55 f9->blocksize = cipher_descriptor[cipher].block_length;
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56 f9->cipher = cipher;
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57 f9->buflen = 0;
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58 f9->keylen = keylen;
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59 done:
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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
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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65 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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diff changeset
66 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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67 /* commit time: $Format:%ai$ */
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68