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annotate libtomcrypt/src/mac/blake2/blake2smac_memory_multi.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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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 #include <stdarg.h>
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12
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13 #ifdef LTC_BLAKE2SMAC
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14
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15 /**
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16 BLAKE2S MAC multiple blocks of memory to produce the authentication tag
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17 @param key The secret key
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18 @param keylen The length of the secret key (octets)
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19 @param mac [out] Destination of the authentication tag
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20 @param maclen [in/out] Max size and resulting size of authentication tag
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21 @param in The data to BLAKE2S MAC
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22 @param inlen The length of the data to BLAKE2S MAC (octets)
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23 @param ... tuples of (data,len) pairs to BLAKE2S MAC, terminated with a (NULL,x) (x=don't care)
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24 @return CRYPT_OK if successful
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25 */
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26 int blake2smac_memory_multi(const unsigned char *key, unsigned long keylen, unsigned char *mac, unsigned long *maclen, const unsigned char *in, unsigned long inlen, ...)
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27 {
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28 blake2smac_state st;
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29 int err;
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30 va_list args;
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31 const unsigned char *curptr;
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32 unsigned long curlen;
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33
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34 LTC_ARGCHK(key != NULL);
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35 LTC_ARGCHK(in != NULL);
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36 LTC_ARGCHK(mac != NULL);
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37 LTC_ARGCHK(maclen != NULL);
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38
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39 va_start(args, inlen);
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40 curptr = in;
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41 curlen = inlen;
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42 if ((err = blake2smac_init(&st, *maclen, key, keylen)) != CRYPT_OK) { goto LBL_ERR; }
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43 for (;;) {
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44 if ((err = blake2smac_process(&st, curptr, curlen)) != CRYPT_OK) { goto LBL_ERR; }
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45 curptr = va_arg(args, const unsigned char*);
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46 if (curptr == NULL) break;
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47 curlen = va_arg(args, unsigned long);
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48 }
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49 err = blake2smac_done(&st, mac, maclen);
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50 LBL_ERR:
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51 #ifdef LTC_CLEAN_STACK
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52 zeromem(&st, sizeof(blake2smac_state));
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53 #endif
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54 va_end(args);
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55 return err;
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56 }
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57
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58 #endif
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59
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60 /* ref: $Format:%D$ */
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61 /* git commit: $Format:%H$ */
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62 /* commit time: $Format:%ai$ */