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annotate libtomcrypt/src/mac/blake2/blake2smac_memory_multi.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 #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: $Format:%ai$ */