Mercurial > dropbear

annotate libtomcrypt/src/mac/blake2/blake2smac_memory_multi.c @ 1629:258b57b208ae

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Fix for issue successfull login of disabled user (#78) This commit introduces fix for scenario: 1. Root login disabled on dropbear 2. PAM authentication model enabled While login as root user, after prompt for password user is being notified about login failrue, but after second attempt of prompt for password within same session, login becames succesfull. Signed-off-by: Pawel Rapkiewicz <[email protected]>
author vincentto13 <33652988+vincentto13@users.noreply.github.com>
date Wed, 20 Mar 2019 15:03:40 +0100
parents 6dba84798cd5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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: $Format:%ai$ */