Mercurial > dropbear

annotate libtomcrypt/src/modes/lrw/lrw_getiv.c @ 1724:ca75bb513359

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_GNU_SOURCE for random
author Matt Johnston <matt@ucc.asn.au>
date Tue, 23 Jun 2020 21:38:46 +0800
parents 6dba84798cd5
children
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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 lrw_getiv.c
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13 LRW_MODE implementation, Retrieve the current IV, Tom St Denis
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14 */
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15
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16 #ifdef LTC_LRW_MODE
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17
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18 /**
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19 Get the IV for LRW
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20 @param IV [out] The IV, must be 16 octets
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21 @param len Length ... must be at least 16 :-)
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22 @param lrw The LRW state to read
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23 @return CRYPT_OK if successful
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24 */
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25 int lrw_getiv(unsigned char *IV, unsigned long *len, symmetric_LRW *lrw)
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26 {
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27 LTC_ARGCHK(IV != NULL);
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28 LTC_ARGCHK(len != NULL);
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29 LTC_ARGCHK(lrw != NULL);
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30 if (*len < 16) {
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31 *len = 16;
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32 return CRYPT_BUFFER_OVERFLOW;
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33 }
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34
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35 XMEMCPY(IV, lrw->IV, 16);
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36 *len = 16;
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37 return CRYPT_OK;
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38 }
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39
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40 #endif
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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41 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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42 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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43 /* commit time: $Format:%ai$ */