Mercurial > dropbear

annotate libtomcrypt/src/misc/crypt/crypt_unregister_prng.c @ 1471:6dba84798cd5

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Update to libtomcrypt 1.18.1, merged with Dropbear changes
author Matt Johnston <matt@ucc.asn.au>
date Fri, 09 Feb 2018 21:44:05 +0800
parents f849a5ca2efc
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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11 /**
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12 @file crypt_unregister_prng.c
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13 Unregister a PRNG, Tom St Denis
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14 */
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16 /**
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17 Unregister a PRNG from the descriptor table
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18 @param prng The PRNG descriptor to remove
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19 @return CRYPT_OK on success
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20 */
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21 int unregister_prng(const struct ltc_prng_descriptor *prng)
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22 {
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23 int x;
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25 LTC_ARGCHK(prng != NULL);
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27 /* is it already registered? */
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28 LTC_MUTEX_LOCK(&ltc_prng_mutex);
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29 for (x = 0; x < TAB_SIZE; x++) {
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30 if (XMEMCMP(&prng_descriptor[x], prng, sizeof(struct ltc_prng_descriptor)) == 0) {
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31 prng_descriptor[x].name = NULL;
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32 LTC_MUTEX_UNLOCK(&ltc_prng_mutex);
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33 return CRYPT_OK;
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34 }
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35 }
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36 LTC_MUTEX_UNLOCK(&ltc_prng_mutex);
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37 return CRYPT_ERROR;
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38 }
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39
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40 /* ref: $Format:%D$ */
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41 /* git commit: $Format:%H$ */
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42 /* commit time: $Format:%ai$ */