Mercurial > dropbear

annotate libtomcrypt/src/encauth/ccm/ccm_reset.c @ 1861:2b3a8026a6ce

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Add re-exec for server This allows ASLR to re-randomize the address space for every connection, preventing some vulnerabilities from being exploitable by repeated probing. Overhead (memory and time) is yet to be confirmed. At present this is only enabled on Linux. Other BSD platforms with fexecve() would probably also work though have not been tested.
author Matt Johnston <matt@ucc.asn.au>
date Sun, 30 Jan 2022 10:14:56 +0800
parents 6dba84798cd5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 #include "tomcrypt.h"
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10
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11 #ifdef LTC_CCM_MODE
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12
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13 /**
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14 Reset a CCM state to as if you just called ccm_init(). This saves the initialization time.
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15 @param ccm The CCM state to reset
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16 @return CRYPT_OK on success
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17 */
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18 int ccm_reset(ccm_state *ccm)
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19 {
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20 LTC_ARGCHK(ccm != NULL);
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21 zeromem(ccm->PAD, sizeof(ccm->PAD));
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22 zeromem(ccm->ctr, sizeof(ccm->ctr));
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23 zeromem(ccm->CTRPAD, sizeof(ccm->CTRPAD));
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24 ccm->CTRlen = 0;
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25 ccm->current_ptlen = 0;
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26 ccm->current_aadlen = 0;
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27
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28 return CRYPT_OK;
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29 }
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30
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31 #endif
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32
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33 /* ref: $Format:%D$ */
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34 /* git commit: $Format:%H$ */
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35 /* commit time: $Format:%ai$ */