annotate libtomcrypt/src/encauth/ccm/ccm_reset.c @ 1499:2d450c1056e3

options: Complete the transition to numeric toggles (`#if') For the sake of review, this commit alters only the code; the affiliated comments within the source files also need to be updated, but doing so now would obscure the operational changes that have been made here. * All on/off options have been switched to the numeric `#if' variant; that is the only way to make this `default_options.h.in' thing work in a reasonable manner. * There is now some very minor compile-time checking of the user's choice of options. * NO_FAST_EXPTMOD doesn't seem to be used, so it has been removed. * ENABLE_USER_ALGO_LIST was supposed to be renamed DROPBEAR_USER_ALGO_LIST, and this commit completes that work. * DROPBEAR_FUZZ seems to be a relatively new, as-yet undocumented option, which was added by the following commit: commit 6e0b539e9ca0b5628c6c5a3d118ad6a2e79e8039 Author: Matt Johnston <[email protected]> Date: Tue May 23 22:29:21 2017 +0800 split out checkpubkey_line() separately It has now been added to `sysoptions.h' and defined as `0' by default. * The configuration option `DROPBEAR_PASSWORD_ENV' is no longer listed in `default_options.h.in'; it is no longer meant to be set by the user, and is instead left to be defined in `sysoptions.h' (where it was already being defined) as merely the name of the environment variable in question: DROPBEAR_PASSWORD To enable or disable use of that environment variable, the user must now toggle `DROPBEAR_USE_DROPBEAR_PASSWORD'. * The sFTP support is now toggled by setting `DROPBEAR_SFTPSERVER', and the path of the sFTP server program is set independently through the usual SFTPSERVER_PATH.
author Michael Witten <mfwitten@gmail.com>
date Thu, 20 Jul 2017 19:38:26 +0000
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 #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: $Format:%ai$ */