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annotate libtomcrypt/src/encauth/ccm/ccm_process.c @ 1935:a7ad060707b6

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Allow dbclient -J to be used with multihop Based on a patch from Hans Harder. This also tidies formatting and un-needed parts
author Matt Johnston <matt@ucc.asn.au>
date Fri, 01 Apr 2022 12:17:02 +0800
parents 6dba84798cd5
children
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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 #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 Process plaintext/ciphertext through CCM
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15 @param ccm The CCM state
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16 @param pt The plaintext
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17 @param ptlen The plaintext length (ciphertext length is the same)
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18 @param ct The ciphertext
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19 @param direction Encrypt or Decrypt mode (CCM_ENCRYPT or CCM_DECRYPT)
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20 @return CRYPT_OK on success
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21 */
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22 int ccm_process(ccm_state *ccm,
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23 unsigned char *pt, unsigned long ptlen,
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24 unsigned char *ct,
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25 int direction)
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26 {
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27 unsigned char z, b;
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28 unsigned long y;
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29 int err;
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30
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31 LTC_ARGCHK(ccm != NULL);
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32
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33 /* Check aad has been correctly added */
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34 if (ccm->aadlen != ccm->current_aadlen) {
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35 return CRYPT_ERROR;
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