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annotate eax_encrypt_authenticate_memory.c @ 18:712dd6dfb0eb libtomcrypt

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makefile
author Matt Johnston <matt@ucc.asn.au>
date Tue, 15 Jun 2004 14:34:07 +0000
parents d7da3b1e1540
children 5d99163f7e32
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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 * Tom St Denis, [email protected], http://libtomcrypt.org
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10 */
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11
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12 /* EAX Implementation by Tom St Denis */
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13 #include "mycrypt.h"
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14
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15 #ifdef EAX_MODE
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16
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17 int eax_encrypt_authenticate_memory(int cipher,
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18 const unsigned char *key, unsigned long keylen,
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19 const unsigned char *nonce, unsigned long noncelen,
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20 const unsigned char *header, unsigned long headerlen,
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21 const unsigned char *pt, unsigned long ptlen,
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22 unsigned char *ct,
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23 unsigned char *tag, unsigned long *taglen)
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24 {
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25 int err;
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26 eax_state eax;
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27
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28 if ((err = eax_init(&eax, cipher, key, keylen, nonce, noncelen, header, headerlen)) != CRYPT_OK) {
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29 return err;
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30 }
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31
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32 if ((err = eax_encrypt(&eax, pt, ct, ptlen)) != CRYPT_OK) {
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33 return err;
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34 }
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35
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36 if ((err = eax_done(&eax, tag, taglen)) != CRYPT_OK) {
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37 return err;
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38 }
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39
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40 return CRYPT_OK;
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41 }
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42
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43 #endif