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annotate eax_decrypt.c @ 0:d7da3b1e1540 libtomcrypt

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put back the 0.95 makefile which was inadvertently merged over
author Matt Johnston <matt@ucc.asn.au>
date Mon, 31 May 2004 18:21:40 +0000
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d7da3b1e1540 put back the 0.95 makefile which was inadvertently merged over
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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_decrypt(eax_state *eax, const unsigned char *ct, unsigned char *pt, unsigned long length)
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18 {
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19 int err;
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20
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21 _ARGCHK(eax != NULL);
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22 _ARGCHK(pt != NULL);
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23 _ARGCHK(ct != NULL);
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24
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25 /* omac ciphertext */
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26 if ((err = omac_process(&eax->ctomac, ct, length)) != CRYPT_OK) {
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27 return err;
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28 }
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29
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30 /* decrypt */
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31 return ctr_decrypt(ct, pt, length, &eax->ctr);
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32 }
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33
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34 #endif