Mercurial > dropbear

annotate libtomcrypt/src/modes/ctr/ctr_decrypt.c @ 1053:fd3712d1ff7f

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Better failure handling
author Matt Johnston <matt@ucc.asn.au>
date Sat, 28 Feb 2015 23:49:39 +0800
parents 0cbe8f6dbf9e
children f849a5ca2efc
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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.com
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10 */
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11 #include "tomcrypt.h"
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13 /**
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14 @file ctr_decrypt.c
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15 CTR implementation, decrypt data, Tom St Denis
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16 */
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17
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18 #ifdef LTC_CTR_MODE
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20 /**
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21 CTR decrypt
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22 @param ct Ciphertext
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23 @param pt [out] Plaintext
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24 @param len Length of ciphertext (octets)
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25 @param ctr CTR state
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26 @return CRYPT_OK if successful
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27 */
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28 int ctr_decrypt(const unsigned char *ct, unsigned char *pt, unsigned long len, symmetric_CTR *ctr)
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29 {
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30 LTC_ARGCHK(pt != NULL);
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31 LTC_ARGCHK(ct != NULL);
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32 LTC_ARGCHK(ctr != NULL);
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34 return ctr_encrypt(ct, pt, len, ctr);
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35 }
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37 #endif
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40 /* $Source: /cvs/libtom/libtomcrypt/src/modes/ctr/ctr_decrypt.c,v $ */
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41 /* $Revision: 1.5 $ */
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42 /* $Date: 2006/06/29 01:46:46 $ */