Mercurial > dropbear

annotate libtomcrypt/src/pk/asn1/der/utctime/der_length_utctime.c @ 766:d1575fdc29a6 ecc

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start on ecdsa keys
author Matt Johnston <matt@ucc.asn.au>
date Tue, 09 Apr 2013 00:36:04 +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 der_length_utctime.c
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15 ASN.1 DER, get length of UTCTIME, Tom St Denis
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16 */
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18 #ifdef LTC_DER
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20 /**
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21 Gets length of DER encoding of UTCTIME
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22 @param utctime The UTC time structure to get the size of
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23 @param outlen [out] The length of the DER encoding
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24 @return CRYPT_OK if successful
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25 */
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26 int der_length_utctime(ltc_utctime *utctime, unsigned long *outlen)
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27 {
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28 LTC_ARGCHK(outlen != NULL);
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29 LTC_ARGCHK(utctime != NULL);
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31 if (utctime->off_hh == 0 && utctime->off_mm == 0) {
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32 /* we encode as YYMMDDhhmmssZ */
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33 *outlen = 2 + 13;
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34 } else {
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35 /* we encode as YYMMDDhhmmss{+|-}hh'mm' */
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36 *outlen = 2 + 17;
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37 }
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39 return CRYPT_OK;
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40 }
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42 #endif
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44 /* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/utctime/der_length_utctime.c,v $ */
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45 /* $Revision: 1.4 $ */
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46 /* $Date: 2006/03/31 14:15:35 $ */