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      1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
      2  *
      3  * LibTomCrypt is a library that provides various cryptographic
      4  * algorithms in a highly modular and flexible manner.
      5  *
      6  * The library is free for all purposes without any express
      7  * guarantee it works.
      8  *
      9  * Tom St Denis, tomstdenis (at) gmail.com, http://libtomcrypt.com
     10  */
     11 #include "tomcrypt.h"
     12 
     13 /**
     14   @file der_length_utctime.c
     15   ASN.1 DER, get length of UTCTIME, Tom St Denis
     16 */
     17 
     18 #ifdef LTC_DER
     19 
     20 /**
     21   Gets length of DER encoding of UTCTIME
     22   @param utctime      The UTC time structure to get the size of
     23   @param outlen [out] The length of the DER encoding
     24   @return CRYPT_OK if successful
     25 */
     26 int der_length_utctime(ltc_utctime *utctime, unsigned long *outlen)
     27 {
     28    LTC_ARGCHK(outlen  != NULL);
     29    LTC_ARGCHK(utctime != NULL);
     30 
     31    if (utctime->off_hh == 0 && utctime->off_mm == 0) {
     32       /* we encode as YYMMDDhhmmssZ */
     33       *outlen = 2 + 13;
     34    } else {
     35       /* we encode as YYMMDDhhmmss{+|-}hh'mm' */
     36       *outlen = 2 + 17;
     37    }
     38 
     39    return CRYPT_OK;
     40 }
     41 
     42 #endif
     43 
     44 /* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/utctime/der_length_utctime.c,v $ */
     45 /* $Revision: 1.4 $ */
     46 /* $Date: 2006/03/31 14:15:35 $ */
     47