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