5 X509_cmp_time, X509_cmp_current_time, X509_cmp_timeframe,
6 X509_time_adj, X509_time_adj_ex
11 int X509_cmp_time(const ASN1_TIME *asn1_time, time_t *in_tm);
12 int X509_cmp_current_time(const ASN1_TIME *asn1_time);
13 int X509_cmp_timeframe(const X509_VERIFY_PARAM *vpm,
14 const ASN1_TIME *start, const ASN1_TIME *end);
15 ASN1_TIME *X509_time_adj(ASN1_TIME *asn1_time, long offset_sec, time_t *in_tm);
16 ASN1_TIME *X509_time_adj_ex(ASN1_TIME *asn1_time, int offset_day, long
17 offset_sec, time_t *in_tm);
21 X509_cmp_time() compares the ASN1_TIME in B<asn1_time> with the time
24 X509_cmp_current_time() compares the ASN1_TIME in
25 B<asn1_time> with the current time, expressed as time_t.
27 X509_cmp_timeframe() compares the given time period with the reference time
28 included in the verification parameters B<vpm> if they are not NULL and contain
29 B<X509_V_FLAG_USE_CHECK_TIME>; else the current time is used as reference time.
31 X509_time_adj_ex() sets the ASN1_TIME structure B<asn1_time> to the time
32 B<offset_day> and B<offset_sec> after B<in_tm>.
34 X509_time_adj() sets the ASN1_TIME structure B<asn1_time> to the time
35 B<offset_sec> after B<in_tm>. This method can only handle second
36 offsets up to the capacity of long, so the newer X509_time_adj_ex()
37 API should be preferred.
39 In both methods, if B<asn1_time> is NULL, a new ASN1_TIME structure
40 is allocated and returned.
42 In all methods, if B<in_tm> is NULL, the current time, expressed as
45 B<asn1_time> must satisfy the ASN1_TIME format mandated by RFC 5280,
46 i.e., its format must be either YYMMDDHHMMSSZ or YYYYMMDDHHMMSSZ.
50 Unlike many standard comparison functions, X509_cmp_time() and
51 X509_cmp_current_time() return 0 on error.
55 X509_cmp_time() and X509_cmp_current_time() return -1 if B<asn1_time>
56 is earlier than, or equal to, B<in_tm> (resp. current time), and 1
57 otherwise. These methods return 0 on error.
59 X509_cmp_timeframe() returns 0 if B<vpm> is not NULL and the verification
60 parameters do not contain B<X509_V_FLAG_USE_CHECK_TIME>
61 but do contain B<X509_V_FLAG_NO_CHECK_TIME>. Otherwise it returns
62 1 if the end time is not NULL and the reference time (which has determined as
63 stated above) is past the end time, -1 if the start time is not NULL and the
64 reference time is before, else 0 to indicate that the reference time is in range
65 (implying that the end time is not before the start time if both are present).
67 X509_time_adj() and X509_time_adj_ex() return a pointer to the updated
68 ASN1_TIME structure, and NULL on error.
72 X509_cmp_timeframe() was added in OpenSSL 3.0.
76 Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
78 Licensed under the Apache License 2.0 (the "License"). You may not use
79 this file except in compliance with the License. You can obtain a copy
80 in the file LICENSE in the source distribution or at
81 L<https://www.openssl.org/source/license.html>.