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Title "X509_CMP_TIME 3" For nroff, turn off justification. Always turn off hyphenation; it makes
way too many mistakes in technical documents.
X509_cmp_time, X509_cmp_current_time, X509_cmp_timeframe, X509_time_adj, X509_time_adj_ex, X509_gmtime_adj \- X509 time functions Header "SYNOPSIS" .Vb 8 int X509_cmp_time(const ASN1_TIME *asn1_time, time_t *in_tm); int X509_cmp_current_time(const ASN1_TIME *asn1_time); int X509_cmp_timeframe(const X509_VERIFY_PARAM *vpm, const ASN1_TIME *start, const ASN1_TIME *end); ASN1_TIME *X509_time_adj(ASN1_TIME *asn1_time, long offset_sec, time_t *in_tm); ASN1_TIME *X509_time_adj_ex(ASN1_TIME *asn1_time, int offset_day, long offset_sec, time_t *in_tm); ASN1_TIME *X509_gmtime_adj(ASN1_TIME *asn1_time, long offset_sec); .Ve Header "DESCRIPTION" \fBX509_cmp_time() compares the \s-1ASN1_TIME\s0 in asn1_time with the time in <in_tm>.

\fBX509_cmp_current_time() compares the \s-1ASN1_TIME\s0 in \fIasn1_time with the current time, expressed as time_t.

\fBX509_cmp_timeframe() compares the given time period with the reference time included in the verification parameters vpm if they are not \s-1NULL\s0 and contain \fBX509_V_FLAG_USE_CHECK_TIME; else the current time is used as reference time.

\fBX509_time_adj_ex() sets the \s-1ASN1_TIME\s0 structure asn1_time to the time \fIoffset_day and offset_sec after in_tm.

\fBX509_time_adj() sets the \s-1ASN1_TIME\s0 structure asn1_time to the time \fIoffset_sec after in_tm. This method can only handle second offsets up to the capacity of long, so the newer X509_time_adj_ex() \s-1API\s0 should be preferred.

In both methods, if asn1_time is \s-1NULL,\s0 a new \s-1ASN1_TIME\s0 structure is allocated and returned.

In all methods, if in_tm is \s-1NULL,\s0 the current time, expressed as time_t, is used.

\fIasn1_time must satisfy the \s-1ASN1_TIME\s0 format mandated by \s-1RFC 5280,\s0 i.e., its format must be either \s-1YYMMDDHHMMSSZ\s0 or \s-1YYYYMMDDHHMMSSZ.\s0

\fBX509_gmtime_adj() sets the \s-1ASN1_TIME\s0 structure asn1_time to the time \fIoffset_sec after the current time. It is equivalent to calling \fBX509_time_adj() with the last parameter as \s-1NULL.\s0

Header "BUGS" Unlike many standard comparison functions, X509_cmp_time() and \fBX509_cmp_current_time() return 0 on error. Header "RETURN VALUES" \fBX509_cmp_time() and X509_cmp_current_time() return -1 if asn1_time is earlier than, or equal to, in_tm (resp. current time), and 1 otherwise. These methods return 0 on error.

\fBX509_cmp_timeframe() returns 0 if vpm is not \s-1NULL\s0 and the verification parameters do not contain X509_V_FLAG_USE_CHECK_TIME but do contain X509_V_FLAG_NO_CHECK_TIME. Otherwise it returns 1 if the end time is not \s-1NULL\s0 and the reference time (which has determined as stated above) is past the end time, -1 if the start time is not \s-1NULL\s0 and the reference time is before, else 0 to indicate that the reference time is in range (implying that the end time is not before the start time if both are present).

\fBX509_time_adj(), X509_time_adj_ex() and X509_gmtime_adj() return a pointer to the updated \s-1ASN1_TIME\s0 structure, and \s-1NULL\s0 on error.

Header "HISTORY" \fBX509_cmp_timeframe() was added in OpenSSL 3.0. Header "COPYRIGHT" Copyright 2017-2022 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.