libressl-d2i_PKEY_USAGE_PERIOD(3)

libressl-d2i_PKEY_USAGE_PERIOD3

Decode and encode x.509 key usage period extensions

Usage

Crypto Library (libcrypto, -lcrypto)

#include <openssl/x509v3.h>

PKEY_USAGE_PERIOD *

d2i_PKEY_USAGE_PERIOD(PKEY_USAGE_PERIOD **val_out, const unsigned char **der_in, long length);

int

i2d_PKEY_USAGE_PERIOD(PKEY_USAGE_PERIOD *val_in, unsigned char **der_out);

Overview

d2i_PKEY_USAGE_PERIOD() and i2d_PKEY_USAGE_PERIOD() decode and encode an ASN.1 PrivateKeyUsagePeriod structure defined in RFC 3280 section 4.2.1.4. For details about the semantics, examples, caveats, and bugs, see ASN1_item_d2i(3).

Return values

d2i_PKEY_USAGE_PERIOD() returns a PKEY_USAGE_PERIOD object or NULL if an error occurs.

i2d_PKEY_USAGE_PERIOD() returns the number of bytes successfully encoded or a negative value if an error occurs.

Standards

RFC 3280: Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile, section 4.2.1.4: Private Key Usage Period

RFC 3280 was obsoleted by RFC 5280; see PKEY_USAGE_PERIOD_new(3) for details.

History

d2i_PKEY_USAGE_PERIOD() and i2d_PKEY_USAGE_PERIOD() first appeared in OpenSSL 0.9.2b and have been available since OpenBSD 2.6.

From libressl 4.4.0-1 in Arch Linux 2026-11-01. Parsed by carta from the page's mdoc source.