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PKEY_USAGE_PERIOD_NEW(3) FreeBSD Library Functions Manual NAME PKEY_USAGE_PERIOD_new, PKEY_USAGE_PERIOD_free - X.509 certificate private key usage period extension SYNOPSIS #include <openssl/x509v3.h> PKEY_USAGE_PERIOD * PKEY_USAGE_PERIOD_new(void); void PKEY_USAGE_PERIOD_free(PKEY_USAGE_PERIOD *period); DESCRIPTION PKEY_USAGE_PERIOD_new() allocates and initializes an empty PKEY_USAGE_PERIOD object, representing an ASN.1 PrivateKeyUsagePeriod structure defined in RFC 3280 section 4.2.1.4. It could be used in X509 certificates to specify a validity period for the private key that differed from the validity period of the certificate. PKEY_USAGE_PERIOD_free() frees period. RETURN VALUES PKEY_USAGE_PERIOD_new() returns the new PKEY_USAGE_PERIOD object or NULL if an error occurs. SEE ALSO d2i_PKEY_USAGE_PERIOD(3), EXTENDED_KEY_USAGE_new(3), X509_CINF_new(3), X509_EXTENSION_new(3), X509_new(3) 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, which says: "Section 4.2.1.4 in RFC 3280, which specified the PrivateKeyUsagePeriod certificate extension but deprecated its use, was removed. Use of this ISO standard extension is neither deprecated nor recommended for use in the Internet PKI." HISTORY PKEY_USAGE_PERIOD_new() and PKEY_USAGE_PERIOD_free() first appeared in OpenSSL 0.9.2b and have been available since OpenBSD 2.6. FreeBSD 14.1-RELEASE-p8 June 6, 2019 FreeBSD 14.1-RELEASE-p8