D2I_AUTHORITY_KEYID(3)

NAME
d2i_AUTHORITY_KEYID, i2d_AUTHORITY_KEYID - decode and encode X.509 authority key identifiers

SYNOPSIS
#include <openssl/x509v3.h>
AUTHORITY_KEYID *
d2i_AUTHORITY_KEYID(AUTHORITY_KEYID **val_out, const unsigned char **der_in, long length);
int
i2d_AUTHORITY_KEYID(AUTHORITY_KEYID *val_in, unsigned char **der_out);

DESCRIPTION
d2i_AUTHORITY_KEYID() and i2d_AUTHORITY_KEYID() decode and encode an ASN.1 AuthorityKeyIdentifier structure defined in RFC 5280 section 4.2.1.1. For details about the semantics, examples, caveats, and bugs, see ASN1_item_d2i(3).

RETURN VALUES
d2i_AUTHORITY_KEYID() returns an AUTHORITY_KEYID object or NULL if an error occurs.

i2d_AUTHORITY_KEYID() returns the number of bytes successfully encoded or a negative value if an error occurs.

SEE ALSO
ASN1_item_d2i(3), AUTHORITY_KEYID_new(3), X509_EXTENSION_new(3)

STANDARDS
RFC 5280: Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile:
-   section 4.2.1.1: Certificate Extensions: Authority Key Identifier
-   section 5.2.1: CRL Extensions: Authority Key Identifier

HISTORY
d2i_AUTHORITY_KEYID() and i2d_AUTHORITY_KEYID() first appeared in OpenSSL 0.9.2b and have been available since OpenBSD 2.6.