D2I_AUTHORITY_KEYID(3)     Library Functions Manual     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.

Linux 6.8.7-arch1-1             March 21, 2018             Linux 6.8.7-arch1-1