D2I_X509_ALGOR(3)          Library Functions Manual          D2I_X509_ALGOR(3)

NAME
     d2i_X509_ALGOR, i2d_X509_ALGOR, d2i_X509_ALGORS, i2d_X509_ALGORS - decode
     and encode algorithm identifiers

SYNOPSIS
     #include <openssl/x509.h>

     X509_ALGOR *
     d2i_X509_ALGOR(X509_ALGOR **val_out, unsigned char **der_in,
         long length);

     int
     i2d_X509_ALGOR(X509_ALGOR *val_in, unsigned char **der_out);

     X509_ALGORS *
     d2i_X509_ALGORS(X509_ALGORS **val_out, const unsigned char **der_in,
         long length);

     int
     i2d_X509_ALGORS(X509_ALGORS *val_in, unsigned char **der_out);

DESCRIPTION
     d2i_X509_ALGOR() and i2d_X509_ALGOR() decode and encode an ASN.1
     AlgorithmIdentifier structure defined in RFC 5280 section 4.1.1.2.

     d2i_X509_ALGORS() and i2d_X509_ALGORS() decode and encode an ASN.1
     sequence of AlgorithmIdentifier structures.  The data type X509_ALGORS is
     defined as STACK_OF(X509_ALGOR).

     For details about the semantics, examples, caveats, and bugs, see
     ASN1_item_d2i(3).

SEE ALSO
     ASN1_item_d2i(3), STACK_OF(3), X509_ALGOR_new(3)

STANDARDS
     RFC 5280: Internet X.509 Public Key Infrastructure Certificate and
     Certificate Revocation List (CRL) Profile

HISTORY
     d2i_X509_ALGOR() and i2d_X509_ALGOR() first appeared in SSLeay 0.5.1 and
     have been available since OpenBSD 2.4.

     d2i_X509_ALGORS() and i2d_X509_ALGORS() first appeared in OpenSSL 0.9.8h
     and have been available since OpenBSD 4.5.

Linux 6.8.7-arch1-1            November 3, 2021            Linux 6.8.7-arch1-1