NAME

       gnutls_pubkey_export - API function

SYNOPSIS

       #include <gnutls/abstract.h>

       int   gnutls_pubkey_export(gnutls_pubkey_t   key,  gnutls_x509_crt_fmt_t  format,  void  *
       output_data, size_t * output_data_size);

ARGUMENTS

       gnutls_pubkey_t key
                   Holds the certificate

       gnutls_x509_crt_fmt_t format
                   the format of output params. One of PEM or DER.

       void * output_data
                   will contain a certificate PEM or DER encoded

       size_t * output_data_size
                   holds the size of output_data (and will be replaced  by  the  actual  size  of
                   parameters)

DESCRIPTION

       This  function  will  export  the  public  key  to DER or PEM format.  The contents of the
       exported data is the SubjectPublicKeyInfo X.509 structure.

       If the buffer provided is not long enough to hold the output,  then  *output_data_size  is
       updated and GNUTLS_E_SHORT_MEMORY_BUFFER will be returned.

       If the structure is PEM encoded, it will have a header of "BEGIN CERTIFICATE".

RETURNS

       In case of failure a negative error code will be returned, and 0 on success.

SINCE

       2.12.0

REPORTING BUGS

       Report bugs to <bugs@gnutls.org>.
       Home page: https://www.gnutls.org

COPYRIGHT

       Copyright © 2001-2023 Free Software Foundation, Inc., and others.
       Copying  and distribution of this file, with or without modification, are permitted in any
       medium without royalty provided the copyright notice and this notice are preserved.

SEE ALSO

       The  full  documentation  for  gnutls  is  maintained  as  a  Texinfo  manual.    If   the
       /usr/share/doc/gnutls/ directory does not contain the HTML form visit

       https://www.gnutls.org/manual/