Man Linux: Main Page and Category List


       gnutls_certificate_client_set_retrieve_function   -   Used   to  set  a
       callback to retrieve the certificate


       #include <gnutls/gnutls.h>

       cred, gnutls_certificate_client_retrieve_function * func);


       gnutls_certificate_credentials_t cred
                   is a gnutls_certificate_credentials_t structure.

       gnutls_certificate_client_retrieve_function * func
                   is the callback function


       This function sets a callback to be called in  order  to  retrieve  the
       certificate  to  be  used  in  the  handshake.  The callback’s function
       prototype is: int (*callback)(gnutls_session_t,  const  gnutls_datum_t*
       req_ca_dn,   int  nreqs,  const  gnutls_pk_algorithm_t*  pk_algos,  int
       pk_algos_length, gnutls_retr_st* st);

       req_ca_cert is only used in X.509 certificates.  Contains a  list  with
       the  CA  names  that  the server considers trusted.  Normally we should
       send a certificate that is signed by one of these CAs. These names  are
       DER   encoded.  To  get  a  more  meaningful  value  use  the  function

       pk_algos contains a list with server’s acceptable signature algorithms.
       The  certificate returned should support the server’s given algorithms.

       st should contain the certificates and private keys.

       If the callback function is provided then gnutls will call it,  in  the
       handshake, after the certificate request message has been received.

       The  callback  function should set the certificate list to be sent, and
       return 0 on success. If no certificate was selected then the number  of
       certificates  should be set to zero. The value (-1) indicates error and
       the handshake will be terminated.


       Report   bugs   to    <>.     GnuTLS    home    page:  General  help  using GNU software:


       Copyright © 2008 Free Software Foundation.
       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.


       The full documentation for gnutls is maintained as  a  Texinfo  manual.
       If  the  info  and gnutls programs are properly installed at your site,
       the command

              info gnutls

       should give you access to the complete manual.

gnutls                      gnutls_certificate_client_set_retrieve_function(3)