Provided by: gnutls-doc_3.0.11+really2.12.14-5ubuntu3_all bug


       gnutls_certificate_set_retrieve_function - API function


       #include <gnutls/gnutls.h>

       void    gnutls_certificate_set_retrieve_function(gnutls_certificate_credentials_t    cred,
       gnutls_certificate_retrieve_function * func);


       gnutls_certificate_credentials_t cred
                   is a gnutls_certificate_credentials_t structure.

       gnutls_certificate_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_retr2_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.

       In server side pk_algos and req_ca_dn are NULL.

       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.