FIDO_DEV_GET_ASSERT(3)     Library Functions Manual     FIDO_DEV_GET_ASSERT(3)

NAME
     fido_dev_get_assert - obtains an assertion from a FIDO2 device

SYNOPSIS
     #include <fido.h>

     int
     fido_dev_get_assert(fido_dev_t *dev, fido_assert_t *assert,
         const char *pin);

DESCRIPTION
     The fido_dev_get_assert() function asks the FIDO2 device represented by
     dev for an assertion according to the following parameters defined in
     assert:

     -   relying party ID;
     -   client data hash;
     -   list of allowed credential IDs;
     -   user presence and user verification attributes.

     See fido_assert_set_authdata(3) for information on how these values are
     set.

     If a PIN is not needed to authenticate the request against dev, then pin
     may be NULL.  Otherwise pin must point to a NUL-terminated UTF-8 string.

     After a successful call to fido_dev_get_assert(), the
     fido_assert_count(3), fido_assert_user_display_name(3),
     fido_assert_user_icon(3), fido_assert_user_name(3),
     fido_assert_authdata_ptr(3), fido_assert_user_id_ptr(3),
     fido_assert_sig_ptr(3), and fido_assert_sigcount(3) functions may be
     invoked on assert to retrieve the various attributes of the generated
     assertion.

     Please note that fido_dev_get_assert() is synchronous and will block if
     necessary.

RETURN VALUES
     The error codes returned by fido_dev_get_assert() are defined in
     <fido/err.h>.  On success, FIDO_OK is returned.

SEE ALSO
     fido_assert_new(3), fido_assert_set_authdata(3)

Linux 6.7.4-arch1-1              May 24, 2018              Linux 6.7.4-arch1-1