FIDO_DEV_GET_ASSERT(3) BSD 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 in-
voked on assert to retrieve the various attributes of the generated as-
sertion.
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)
BSD May 24, 2018 BSD
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