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.\" Copyright (c) 2019 Yubico AB. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions are
.\" met:
.\"
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in
.\" the documentation and/or other materials provided with the
.\" distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
.\" "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
.\" A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
.\" HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
.\" LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
.\" OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
.\" SPDX-License-Identifier: BSD-2-Clause
.\"
.Dd $Mdocdate: September 13 2019 $
.Dt FIDO_BIO_DEV_GET_INFO 3
.Os
.Sh NAME
.Nm fido_bio_dev_get_info ,
.Nm fido_bio_dev_enroll_begin ,
.Nm fido_bio_dev_enroll_continue ,
.Nm fido_bio_dev_enroll_cancel ,
.Nm fido_bio_dev_enroll_remove ,
.Nm fido_bio_dev_get_template_array ,
.Nm fido_bio_dev_set_template_name
.Nd FIDO2 biometric authenticator API
.Sh SYNOPSIS
.In fido.h
.In fido/bio.h
.Ft int
.Fn fido_bio_dev_get_info "fido_dev_t *dev" "fido_bio_info_t *info"
.Ft int
.Fn fido_bio_dev_enroll_begin "fido_dev_t *dev" "fido_bio_template_t *template" "fido_bio_enroll_t *enroll" "uint32_t timeout_ms" "const char *pin"
.Ft int
.Fn fido_bio_dev_enroll_continue "fido_dev_t *dev" "const fido_bio_template_t *template" "fido_bio_enroll_t *enroll" "uint32_t timeout_ms"
.Ft int
.Fn fido_bio_dev_enroll_cancel "fido_dev_t *dev"
.Ft int
.Fn fido_bio_dev_enroll_remove "fido_dev_t *dev" "const fido_bio_template_t *template" "const char *pin"
.Ft int
.Fn fido_bio_dev_get_template_array "fido_dev_t *dev" "fido_bio_template_array_t *template_array" "const char *pin"
.Ft int
.Fn fido_bio_dev_set_template_name "fido_dev_t *dev" "const fido_bio_template_t *template" "const char *pin"
.Sh DESCRIPTION
The functions described in this page allow biometric
templates on a FIDO2 authenticator to be listed, created,
removed, and customised.
Please note that not all FIDO2 authenticators support biometric
enrollment.
For a description of the types involved, please refer to
.Xr fido_bio_info_new 3 ,
.Xr fido_bio_enroll_new 3 ,
and
.Xr fido_bio_template 3 .
.Pp
The
.Fn fido_bio_dev_get_info
function populates
.Fa info
with sensor information from
.Fa dev .
.Pp
The
.Fn fido_bio_dev_enroll_begin
function initiates a biometric enrollment on
.Fa dev ,
instructing the authenticator to wait
.Fa timeout_ms
milliseconds.
On success,
.Fa template
and
.Fa enroll
will be populated with the newly created template's
information and enrollment status, respectively.
.Pp
The
.Fn fido_bio_dev_enroll_continue
function continues an ongoing enrollment on
.Fa dev ,
instructing the authenticator to wait
.Fa timeout_ms
milliseconds.
On success,
.Fa enroll
will be updated to reflect the status of the biometric
enrollment.
.Pp
The
.Fn fido_bio_dev_enroll_cancel
function cancels an ongoing enrollment on
.Fa dev .
.Pp
The
.Fn fido_bio_dev_enroll_remove
function removes
.Fa template
from
.Fa dev .
.Pp
The
.Fn fido_bio_dev_get_template_array
function populates
.Fa template_array
with the templates currently enrolled on
.Fa dev .
.Pp
The
.Fn fido_bio_dev_set_template_name
function sets the friendly name of
.Fa template
on
.Fa dev .
.Sh RETURN VALUES
The error codes returned by
.Fn fido_bio_dev_get_info ,
.Fn fido_bio_dev_enroll_begin ,
.Fn fido_bio_dev_enroll_continue ,
.Fn fido_bio_dev_enroll_cancel ,
.Fn fido_bio_dev_enroll_remove ,
.Fn fido_bio_dev_get_template_array ,
and
.Fn fido_bio_dev_set_template_name
are defined in
.In fido/err.h .
On success,
.Dv FIDO_OK
is returned.
.Sh SEE ALSO
.Xr fido_bio_enroll_new 3 ,
.Xr fido_bio_info_new 3 ,
.Xr fido_bio_template 3
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