2021-10-01 23:52:55 +00:00
|
|
|
.\" Copyright (c) 2019 Yubico AB. All rights reserved.
|
|
|
|
.\" Use of this source code is governed by a BSD-style
|
|
|
|
.\" license that can be found in the LICENSE file.
|
|
|
|
.\"
|
|
|
|
.Dd $Mdocdate: September 13 2019 $
|
|
|
|
.Dt FIDO_BIO_INFO_NEW 3
|
|
|
|
.Os
|
|
|
|
.Sh NAME
|
|
|
|
.Nm fido_bio_info_new ,
|
|
|
|
.Nm fido_bio_info_free ,
|
|
|
|
.Nm fido_bio_info_type ,
|
|
|
|
.Nm fido_bio_info_max_samples
|
2023-04-26 16:38:17 +00:00
|
|
|
.Nd FIDO2 biometric sensor information API
|
2021-10-01 23:52:55 +00:00
|
|
|
.Sh SYNOPSIS
|
|
|
|
.In fido.h
|
|
|
|
.In fido/bio.h
|
|
|
|
.Ft fido_bio_info_t *
|
|
|
|
.Fn fido_bio_info_new "void"
|
|
|
|
.Ft void
|
|
|
|
.Fn fido_bio_info_free "fido_bio_info_t **info_p"
|
|
|
|
.Ft uint8_t
|
|
|
|
.Fn fido_bio_info_type "const fido_bio_info_t *info"
|
|
|
|
.Ft uint8_t
|
|
|
|
.Fn fido_bio_info_max_samples "const fido_bio_info_t *info"
|
|
|
|
.Sh DESCRIPTION
|
|
|
|
Biometric sensor metadata is abstracted in
|
|
|
|
.Em libfido2
|
|
|
|
by the
|
|
|
|
.Vt fido_bio_info_t
|
|
|
|
type.
|
|
|
|
.Pp
|
|
|
|
The functions described in this page allow a
|
|
|
|
.Vt fido_bio_info_t
|
|
|
|
type to be allocated, deallocated, and inspected.
|
|
|
|
For device operations on
|
|
|
|
.Vt fido_bio_info_t ,
|
|
|
|
please refer to
|
|
|
|
.Xr fido_bio_dev_get_info 3 .
|
|
|
|
.Pp
|
|
|
|
The
|
|
|
|
.Fn fido_bio_info_new
|
|
|
|
function returns a pointer to a newly allocated, empty
|
|
|
|
.Vt fido_bio_info_t
|
|
|
|
type.
|
|
|
|
If memory cannot be allocated, NULL is returned.
|
|
|
|
.Pp
|
|
|
|
The
|
|
|
|
.Fn fido_bio_info_free
|
|
|
|
function releases the memory backing
|
|
|
|
.Fa *info_p ,
|
|
|
|
where
|
|
|
|
.Fa *info_p
|
|
|
|
must have been previously allocated by
|
|
|
|
.Fn fido_bio_info_new .
|
|
|
|
On return,
|
|
|
|
.Fa *info_p
|
|
|
|
is set to NULL.
|
|
|
|
Either
|
|
|
|
.Fa info_p
|
|
|
|
or
|
|
|
|
.Fa *info_p
|
|
|
|
may be NULL, in which case
|
|
|
|
.Fn fido_bio_info_free
|
|
|
|
is a NOP.
|
|
|
|
.Pp
|
|
|
|
The
|
|
|
|
.Fn fido_bio_info_type
|
|
|
|
function returns the fingerprint sensor type, which is
|
|
|
|
.Dv 1
|
|
|
|
for touch sensors, and
|
|
|
|
.Dv 2
|
|
|
|
for swipe sensors.
|
|
|
|
.Pp
|
|
|
|
The
|
|
|
|
.Fn fido_bio_info_max_samples
|
|
|
|
function returns the maximum number of successful samples
|
|
|
|
required for enrollment.
|
|
|
|
.Sh SEE ALSO
|
|
|
|
.Xr fido_bio_dev_get_info 3 ,
|
|
|
|
.Xr fido_bio_enroll_new 3 ,
|
|
|
|
.Xr fido_bio_template 3
|