3e696dfb70
Some highlights from NEWS:
** bio: fix CTAP2 canonical CBOR encoding in fido_bio_dev_enroll_*();
gh#480.
** New API calls:
- fido_dev_info_set;
- fido_dev_io_handle;
- fido_dev_new_with_info;
- fido_dev_open_with_info.
** Documentation and reliability fixes.
** Support for TPM 2.0 attestation of COSE_ES256 credentials.
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
180 lines
4.1 KiB
Groff
180 lines
4.1 KiB
Groff
.\" Copyright (c) 2019 Yubico AB. All rights reserved.
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.\" Use of this source code is governed by a BSD-style
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.\" license that can be found in the LICENSE file.
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.\"
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.Dd $Mdocdate: September 13 2019 $
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.Dt FIDO_BIO_TEMPLATE 3
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.Os
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.Sh NAME
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.Nm fido_bio_template ,
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.Nm fido_bio_template_array_count ,
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.Nm fido_bio_template_array_free ,
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.Nm fido_bio_template_array_new ,
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.Nm fido_bio_template_free ,
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.Nm fido_bio_template_id_len ,
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.Nm fido_bio_template_id_ptr ,
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.Nm fido_bio_template_name ,
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.Nm fido_bio_template_new ,
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.Nm fido_bio_template_set_id ,
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.Nm fido_bio_template_set_name
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.Nd FIDO2 biometric template API
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.Sh SYNOPSIS
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.In fido.h
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.In fido/bio.h
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.Ft fido_bio_template_t *
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.Fn fido_bio_template_new "void"
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.Ft void
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.Fn fido_bio_template_free "fido_bio_template_t **template_p"
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.Ft const char *
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.Fn fido_bio_template_name "const fido_bio_template_t *template"
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.Ft const unsigned char *
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.Fn fido_bio_template_id_ptr "const fido_bio_template_t *template"
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.Ft size_t
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.Fn fido_bio_template_id_len "const fido_bio_template_t *template"
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.Ft int
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.Fn fido_bio_template_set_id "fido_bio_template_t *template" "const unsigned char *ptr" "size_t len"
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.Ft int
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.Fn fido_bio_template_set_name "fido_bio_template_t *template" "const char *name"
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.Ft fido_bio_template_array_t *
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.Fn fido_bio_template_array_new "void"
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.Ft void
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.Fn fido_bio_template_array_free "fido_bio_template_array_t **array_p"
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.Ft size_t
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.Fn fido_bio_template_array_count "const fido_bio_template_array_t *array"
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.Ft const fido_bio_template_t *
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.Fn fido_bio_template "const fido_bio_template_array_t *array" "size_t idx"
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.Sh DESCRIPTION
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Existing FIDO2 biometric enrollments are abstracted in
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.Em libfido2
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by the
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.Vt fido_bio_template_t
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and
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.Vt fido_bio_template_array_t
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types.
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.Pp
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The functions described in this page allow a
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.Vt fido_bio_template_t
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type to be allocated, deallocated, changed, and inspected,
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and a
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.Vt fido_bio_template_array_t
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type to be allocated, deallocated, and inspected.
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For device operations on
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.Vt fido_bio_template_t
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and
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.Vt fido_bio_template_array_t ,
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please refer to
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.Xr fido_bio_dev_get_info 3 .
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.Pp
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The
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.Fn fido_bio_template_new
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function returns a pointer to a newly allocated, empty
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.Vt fido_bio_template_t
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type.
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If memory cannot be allocated, NULL is returned.
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.Pp
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The
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.Fn fido_bio_template_free
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function releases the memory backing
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.Fa *template_p ,
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where
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.Fa *template_p
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must have been previously allocated by
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.Fn fido_bio_template_new .
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On return,
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.Fa *template_p
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is set to NULL.
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Either
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.Fa template_p
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or
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.Fa *template_p
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may be NULL, in which case
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.Fn fido_bio_template_free
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is a NOP.
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.Pp
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The
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.Fn fido_bio_template_name
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function returns a pointer to a NUL-terminated string containing
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the friendly name of
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.Fa template ,
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or NULL if
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.Fa template
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does not have a friendly name set.
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.Pp
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The
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.Fn fido_bio_template_id_ptr
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function returns a pointer to the template id of
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.Fa template ,
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or NULL if
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.Fa template
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does not have an id.
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The corresponding length can be obtained by
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.Fn fido_bio_template_id_len .
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.Pp
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The
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.Fn fido_bio_template_set_name
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function sets the friendly name of
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.Fa template
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to
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.Fa name .
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If
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.Fa name
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is NULL, the friendly name of
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.Fa template
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is unset.
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.Pp
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The
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.Fn fido_bio_template_array_new
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function returns a pointer to a newly allocated, empty
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.Vt fido_bio_template_array_t
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type.
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If memory cannot be allocated, NULL is returned.
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.Pp
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The
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.Fn fido_bio_template_array_free
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function releases the memory backing
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.Fa *array_p ,
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where
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.Fa *array_p
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must have been previously allocated by
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.Fn fido_bio_template_array_new .
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On return,
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.Fa *array_p
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is set to NULL.
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Either
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.Fa array_p
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or
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.Fa *array_p
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may be NULL, in which case
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.Fn fido_bio_template_array_free
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is a NOP.
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.Pp
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The
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.Fn fido_bio_template_array_count
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function returns the number of templates in
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.Fa array .
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.Pp
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The
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.Fn fido_bio_template
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function returns a pointer to the template at index
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.Fa idx
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in
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.Fa array .
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Please note that the first template in
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.Fa array
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has an
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.Fa idx
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(index) value of 0.
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.Sh RETURN VALUES
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The error codes returned by
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.Fn fido_bio_template_set_id
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and
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.Fn fido_bio_template_set_name
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are defined in
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.In fido/err.h .
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On success,
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.Dv FIDO_OK
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is returned.
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.Sh SEE ALSO
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.Xr fido_bio_dev_get_info 3 ,
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.Xr fido_bio_enroll_new 3
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