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diff --git a/man/fido_credman_metadata_new.3 b/man/fido_credman_metadata_new.3 new file mode 100644 index 0000000..122020b --- /dev/null +++ b/man/fido_credman_metadata_new.3 @@ -0,0 +1,349 @@ +.\" Copyright (c) 2019-2021 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: June 28 2019 $ +.Dt FIDO_CREDMAN_METADATA_NEW 3 +.Os +.Sh NAME +.Nm fido_credman_metadata_new , +.Nm fido_credman_rk_new , +.Nm fido_credman_rp_new , +.Nm fido_credman_metadata_free , +.Nm fido_credman_rk_free , +.Nm fido_credman_rp_free , +.Nm fido_credman_rk_existing , +.Nm fido_credman_rk_remaining , +.Nm fido_credman_rk , +.Nm fido_credman_rk_count , +.Nm fido_credman_rp_id , +.Nm fido_credman_rp_name , +.Nm fido_credman_rp_count , +.Nm fido_credman_rp_id_hash_ptr , +.Nm fido_credman_rp_id_hash_len , +.Nm fido_credman_get_dev_metadata , +.Nm fido_credman_get_dev_rk , +.Nm fido_credman_set_dev_rk , +.Nm fido_credman_del_dev_rk , +.Nm fido_credman_get_dev_rp +.Nd FIDO2 credential management API +.Sh SYNOPSIS +.In fido.h +.In fido/credman.h +.Ft fido_credman_metadata_t * +.Fn fido_credman_metadata_new "void" +.Ft fido_credman_rk_t * +.Fn fido_credman_rk_new "void" +.Ft fido_credman_rp_t * +.Fn fido_credman_rp_new "void" +.Ft void +.Fn fido_credman_metadata_free "fido_credman_metadata_t **metadata_p" +.Ft void +.Fn fido_credman_rk_free "fido_credman_rk_t **rk_p" +.Ft void +.Fn fido_credman_rp_free "fido_credman_rp_t **rp_p" +.Ft uint64_t +.Fn fido_credman_rk_existing "const fido_credman_metadata_t *metadata" +.Ft uint64_t +.Fn fido_credman_rk_remaining "const fido_credman_metadata_t *metadata" +.Ft const fido_cred_t * +.Fn fido_credman_rk "const fido_credman_rk_t *rk" "size_t idx" +.Ft size_t +.Fn fido_credman_rk_count "const fido_credman_rk_t *rk" +.Ft const char * +.Fn fido_credman_rp_id "const fido_credman_rp_t *rp" "size_t idx" +.Ft const char * +.Fn fido_credman_rp_name "const fido_credman_rp_t *rp" "size_t idx" +.Ft size_t +.Fn fido_credman_rp_count "const fido_credman_rp_t *rp" +.Ft const unsigned char * +.Fn fido_credman_rp_id_hash_ptr "const fido_credman_rp_t *rp" "size_t idx" +.Ft size_t +.Fn fido_credman_rp_id_hash_len "const fido_credman_rp_t *" "size_t idx" +.Ft int +.Fn fido_credman_get_dev_metadata "fido_dev_t *dev" "fido_credman_metadata_t *metadata" "const char *pin" +.Ft int +.Fn fido_credman_get_dev_rk "fido_dev_t *dev" "const char *rp_id" "fido_credman_rk_t *rk" "const char *pin" +.Ft int +.Fn fido_credman_set_dev_rk "fido_dev_t *dev" "fido_cred_t *cred" "const char *pin" +.Ft int +.Fn fido_credman_del_dev_rk "fido_dev_t *dev" "const unsigned char *cred_id" "size_t cred_id_len" "const char *pin" +.Ft int +.Fn fido_credman_get_dev_rp "fido_dev_t *dev" "fido_credman_rp_t *rp" "const char *pin" +.Sh DESCRIPTION +The credential management API of +.Em libfido2 +allows resident credentials on a FIDO2 authenticator to be listed, +inspected, modified, and removed. +Please note that not all FIDO2 authenticators support credential +management. +To obtain information on what an authenticator supports, please +refer to +.Xr fido_cbor_info_new 3 . +.Pp +The +.Vt fido_credman_metadata_t +type abstracts credential management metadata. +.Pp +The +.Fn fido_credman_metadata_new +function returns a pointer to a newly allocated, empty +.Vt fido_credman_metadata_t +type. +If memory cannot be allocated, NULL is returned. +.Pp +The +.Fn fido_credman_metadata_free +function releases the memory backing +.Fa *metadata_p , +where +.Fa *metadata_p +must have been previously allocated by +.Fn fido_credman_metadata_new . +On return, +.Fa *metadata_p +is set to NULL. +Either +.Fa metadata_p +or +.Fa *metadata_p +may be NULL, in which case +.Fn fido_credman_metadata_free +is a NOP. +.Pp +The +.Fn fido_credman_get_dev_metadata +function populates +.Fa metadata +with information retrieved from +.Fa dev . +A valid +.Fa pin +must be provided. +.Pp +The +.Fn fido_credman_rk_existing +function inspects +.Fa metadata +and returns the number of resident credentials on the +authenticator. +The +.Fn fido_credman_rk_remaining +function inspects +.Fa metadata +and returns the estimated number of resident credentials that can +be created on the authenticator. +.Pp +The +.Vt fido_credman_rk_t +type abstracts the set of resident credentials belonging to a +given relying party. +.Pp +The +.Fn fido_credman_rk_new +function returns a pointer to a newly allocated, empty +.Vt fido_credman_rk_t +type. +If memory cannot be allocated, NULL is returned. +.Pp +The +.Fn fido_credman_rk_free +function releases the memory backing +.Fa *rk_p , +where +.Fa *rk_p +must have been previously allocated by +.Fn fido_credman_rk_new . +On return, +.Fa *rk_p +is set to NULL. +Either +.Fa rk_p +or +.Fa *rk_p +may be NULL, in which case +.Fn fido_credman_rk_free +is a NOP. +.Pp +The +.Fn fido_credman_get_dev_rk +function populates +.Fa rk +with the set of resident credentials belonging to +.Fa rp_id +in +.Fa dev . +A valid +.Fa pin +must be provided. +.Pp +The +.Fn fido_credman_rk_count +function returns the number of resident credentials in +.Fa rk . +The +.Fn fido_credman_rk +function returns a pointer to the credential at index +.Fa idx +in +.Fa rk . +Please note that the first credential in +.Fa rk +has an +.Fa idx +(index) value of 0. +.Pp +The +.Fn fido_credman_set_dev_rk +function updates the credential pointed to by +.Fa cred +in +.Fa dev . +The credential id and user id attributes of +.Fa cred +must be set. +See +.Xr fido_cred_set_id 3 +and +.Xr fido_cred_set_user 3 +for details. +Only a credential's user attributes (name, display name) +may be updated at this time. +.Pp +The +.Fn fido_credman_del_dev_rk +function deletes the resident credential identified by +.Fa cred_id +from +.Fa dev , +where +.Fa cred_id +points to +.Fa cred_id_len +bytes. +A valid +.Fa pin +must be provided. +.Pp +The +.Vt fido_credman_rp_t +type abstracts information about a relying party. +.Pp +The +.Fn fido_credman_rp_new +function returns a pointer to a newly allocated, empty +.Vt fido_credman_rp_t +type. +If memory cannot be allocated, NULL is returned. +.Pp +The +.Fn fido_credman_rp_free +function releases the memory backing +.Fa *rp_p , +where +.Fa *rp_p +must have been previously allocated by +.Fn fido_credman_rp_new . +On return, +.Fa *rp_p +is set to NULL. +Either +.Fa rp_p +or +.Fa *rp_p +may be NULL, in which case +.Fn fido_credman_rp_free +is a NOP. +.Pp +The +.Fn fido_credman_get_dev_rp +function populates +.Fa rp +with information about relying parties with resident credentials +in +.Fa dev . +A valid +.Fa pin +must be provided. +.Pp +The +.Fn fido_credman_rp_count +function returns the number of relying parties in +.Fa rp . +.Pp +The +.Fn fido_credman_rp_id +and +.Fn fido_credman_rp_name +functions return pointers to the id and name of relying party +.Fa idx +in +.Fa rp . +If not NULL, the values returned by these functions point to +NUL-terminated UTF-8 strings. +Please note that the first relying party in +.Fa rp +has an +.Fa idx +(index) value of 0. +.Pp +The +.Fn fido_credman_rp_id_hash_ptr +function returns a pointer to the hashed id of relying party +.Fa idx +in +.Fa rp . +The corresponding length can be obtained by +.Fn fido_credman_rp_id_hash_len . +Please note that the first relying party in +.Fa rp +has an +.Fa idx +(index) value of 0. +.Sh RETURN VALUES +The +.Fn fido_credman_get_dev_metadata , +.Fn fido_credman_get_dev_rk , +.Fn fido_credman_set_dev_rk , +.Fn fido_credman_del_dev_rk , +and +.Fn fido_credman_get_dev_rp +functions return +.Dv FIDO_OK +on success. +On error, a different error code defined in +.In fido/err.h +is returned. +Functions returning pointers are not guaranteed to succeed, and +should have their return values checked for NULL. +.Sh SEE ALSO +.Xr fido_cbor_info_new 3 , +.Xr fido_cred_new 3 , +.Xr fido_dev_supports_credman 3 +.Sh CAVEATS +Resident credentials are called +.Dq discoverable credentials +in CTAP 2.1. |