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+.\" Copyright (c) 2018 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
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+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause
+.\"
+.Dd $Mdocdate: May 23 2018 $
+.Dt FIDO_DEV_MAKE_CRED 3
+.Os
+.Sh NAME
+.Nm fido_dev_make_cred
+.Nd generates a new credential on a FIDO2 device
+.Sh SYNOPSIS
+.In fido.h
+.Ft int
+.Fn fido_dev_make_cred "fido_dev_t *dev" "fido_cred_t *cred" "const char *pin"
+.Sh DESCRIPTION
+The
+.Fn fido_dev_make_cred
+function asks the FIDO2 device represented by
+.Fa dev
+to generate a new credential according to the following parameters
+defined in
+.Fa cred :
+.Pp
+.Bl -dash -compact
+.It
+.Nm type ;
+.It
+.Nm client data hash ;
+.It
+.Nm relying party ;
+.It
+.Nm user attributes ;
+.It
+.Nm list of excluded credential IDs ;
+.It
+.Nm resident/discoverable key and user verification attributes .
+.El
+.Pp
+See
+.Xr fido_cred_set_authdata 3
+for information on how these values are set.
+.Pp
+If a PIN is not needed to authenticate the request against
+.Fa dev ,
+then
+.Fa pin
+may be NULL.
+Otherwise
+.Fa pin
+must point to a NUL-terminated UTF-8 string.
+.Pp
+After a successful call to
+.Fn fido_dev_make_cred ,
+the
+.Xr fido_cred_authdata_ptr 3 ,
+.Xr fido_cred_pubkey_ptr 3 ,
+.Xr fido_cred_x5c_ptr 3 ,
+and
+.Xr fido_cred_sig_ptr 3
+functions may be invoked on
+.Fa cred
+to retrieve the various parts of the generated credential.
+.Pp
+Please note that
+.Fn fido_dev_make_cred
+is synchronous and will block if necessary.
+.Sh RETURN VALUES
+The error codes returned by
+.Fn fido_dev_make_cred
+are defined in
+.In fido/err.h .
+On success,
+.Dv FIDO_OK
+is returned.
+.Sh SEE ALSO
+.Xr fido_cred_new 3 ,
+.Xr fido_cred_set_authdata 3