1 .\" Copyright (c) 2018-2022 Yubico AB. All rights reserved.
3 .\" Redistribution and use in source and binary forms, with or without
4 .\" modification, are permitted provided that the following conditions are
7 .\" 1. Redistributions of source code must retain the above copyright
8 .\" notice, this list of conditions and the following disclaimer.
9 .\" 2. Redistributions in binary form must reproduce the above copyright
10 .\" notice, this list of conditions and the following disclaimer in
11 .\" the documentation and/or other materials provided with the
14 .\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
15 .\" "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
16 .\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
17 .\" A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
18 .\" HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
19 .\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
20 .\" LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 .\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 .\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 .\" OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 .\" SPDX-License-Identifier: BSD-2-Clause
28 .Dd $Mdocdate: July 15 2022 $
34 .Nm rs256_pk_from_RSA ,
35 .Nm rs256_pk_from_EVP_PKEY ,
36 .Nm rs256_pk_from_ptr ,
37 .Nm rs256_pk_to_EVP_PKEY
38 .Nd FIDO2 COSE RS256 API
43 .Fn rs256_pk_new "void"
45 .Fn rs256_pk_free "rs256_pk_t **pkp"
47 .Fn rs256_pk_from_EVP_PKEY "rs256_pk_t *pk" "const EVP_PKEY *pkey"
49 .Fn rs256_pk_from_RSA "rs256_pk_t *pk" "const RSA *rsa"
51 .Fn rs256_pk_from_ptr "rs256_pk_t *pk" "const void *ptr" "size_t len"
53 .Fn rs256_pk_to_EVP_PKEY "const rs256_pk_t *pk"
55 RS256 is the name given in the CBOR Object Signing and Encryption
56 (COSE) RFC to PKCS#1.5 2048-bit RSA with SHA-256.
59 is an auxiliary API with routines to convert between the different
60 RSA public key types used in
67 RS256 public keys are abstracted by the
73 function returns a pointer to a newly allocated, empty
76 If memory cannot be allocated, NULL is returned.
80 function releases the memory backing
84 must have been previously allocated by
93 may be NULL, in which case
98 .Fn rs256_pk_from_EVP_PKEY
108 .Fn rs256_pk_from_RSA
118 .Fn rs256_pk_from_ptr
133 .Fn rs256_pk_to_EVP_PKEY
138 type with a reference count of 1.
139 No internal references to the returned pointer are kept.
141 .Fn rs256_pk_to_EVP_PKEY
145 .Fn rs256_pk_from_EVP_PKEY ,
146 .Fn rs256_pk_from_RSA ,
148 .Fn rs256_pk_from_ptr
152 On error, a different error code defined in
159 .Xr fido_assert_verify 3 ,
160 .Xr fido_cred_pubkey_ptr 3