1/*
2 * Copyright (c) 2018 Thomas Pornin <pornin@bolet.org>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24
25#include "inner.h"
26
27#if BR_INT128 || BR_UMUL128
28
29/* see bearssl_rsa.h */
30uint32_t
31br_rsa_i62_oaep_decrypt(const br_hash_class *dig,
32	const void *label, size_t label_len,
33	const br_rsa_private_key *sk, void *data, size_t *len)
34{
35	uint32_t r;
36
37	if (*len != ((sk->n_bitlen + 7) >> 3)) {
38		return 0;
39	}
40	r = br_rsa_i62_private(data, sk);
41	r &= br_rsa_oaep_unpad(dig, label, label_len, data, len);
42	return r;
43}
44
45/* see bearssl_rsa.h */
46br_rsa_oaep_decrypt
47br_rsa_i62_oaep_decrypt_get(void)
48{
49	return &br_rsa_i62_oaep_decrypt;
50}
51
52#else
53
54/* see bearssl_rsa.h */
55br_rsa_oaep_decrypt
56br_rsa_i62_oaep_decrypt_get(void)
57{
58	return 0;
59}
60
61#endif
62