xref: /freebsd/contrib/bearssl/src/rsa/rsa_i62_pkcs1_sign.c (revision dd41de95a84d979615a2ef11df6850622bf6184e)
1 /*
2  * Copyright (c) 2017 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 */
30 uint32_t
31 br_rsa_i62_pkcs1_sign(const unsigned char *hash_oid,
32 	const unsigned char *hash, size_t hash_len,
33 	const br_rsa_private_key *sk, unsigned char *x)
34 {
35 	if (!br_rsa_pkcs1_sig_pad(hash_oid, hash, hash_len, sk->n_bitlen, x)) {
36 		return 0;
37 	}
38 	return br_rsa_i62_private(x, sk);
39 }
40 
41 /* see bearssl_rsa.h */
42 br_rsa_pkcs1_sign
43 br_rsa_i62_pkcs1_sign_get(void)
44 {
45 	return &br_rsa_i62_pkcs1_sign;
46 }
47 
48 #else
49 
50 /* see bearssl_rsa.h */
51 br_rsa_pkcs1_sign
52 br_rsa_i62_pkcs1_sign_get(void)
53 {
54 	return 0;
55 }
56 
57 #endif
58