1*0957b409SSimon J. Gerraty /*
2*0957b409SSimon J. Gerraty * Copyright (c) 2018 Thomas Pornin <pornin@bolet.org>
3*0957b409SSimon J. Gerraty *
4*0957b409SSimon J. Gerraty * Permission is hereby granted, free of charge, to any person obtaining
5*0957b409SSimon J. Gerraty * a copy of this software and associated documentation files (the
6*0957b409SSimon J. Gerraty * "Software"), to deal in the Software without restriction, including
7*0957b409SSimon J. Gerraty * without limitation the rights to use, copy, modify, merge, publish,
8*0957b409SSimon J. Gerraty * distribute, sublicense, and/or sell copies of the Software, and to
9*0957b409SSimon J. Gerraty * permit persons to whom the Software is furnished to do so, subject to
10*0957b409SSimon J. Gerraty * the following conditions:
11*0957b409SSimon J. Gerraty *
12*0957b409SSimon J. Gerraty * The above copyright notice and this permission notice shall be
13*0957b409SSimon J. Gerraty * included in all copies or substantial portions of the Software.
14*0957b409SSimon J. Gerraty *
15*0957b409SSimon J. Gerraty * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16*0957b409SSimon J. Gerraty * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17*0957b409SSimon J. Gerraty * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18*0957b409SSimon J. Gerraty * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19*0957b409SSimon J. Gerraty * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20*0957b409SSimon J. Gerraty * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21*0957b409SSimon J. Gerraty * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22*0957b409SSimon J. Gerraty * SOFTWARE.
23*0957b409SSimon J. Gerraty */
24*0957b409SSimon J. Gerraty
25*0957b409SSimon J. Gerraty #include "inner.h"
26*0957b409SSimon J. Gerraty
27*0957b409SSimon J. Gerraty #if BR_INT128 || BR_UMUL128
28*0957b409SSimon J. Gerraty
29*0957b409SSimon J. Gerraty /* see bearssl_rsa.h */
30*0957b409SSimon J. Gerraty uint32_t
br_rsa_i62_pss_vrfy(const unsigned char * x,size_t xlen,const br_hash_class * hf_data,const br_hash_class * hf_mgf1,const void * hash,size_t salt_len,const br_rsa_public_key * pk)31*0957b409SSimon J. Gerraty br_rsa_i62_pss_vrfy(const unsigned char *x, size_t xlen,
32*0957b409SSimon J. Gerraty const br_hash_class *hf_data, const br_hash_class *hf_mgf1,
33*0957b409SSimon J. Gerraty const void *hash, size_t salt_len, const br_rsa_public_key *pk)
34*0957b409SSimon J. Gerraty {
35*0957b409SSimon J. Gerraty unsigned char sig[BR_MAX_RSA_SIZE >> 3];
36*0957b409SSimon J. Gerraty
37*0957b409SSimon J. Gerraty if (xlen > (sizeof sig)) {
38*0957b409SSimon J. Gerraty return 0;
39*0957b409SSimon J. Gerraty }
40*0957b409SSimon J. Gerraty memcpy(sig, x, xlen);
41*0957b409SSimon J. Gerraty if (!br_rsa_i62_public(sig, xlen, pk)) {
42*0957b409SSimon J. Gerraty return 0;
43*0957b409SSimon J. Gerraty }
44*0957b409SSimon J. Gerraty return br_rsa_pss_sig_unpad(hf_data, hf_mgf1,
45*0957b409SSimon J. Gerraty hash, salt_len, pk, sig);
46*0957b409SSimon J. Gerraty }
47*0957b409SSimon J. Gerraty
48*0957b409SSimon J. Gerraty /* see bearssl_rsa.h */
49*0957b409SSimon J. Gerraty br_rsa_pss_vrfy
br_rsa_i62_pss_vrfy_get(void)50*0957b409SSimon J. Gerraty br_rsa_i62_pss_vrfy_get(void)
51*0957b409SSimon J. Gerraty {
52*0957b409SSimon J. Gerraty return &br_rsa_i62_pss_vrfy;
53*0957b409SSimon J. Gerraty }
54*0957b409SSimon J. Gerraty
55*0957b409SSimon J. Gerraty #else
56*0957b409SSimon J. Gerraty
57*0957b409SSimon J. Gerraty /* see bearssl_rsa.h */
58*0957b409SSimon J. Gerraty br_rsa_pss_vrfy
br_rsa_i62_pss_vrfy_get(void)59*0957b409SSimon J. Gerraty br_rsa_i62_pss_vrfy_get(void)
60*0957b409SSimon J. Gerraty {
61*0957b409SSimon J. Gerraty return 0;
62*0957b409SSimon J. Gerraty }
63*0957b409SSimon J. Gerraty
64*0957b409SSimon J. Gerraty #endif
65