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 */ 30 uint32_t 31 br_rsa_i62_pss_vrfy(const unsigned char *x, size_t xlen, 32 const br_hash_class *hf_data, const br_hash_class *hf_mgf1, 33 const void *hash, size_t salt_len, const br_rsa_public_key *pk) 34 { 35 unsigned char sig[BR_MAX_RSA_SIZE >> 3]; 36 37 if (xlen > (sizeof sig)) { 38 return 0; 39 } 40 memcpy(sig, x, xlen); 41 if (!br_rsa_i62_public(sig, xlen, pk)) { 42 return 0; 43 } 44 return br_rsa_pss_sig_unpad(hf_data, hf_mgf1, 45 hash, salt_len, pk, sig); 46 } 47 48 /* see bearssl_rsa.h */ 49 br_rsa_pss_vrfy 50 br_rsa_i62_pss_vrfy_get(void) 51 { 52 return &br_rsa_i62_pss_vrfy; 53 } 54 55 #else 56 57 /* see bearssl_rsa.h */ 58 br_rsa_pss_vrfy 59 br_rsa_i62_pss_vrfy_get(void) 60 { 61 return 0; 62 } 63 64 #endif 65