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_vrfy(const unsigned char *x, size_t xlen, 32 const unsigned char *hash_oid, size_t hash_len, 33 const br_rsa_public_key *pk, unsigned char *hash_out) 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_pkcs1_sig_unpad(sig, xlen, hash_oid, hash_len, hash_out); 45 } 46 47 /* see bearssl_rsa.h */ 48 br_rsa_pkcs1_vrfy 49 br_rsa_i62_pkcs1_vrfy_get(void) 50 { 51 return &br_rsa_i62_pkcs1_vrfy; 52 } 53 54 #else 55 56 /* see bearssl_rsa.h */ 57 br_rsa_pkcs1_vrfy 58 br_rsa_i62_pkcs1_vrfy_get(void) 59 { 60 return 0; 61 } 62 63 #endif 64