1 /*- 2 * Copyright (c) 2017-2021 Ribose Inc. 3 * Copyright (c) 2012 Alistair Crooks <agc@NetBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef RNP_BN_H_ 28 #define RNP_BN_H_ 29 30 #include <stdio.h> 31 #include <stdint.h> 32 #include "config.h" 33 #include "mpi.h" 34 35 #if defined(CRYPTO_BACKEND_OPENSSL) 36 #include <openssl/bn.h> 37 38 #define bignum_t BIGNUM 39 #elif defined(CRYPTO_BACKEND_BOTAN) 40 typedef struct botan_mp_struct *botan_mp_t; 41 typedef struct bignum_t_st { 42 botan_mp_t mp; 43 } bignum_t; 44 45 #define BN_HANDLE(x) ((x).mp) 46 #define BN_HANDLE_PTR(x) ((x)->mp) 47 #else 48 #error "Unknown crypto backend." 49 #endif 50 51 /*********************************/ 52 53 bignum_t *bn_new(void); 54 void bn_free(bignum_t * /*a*/); 55 56 int bn_bn2bin(const bignum_t * /*a*/, unsigned char * /*b*/); 57 58 bignum_t *mpi2bn(const pgp_mpi_t *val); 59 60 bool bn2mpi(const bignum_t *bn, pgp_mpi_t *val); 61 62 size_t bn_num_bytes(const bignum_t &a); 63 64 #endif 65