| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| /* |
| * This target fuzzes NSS mpi against openssl bignum. |
| * It therefore requires openssl to be installed. |
| */ |
| |
| #include "mpi_helper.h" |
| |
| extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { |
| // We require at least size 3 to get two integers from Data. |
| if (size < 3) { |
| return 0; |
| } |
| INIT_FOUR_NUMBERS |
| |
| // Compare with OpenSSL addition |
| assert(mp_add(&a, &b, &c) == MP_OKAY); |
| (void)BN_add(C, A, B); |
| check_equal(C, &c, max_size); |
| |
| // Check a + b == a - -b |
| mp_neg(&b, &b); |
| assert(mp_sub(&a, &b, &r) == MP_OKAY); |
| bool eq = mp_cmp(&r, &c) == 0; |
| if (!eq) { |
| char rC[max_size], cC[max_size], aC[max_size], bC[max_size]; |
| mp_tohex(&r, rC); |
| mp_tohex(&c, cC); |
| mp_tohex(&a, aC); |
| mp_tohex(&b, bC); |
| std::cout << "a = " << std::hex << aC << std::endl; |
| std::cout << "-b = " << std::hex << bC << std::endl; |
| std::cout << "a + b = " << std::hex << cC << std::endl; |
| std::cout << "a - -b = " << std::hex << rC << std::endl; |
| } |
| assert(eq); |
| |
| CLEANUP_AND_RETURN |
| } |