| /* 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 |
| |
| // We can't divide by 0. |
| if (mp_cmp_z(&b) == 0) { |
| CLEANUP_AND_RETURN |
| } |
| |
| // Compare with OpenSSL division |
| assert(mp_div(&a, &b, &c, &r) == MP_OKAY); |
| BN_div(C, R, A, B, ctx); |
| check_equal(C, &c, max_size); |
| check_equal(R, &r, max_size); |
| |
| // Check c * b + r == a |
| assert(mp_mul(&c, &b, &c) == MP_OKAY); |
| assert(mp_add(&c, &r, &c) == MP_OKAY); |
| assert(mp_cmp(&c, &a) == 0); |
| |
| CLEANUP_AND_RETURN |
| } |
