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author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2017-06-08 10:53:01 +0000 |
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committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2017-06-08 10:53:01 +0000 |
commit | f95d45c36e7c7131747259956821d844e8952e5d (patch) | |
tree | eee14f8b212c48f8597c2a4927a167fcc3a15ea5 /nss/fuzz/mpi_add_target.cc | |
parent | dc1565216a5d20ae0d75872151523252309a1292 (diff) | |
download | nss-f95d45c36e7c7131747259956821d844e8952e5d.tar.gz |
Diffstat (limited to 'nss/fuzz/mpi_add_target.cc')
-rw-r--r-- | nss/fuzz/mpi_add_target.cc | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/nss/fuzz/mpi_add_target.cc b/nss/fuzz/mpi_add_target.cc new file mode 100644 index 0000000..3ebad37 --- /dev/null +++ b/nss/fuzz/mpi_add_target.cc @@ -0,0 +1,42 @@ +/* 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 +} |