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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_expmod_target.cc | |
parent | dc1565216a5d20ae0d75872151523252309a1292 (diff) | |
download | nss-f95d45c36e7c7131747259956821d844e8952e5d.tar.gz |
Diffstat (limited to 'nss/fuzz/mpi_expmod_target.cc')
-rw-r--r-- | nss/fuzz/mpi_expmod_target.cc | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/nss/fuzz/mpi_expmod_target.cc b/nss/fuzz/mpi_expmod_target.cc new file mode 100644 index 0000000..ed31da3 --- /dev/null +++ b/nss/fuzz/mpi_expmod_target.cc @@ -0,0 +1,27 @@ +/* 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 + + auto modulus = get_modulus(data, size, ctx); + // Compare with OpenSSL exp mod + m1 = &std::get<1>(modulus); + assert(mp_exptmod(&a, &b, m1, &c) == MP_OKAY); + (void)BN_mod_exp(C, A, B, std::get<0>(modulus), ctx); + check_equal(C, &c, 2 * max_size); + + CLEANUP_AND_RETURN +} |