bitcoin/src/test/fuzz/crypto_hkdf_hmac_sha256_l32.cpp
Andrew Poelstra 214d9055ac fuzz: replace every fuzzer-controlled loop with a LIMITED_WHILE loop
Blindly chose a cap of 10000 iterations for every loop, except for
the two in script_ops.cpp and scriptnum_ops.cpp which appeared to
(sometimes) be deserializing individual bytes; capped those to one
million to ensure that sometimes we try working with massive scripts.

There was also one fuzzer-controlled loop in timedata.cpp which was
already capped, so I left that alone.

git grep 'while (fuzz' should now run clean except for timedata.cpp
2021-11-12 19:51:55 +00:00

25 lines
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C++

// Copyright (c) 2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <crypto/hkdf_sha256_32.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <cstdint>
#include <string>
#include <vector>
FUZZ_TARGET(crypto_hkdf_hmac_sha256_l32)
{
FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
const std::vector<uint8_t> initial_key_material = ConsumeRandomLengthByteVector(fuzzed_data_provider);
CHKDF_HMAC_SHA256_L32 hkdf_hmac_sha256_l32(initial_key_material.data(), initial_key_material.size(), fuzzed_data_provider.ConsumeRandomLengthString(1024));
LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
std::vector<uint8_t> out(32);
hkdf_hmac_sha256_l32.Expand32(fuzzed_data_provider.ConsumeRandomLengthString(128), out.data());
}
}