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214d9055ac
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
45 lines
1.9 KiB
C++
45 lines
1.9 KiB
C++
// Copyright (c) 2020-2021 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <crypto/chacha20.h>
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#include <test/fuzz/FuzzedDataProvider.h>
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#include <test/fuzz/fuzz.h>
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#include <test/fuzz/util.h>
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#include <cstdint>
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#include <vector>
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FUZZ_TARGET(crypto_chacha20)
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{
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FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
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ChaCha20 chacha20;
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if (fuzzed_data_provider.ConsumeBool()) {
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const std::vector<unsigned char> key = ConsumeFixedLengthByteVector(fuzzed_data_provider, fuzzed_data_provider.ConsumeIntegralInRange<size_t>(16, 32));
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chacha20 = ChaCha20{key.data(), key.size()};
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}
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LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 10000) {
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CallOneOf(
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fuzzed_data_provider,
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[&] {
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const std::vector<unsigned char> key = ConsumeFixedLengthByteVector(fuzzed_data_provider, fuzzed_data_provider.ConsumeIntegralInRange<size_t>(16, 32));
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chacha20.SetKey(key.data(), key.size());
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},
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[&] {
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chacha20.SetIV(fuzzed_data_provider.ConsumeIntegral<uint64_t>());
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},
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[&] {
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chacha20.Seek(fuzzed_data_provider.ConsumeIntegral<uint64_t>());
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},
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[&] {
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std::vector<uint8_t> output(fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, 4096));
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chacha20.Keystream(output.data(), output.size());
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},
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[&] {
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std::vector<uint8_t> output(fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, 4096));
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const std::vector<uint8_t> input = ConsumeFixedLengthByteVector(fuzzed_data_provider, output.size());
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chacha20.Crypt(input.data(), output.data(), input.size());
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});
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}
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}
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