Differential D9111 Diff 27433 src/test/fuzz/script_sigcache.cpp

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src/test/fuzz/script_sigcache.cpp

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				// 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 <chainparams.h>
				#include <chainparamsbase.h>
				#include <key.h>
				#include <pubkey.h>
				#include <script/sigcache.h>

				#include <test/fuzz/FuzzedDataProvider.h>
				#include <test/fuzz/fuzz.h>
				#include <test/fuzz/util.h>

				#include <cstdint>
				#include <optional>
				#include <string>
				#include <vector>

				void initialize() {
				static const ECCVerifyHandle ecc_verify_handle;
				ECC_Start();
				SelectParams(CBaseChainParams::REGTEST);
				InitSignatureCache();
				}

				void test_one_input(const std::vector<uint8_t> &buffer) {
				FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());

				const std::optional<CMutableTransaction> mutable_transaction =
				ConsumeDeserializable<CMutableTransaction>(fuzzed_data_provider);
				const CTransaction tx = mutable_transaction
				? CTransaction{*mutable_transaction}
				: CTransaction{};
				const unsigned int n_in =
				fuzzed_data_provider.ConsumeIntegral<unsigned int>();
				const Amount amount = ConsumeMoney(fuzzed_data_provider);
				const bool store = fuzzed_data_provider.ConsumeBool();
				PrecomputedTransactionData tx_data;
				CachingTransactionSignatureChecker caching_transaction_signature_checker{
				mutable_transaction ? &tx : nullptr, n_in, amount, store, tx_data};
				const std::optional<CPubKey> pub_key =
				ConsumeDeserializable<CPubKey>(fuzzed_data_provider);
				if (pub_key) {
				const std::vector<uint8_t> random_bytes =
				ConsumeRandomLengthByteVector(fuzzed_data_provider);
				if (!random_bytes.empty()) {
				(void)caching_transaction_signature_checker.VerifySignature(
				random_bytes, *pub_key, ConsumeUInt256(fuzzed_data_provider));
				}
				}
				}