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-rw-r--r--src/test/fuzz/script_sigcache.cpp45
1 files changed, 45 insertions, 0 deletions
diff --git a/src/test/fuzz/script_sigcache.cpp b/src/test/fuzz/script_sigcache.cpp
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+++ b/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 CAmount 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));
+ }
+ }
+}