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Merge #18783: tests: Add fuzzing harness for MessageSign, MessageVerify and other functions in util/message.h

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38e49ded8b tests: Add fuzzing harness for MessageSign, MessageVerify and other functions in util/message.h (practicalswift)

Pull request description:

  Add fuzzing harness for `MessageSign`, `MessageVerify` and other functions in `util/message.h`.

  See [`doc/fuzzing.md`](https://github.com/bitcoin/bitcoin/blob/master/doc/fuzzing.md) for information on how to fuzz Bitcoin Core. Don't forget to contribute any coverage increasing inputs you find to the [Bitcoin Core fuzzing corpus repo](https://github.com/bitcoin-core/qa-assets).

  Happy fuzzing :)

ACKs for top commit:
  vasild:
    utACK 38e49ded8b

Tree-SHA512: 4f83718365d9c7e772a4ccecb31817bf17117efae2bfaf6e9618ff17908def0c8b97b5fa2504d51ab38b2e6f82c046178dd751495cc37ab4779c0b1ac1a4d211
This commit is contained in:
MarcoFalke
2020-05-04 09:02:15 -04:00
parent 74a1152f25 38e49ded8b
commit 0a729b0e42
2 changed files with 55 additions and 0 deletions
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48
src/test/fuzz/message.cpp Normal file
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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 <key_io.h>
#include <optional.h>
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <util/message.h>
#include <util/strencodings.h>
#include <cassert>
#include <cstdint>
#include <iostream>
#include <string>
#include <vector>
void initialize()
{
static const ECCVerifyHandle ecc_verify_handle;
ECC_Start();
SelectParams(CBaseChainParams::REGTEST);
}
void test_one_input(const std::vector<uint8_t>& buffer)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
const std::string random_message = fuzzed_data_provider.ConsumeRandomLengthString(1024);
{
const std::vector<uint8_t> random_bytes = ConsumeRandomLengthByteVector(fuzzed_data_provider);
CKey private_key;
private_key.Set(random_bytes.begin(), random_bytes.end(), fuzzed_data_provider.ConsumeBool());
std::string signature;
const bool message_signed = MessageSign(private_key, random_message, signature);
if (private_key.IsValid()) {
assert(message_signed);
const MessageVerificationResult verification_result = MessageVerify(EncodeDestination(PKHash(private_key.GetPubKey().GetID())), signature, random_message);
assert(verification_result == MessageVerificationResult::OK);
}
}
{
(void)MessageHash(random_message);
(void)MessageVerify(fuzzed_data_provider.ConsumeRandomLengthString(1024), fuzzed_data_provider.ConsumeRandomLengthString(1024), random_message);
(void)SigningResultString(fuzzed_data_provider.PickValueInArray({SigningResult::OK, SigningResult::PRIVATE_KEY_NOT_AVAILABLE, SigningResult::SIGNING_FAILED}));
}
}