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59c0ece0a7
Use bech32::CharLimit::BECH32 and bech32::CHECKSUM_SIZE instead of hardcoded values. This is a follow-up fix for #34007 (where this file was missed)
44 lines
1.7 KiB
C++
44 lines
1.7 KiB
C++
// Copyright (c) 2019-2021 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 <bech32.h>
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#include <test/fuzz/fuzz.h>
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#include <test/util/str.h>
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#include <util/strencodings.h>
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#include <cassert>
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#include <cstdint>
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#include <string>
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#include <utility>
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#include <vector>
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FUZZ_TARGET(bech32)
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{
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const std::string random_string(buffer.begin(), buffer.end());
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const auto r1 = bech32::Decode(random_string);
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if (r1.hrp.empty()) {
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assert(r1.encoding == bech32::Encoding::INVALID);
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assert(r1.data.empty());
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} else {
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assert(r1.encoding != bech32::Encoding::INVALID);
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const std::string reencoded = bech32::Encode(r1.encoding, r1.hrp, r1.data);
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assert(CaseInsensitiveEqual(random_string, reencoded));
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}
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std::vector<unsigned char> input;
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ConvertBits<8, 5, true>([&](unsigned char c) { input.push_back(c); }, buffer.begin(), buffer.end());
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// Input data part + 3 characters for the HRP and separator (bc1) + the checksum characters
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if (input.size() + 3 + bech32::CHECKSUM_SIZE <= bech32::CharLimit::BECH32) {
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// If it's possible to encode input in Bech32(m) without exceeding the bech32-character limit:
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for (auto encoding : {bech32::Encoding::BECH32, bech32::Encoding::BECH32M}) {
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const std::string encoded = bech32::Encode(encoding, "bc", input);
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assert(!encoded.empty());
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const auto r2 = bech32::Decode(encoded);
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assert(r2.encoding == encoding);
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assert(r2.hrp == "bc");
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assert(r2.data == input);
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}
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}
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}
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