bitcoin/src/test/fuzz/base_encode_decode.cpp

// Copyright (c) 2019 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 <test/fuzz/fuzz.h>

#include <base58.h>
#include <util/string.h>
#include <util/strencodings.h>

#include <cassert>
#include <cstdint>
#include <string>
#include <vector>

void test_one_input(const std::vector<uint8_t>& buffer)
{
    const std::string random_encoded_string(buffer.begin(), buffer.end());

    std::vector<unsigned char> decoded;
    if (DecodeBase58(random_encoded_string, decoded, 100)) {
        const std::string encoded_string = EncodeBase58(decoded);
        assert(encoded_string == TrimString(encoded_string));
        assert(ToLower(encoded_string) == ToLower(TrimString(random_encoded_string)));
    }

    if (DecodeBase58Check(random_encoded_string, decoded, 100)) {
        const std::string encoded_string = EncodeBase58Check(decoded);
        assert(encoded_string == TrimString(encoded_string));
        assert(ToLower(encoded_string) == ToLower(TrimString(random_encoded_string)));
    }

    bool pf_invalid;
    std::string decoded_string = DecodeBase32(random_encoded_string, &pf_invalid);
    if (!pf_invalid) {
        const std::string encoded_string = EncodeBase32(decoded_string);
        assert(encoded_string == TrimString(encoded_string));
        assert(ToLower(encoded_string) == ToLower(TrimString(random_encoded_string)));
    }

    decoded_string = DecodeBase64(random_encoded_string, &pf_invalid);
    if (!pf_invalid) {
        const std::string encoded_string = EncodeBase64(decoded_string);
        assert(encoded_string == TrimString(encoded_string));
        assert(ToLower(encoded_string) == ToLower(TrimString(random_encoded_string)));
    }
}