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opendht/src/base64.cpp
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2026-01-17 22:25:43 -05:00

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// Copyright (c) 2014-2026 Savoir-faire Linux Inc.
// SPDX-License-Identifier: MIT
#include "base64.h"
#include "utils.h"
#include <simdutf.h>
#include <vector>
#include <cstdint>
#include <cstdlib>
#include <stdexcept>
namespace dht {
using namespace std::literals;
std::string
base64_encode(const std::vector<unsigned char>& str)
{
std::string buffer(simdutf::base64_length_from_binary(str.size()), '\0');
simdutf::binary_to_base64((const char*) str.data(), str.size(), buffer.data());
return buffer;
}
std::vector<unsigned char>
base64_decode(std::string_view str)
{
std::vector<unsigned char> buffer(simdutf::maximal_binary_length_from_base64(str.data(), str.size()));
simdutf::result r = simdutf::base64_to_binary(str.data(), str.size(), (char*) buffer.data());
if (r.error) {
throw std::invalid_argument(concat("Invalid base64 input: "sv, simdutf::error_to_string(r.error)));
} else {
buffer.resize(r.count);
}
return buffer;
}
} // namespace dht