Function HexStr

src/crypto/hex_base.cpp:30–44

} // namespace

std::string HexStr(const std::span<const uint8_t> s)
{
    std::string rv(s.size() * 2, '\0');
    static constexpr auto byte_to_hex = CreateByteToHexMap();
    static_assert(sizeof(byte_to_hex) == 512);

    char* it = rv.data();
    for (uint8_t v : s) {
        std::memcpy(it, byte_to_hex[v].data(), 2);
        it += 2;
    }

    assert(it == rv.data() + rv.size());
    return rv;
}

const signed char p_util_hexdigit[256] =
{ -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,