String.cpp

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#include <sourcepp/crypto/String.h>
 
#include <iomanip>
#include <sstream>
 
#include <cryptopp/hex.h>
 
using namespace sourcepp;
 
std::vector<std::byte> crypto::decodeHexString(std::string_view hex) {
    std::string hexBin;
    CryptoPP::StringSource hexSource{hex.data(), true, new CryptoPP::HexDecoder{new CryptoPP::StringSink{hexBin}}};
 
    std::vector<std::byte> out;
    for (char c : hexBin) {
        out.push_back(static_cast<std::byte>(c));
    }
    return out;
}
 
std::string crypto::encodeHexString(std::span<const std::byte> hex) {
    std::ostringstream oss;
    oss << std::hex << std::setfill('0');
    for (auto byte : hex) {
        oss << std::setw(2) << static_cast<int>(std::to_integer<unsigned char>(byte));
    }
    return oss.str();
}