Ashin Walpola
0e9525162d
obu-firmware builds against vanetza-idf from microbu-esp32c5/external, but that tree was gitignored, so a clone of this repository could not build the firmware it ships. It is now committed here as ordinary files in its own folder, microbu-esp32c5/: the colleague's commit cf4b99f plus the V2X2MAP bridge's signature verification (--trust) used on the bench. Nothing is fetched from or pushed to the colleague's repository; this repository and its remotes carry everything. The folder's own .gitignore keeps build output, downloaded components and private key material out, as it did there; the committed file set is identical to that repository's tracked files. The ESP32-C5 is still flashed from obu-firmware/, which only takes vanetza-idf from microbu-esp32c5/, so the two stay separate folders. FLASHING.md says how to take a newer version of the colleague's tree (copy it over the folder, rebuild, test, commit).
92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
#include <vanetza/security/exception.hpp>
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#include <vanetza/security/v2/encryption_parameter.hpp>
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#include <vanetza/security/v2/public_key.hpp>
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#include <boost/variant/apply_visitor.hpp>
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#include <boost/variant/static_visitor.hpp>
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namespace vanetza
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{
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namespace security
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{
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namespace v2
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{
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SymmetricAlgorithm get_type(const EncryptionParameter& param)
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{
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struct Encryption_visitor : public boost::static_visitor<SymmetricAlgorithm>
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{
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SymmetricAlgorithm operator()(const Nonce&)
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{
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return SymmetricAlgorithm::AES128_CCM;
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}
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};
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Encryption_visitor visit;
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return boost::apply_visitor(visit, param);
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}
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void serialize(OutputArchive& ar, const EncryptionParameter& param)
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{
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struct Encryption_visitor : public boost::static_visitor<>
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{
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Encryption_visitor(OutputArchive& ar) :
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m_archive(ar)
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{
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}
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void operator()(const Nonce& nonce)
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{
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for (auto& byte : nonce) {
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m_archive << byte;
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}
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}
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OutputArchive& m_archive;
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};
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SymmetricAlgorithm algo = get_type(param);
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serialize(ar, algo);
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Encryption_visitor visit(ar);
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boost::apply_visitor(visit, param);
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}
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size_t get_size(const EncryptionParameter& param)
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{
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size_t size = sizeof(SymmetricAlgorithm);
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struct Encryption_visitor : public boost::static_visitor<size_t>
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{
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size_t operator()(const Nonce& nonce)
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{
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return nonce.size();
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}
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};
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Encryption_visitor visit;
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size += boost::apply_visitor(visit, param);
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return size;
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}
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size_t deserialize(InputArchive& ar, EncryptionParameter& param)
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{
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SymmetricAlgorithm algo;
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deserialize(ar, algo);
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switch (algo) {
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case SymmetricAlgorithm::AES128_CCM: {
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Nonce nonce;
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for (size_t s = 0; s < nonce.size(); s++) {
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ar >> nonce[s];
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}
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param = nonce;
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break;
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}
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default:
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throw deserialization_error("Unknown Symmetric Algorithm");
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break;
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}
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return get_size(param);
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}
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} // namespace v2
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} // namespace security
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} // namespace vanetza
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