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 FLASHING.md says how to take a newer version of the colleague's tree (copy it over the folder, rebuild, test, commit).
79 lines
1.8 KiB
C++
79 lines
1.8 KiB
C++
#include <vanetza/common/byte_sequence.hpp>
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#include <vanetza/security/backend_null.hpp>
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#include <vanetza/security/public_key.hpp>
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#include <vanetza/security/signature.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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EcdsaSignature BackendNull::sign_data(const ecdsa256::PrivateKey&, const ByteBuffer&)
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{
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static const EcdsaSignature fake = fake_signature();
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return fake;
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}
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Signature BackendNull::sign_digest(const PrivateKey&, const ByteBuffer&)
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{
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static const Signature empty {};
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return empty;
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}
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bool BackendNull::verify_data(const ecdsa256::PublicKey&, const ByteBuffer&, const EcdsaSignature&)
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{
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// accept everything
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return true;
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}
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bool BackendNull::verify_digest(const PublicKey&, const ByteBuffer&, const Signature&)
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{
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// accept everything
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return true;
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}
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boost::optional<Uncompressed> BackendNull::decompress_point(const EccPoint&)
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{
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return boost::none;
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}
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EcdsaSignature BackendNull::fake_signature() const
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{
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constexpr std::size_t size = 32;
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EcdsaSignature signature;
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X_Coordinate_Only coordinate;
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coordinate.x = random_byte_sequence(size, 0xdead);
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signature.R = coordinate;
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signature.s = random_byte_sequence(size, 0xbeef);
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return signature;
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}
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ByteBuffer BackendNull::calculate_hash(HashAlgorithm algo, const ByteBuffer&)
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{
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ByteBuffer hash;
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switch (algo) {
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case HashAlgorithm::SHA256:
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hash.resize(32);
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break;
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case HashAlgorithm::SHA384:
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hash.resize(48);
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break;
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default:
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break;
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}
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return hash;
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}
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ecdsa256::KeyPair BackendNull::generate_key_pair()
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{
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ecdsa256::KeyPair key_pair;
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key_pair.private_key.key.fill(0);
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key_pair.public_key.x.fill(0);
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key_pair.public_key.y.fill(0);
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return key_pair;
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}
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} // namespace security
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} // namespace vanetza
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