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 FLASHING.md says how to take a newer version of the colleague's tree (copy it over the folder, rebuild, test, commit).
77 lines
2.4 KiB
C++
77 lines
2.4 KiB
C++
#ifndef BACKEND_CRYPTOPP_HPP_JQWA9MLZ
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#define BACKEND_CRYPTOPP_HPP_JQWA9MLZ
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#include <vanetza/security/backend.hpp>
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#include <cryptopp/eccrypto.h>
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#include <cryptopp/osrng.h>
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#include <cryptopp/sha.h>
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namespace vanetza
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{
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namespace security
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{
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class BackendCryptoPP : public Backend
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{
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public:
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using Ecdsa256 = CryptoPP::ECDSA<CryptoPP::ECP, CryptoPP::SHA256>;
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using Ecdsa384 = CryptoPP::ECDSA<CryptoPP::ECP, CryptoPP::SHA384>;
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static constexpr auto backend_name = "CryptoPP";
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BackendCryptoPP();
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/// \see Backend::sign_data
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EcdsaSignature sign_data(const ecdsa256::PrivateKey& private_key, const ByteBuffer& data_buffer) override;
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/// \see Backend::sign_digest
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Signature sign_digest(const PrivateKey&, const ByteBuffer& digest) override;
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/// \see Backend::verify_data
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bool verify_data(const ecdsa256::PublicKey& public_key, const ByteBuffer& data, const EcdsaSignature& sig) override;
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/// \see Backend::verify_digest
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bool verify_digest(const PublicKey&, const ByteBuffer& digest, const Signature&) override;
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/// \see Backend::decompress_point
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boost::optional<Uncompressed> decompress_point(const EccPoint& ecc_point) override;
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/// \see Backend::calculate_hash
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ByteBuffer calculate_hash(HashAlgorithm, const ByteBuffer&) override;
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/// \see Backend::generate_key_pair
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ecdsa256::KeyPair generate_key_pair() override;
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private:
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/// internal sign method using crypto++ private key
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EcdsaSignature sign_data(const Ecdsa256::PrivateKey& key, const ByteBuffer& data);
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/// internal verify method using crypto++ public key
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bool verify_data(const Ecdsa256::PublicKey& key, const ByteBuffer& data, const ByteBuffer& sig);
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/// create private key
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Ecdsa256::PrivateKey generate_private_key();
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/// derive public key from private key
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Ecdsa256::PublicKey generate_public_key(const Ecdsa256::PrivateKey&);
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/// adapt generic public key to internal structure
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Ecdsa256::PublicKey internal_public_key(const ecdsa256::PublicKey&);
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/// adapt generic private key to internal structure
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Ecdsa256::PrivateKey internal_private_key(const ecdsa256::PrivateKey&);
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CryptoPP::AutoSeededRandomPool m_prng;
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};
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namespace cryptopp
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{
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/// Derive the public key from a private key (pub = priv * G), on the key's own curve.
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PublicKey derive_public_key(const PrivateKey& private_key);
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} // namespace cryptopp
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} // namespace security
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} // namespace vanetza
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#endif /* BACKEND_CRYPTOPP_HPP_JQWA9MLZ */
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