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 FLASHING.md says how to take a newer version of the colleague's tree (copy it over the folder, rebuild, test, commit).
59 lines
2.3 KiB
C++
59 lines
2.3 KiB
C++
#pragma once
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#include "asn1.hpp"
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#include "certificate.hpp"
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#include "keys.hpp"
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#include <vanetza/asn1/asn1c_wrapper.hpp>
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#include <vanetza/asn1/security/EtsiTs103097Certificate.h>
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#include <vanetza/common/clock.hpp>
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#include <vanetza/security/v3/basic_elements.hpp>
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#include <chrono>
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#include <cstdlib>
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namespace vanetza
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{
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namespace pki
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{
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// Minimal certificate built around a given verification key (and optional
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// encryption key). Not TS-compliant (no issuer chain, no permissions, no
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// signature) but just enough that get_public_key/get_encryption_key return our
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// keys and the cert OER-encodes so calculate_hashed_id8 is stable. Intended
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// for unit tests where the cert only needs to act as a key holder + digest
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// source.
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inline Certificate build_stub_certificate(const PublicKey& verify_key, const PublicKey* encryption_key = nullptr,
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Clock::time_point valid_since = Clock::time_point {}, std::chrono::hours validity = std::chrono::hours(24))
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{
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asn1::asn1c_oer_wrapper<Vanetza_Security_EtsiTs103097Certificate_t>
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cert(asn_DEF_Vanetza_Security_EtsiTs103097Certificate);
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cert->version = 3;
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cert->type = Vanetza_Security_CertificateType_explicit;
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cert->issuer.present = Vanetza_Security_IssuerIdentifier_PR_self;
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cert->issuer.choice.self = Vanetza_Security_HashAlgorithm_sha256;
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auto& tbs = cert->toBeSigned;
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tbs.id.present = Vanetza_Security_CertificateId_PR_name;
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OCTET_STRING_fromBuf(&tbs.id.choice.name, "test-cert", 9);
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tbs.cracaId.buf = static_cast<uint8_t*>(std::calloc(3, 1));
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tbs.cracaId.size = 3;
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tbs.crlSeries = 0;
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tbs.validityPeriod.start = security::v3::convert_time32(valid_since);
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tbs.validityPeriod.duration.present = Vanetza_Security_Duration_PR_hours;
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tbs.validityPeriod.duration.choice.hours = validity.count();
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tbs.verifyKeyIndicator.present = Vanetza_Security_VerificationKeyIndicator_PR_verificationKey;
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set_verification_key(tbs.verifyKeyIndicator.choice.verificationKey, verify_key);
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if (encryption_key) {
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tbs.encryptionKey = asn1::allocate<Vanetza_Security_PublicEncryptionKey_t>();
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set_encryption_key(*tbs.encryptionKey, *encryption_key);
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}
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Certificate result;
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ByteBuffer encoded = cert.encode();
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result.decode(encoded);
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return result;
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}
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} // namespace pki
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} // namespace vanetza
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