Files
Ashin Walpola d107534eb2 Keep vanetza-idf in obu-firmware, so a plain clone builds the firmware
obu-firmware builds against the vanetza-idf C-ITS library, which until now
came from the colleague's microbu-esp32c5 tree beside the repository and was
not tracked here, so a clone of this repository could not build the firmware
it ships. The library alone is now part of obu-firmware, as
obu-firmware/external/vanetza-idf: their external/vanetza-idf at commit
cf4b99f, unchanged (9775 files; see its PROVENANCE.md). CMake takes it from
there by default; -DVANETZA_IDF_DIR still points the build elsewhere.

The rest of the colleague's tree (their own VAM firmware, PKI tooling,
station-link Python tools, the V2X2MAP bridge) stays out of this repository
and gitignored; nothing is pushed to their repository. NOTES.md, docs/06,
TODO.md and the pcap verifier's usage line point at the new location.
2026-09-24 10:56:05 +02:00

45 lines
1.1 KiB
C++

#pragma once
#include <vanetza/common/byte_buffer.hpp>
#include <vanetza/security/hash_algorithm.hpp>
#include <vanetza/security/key_type.hpp>
namespace vanetza
{
namespace security
{
// forward declarations
class Backend;
namespace v3
{
// forward declarations
class CertificateView;
/**
* Calculate message hash (combination of hashes).
*
* This function creates the message hash according to IEEE 1609.2 cause 5.3.1.2.2
* for verification type "certificate", i.e. not "self-signed" messages.
*
* \param backend backend for cryptographic operations
* \param algo hash algorithm
* \param data message payload (data to be signed)
* \param signing certificate used for signing
* \return message digest
*/
ByteBuffer calculate_message_hash(Backend&, HashAlgorithm, const ByteBuffer& data, const CertificateView& signing);
/**
* Determine the hash algorithm for a given key type.
* \see IEEE 1609.2 clause 5.3.1.2.2 rule a)
* \param key_type key type
* \return suitable hash algorithm
*/
HashAlgorithm specified_hash_algorithm(KeyType key_type);
} // namespace v3
} // namespace security
} // namespace vanetza