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