48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
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#pragma once
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#include "certificate.hpp"
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#include "response_codes.hpp"
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#include <vanetza/common/byte_buffer.hpp>
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#include <boost/optional/optional.hpp>
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namespace vanetza
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{
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namespace pki
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{
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class SecurityModule;
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/**
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* \brief Decoded view of an InnerEcResponse payload.
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* \see TS 102 941 §6.2.3.2.2
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*/
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struct EnrolmentResponse
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{
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EnrolmentResponseCode code; // EA's responseCode; parsing succeeds for any value
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ByteBuffer request_hash; // SHA-256 prefix of the matching request
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boost::optional<Certificate> certificate; // new EC; present iff one was decoded — caller must still check `code == ok`
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};
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/**
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* Parse a decrypted EnrolmentResponse per ETSI TS 102 941 §6.2.3.2.2.
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*
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* Verifies:
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* - outer Ieee1609Dot2Data is signedData
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* - signer = digest, matching HashedId8(ea_certificate)
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* - tbsData.headerInfo.psid == aid::SCR
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* - outer signature verifies against ea_certificate
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* - inner EtsiTs102941Data.version == v1
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* - inner content variant is enrolmentResponse
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*
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* For a non-ok responseCode the function returns normally and `code` holds it;
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* `certificate` is populated iff the response actually contains one.
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*
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* \throws DecodingFailure on structural failure
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* \throws VerificationFailure on signer-digest or signature mismatch
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*/
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EnrolmentResponse parse_enrolment_response(SecurityModule& security, const ByteBuffer& decrypted,
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const Certificate& ea_certificate);
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} // namespace pki
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} // namespace vanetza
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