55 lines
1.8 KiB
C++
55 lines
1.8 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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// Result of parsing a decrypted AuthorizationResponse payload as specified
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// in ETSI TS 102 941 §6.2.3.3.2.
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struct AuthorizationResponse
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{
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// Response code from InnerAtResponse. Parsing succeeds regardless of
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// the code value; the caller decides how to act on non-ok results.
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AuthorizationResponseCode code;
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// requestHash from InnerAtResponse (SHA-256 prefix of the request).
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ByteBuffer request_hash;
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// New Authorization Ticket returned by the AA. Present iff the parser
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// was able to decode a certificate; the caller must still check that
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// `code` is `ok` before relying on it.
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boost::optional<Certificate> certificate;
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};
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/**
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* Parse a decrypted AuthorizationResponse per TS 102 941 §6.2.3.3.2.
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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(aa_certificate)
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* - tbsData.headerInfo.psid == aid::SCR
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* - outer signature verifies against aa_certificate
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* - inner EtsiTs102941Data.version == v1
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* - inner content variant is authorizationResponse
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*
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* If `code == ok` the message MUST carry a certificate per TS 102 941;
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* for non-ok codes the parser returns normally with whatever certificate
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* (if any) was provided.
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*
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* \throws DecodingFailure on structural failure or missing required certificate
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* \throws VerificationFailure on signer-digest or signature mismatch
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*/
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AuthorizationResponse parse_authorization_response(SecurityModule& security, const ByteBuffer& decrypted,
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const Certificate& aa_certificate);
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} // namespace pki
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} // namespace vanetza
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