56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
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#pragma once
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#include <vanetza/security/hashed_id.hpp>
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#include <unordered_map>
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#include <unordered_set>
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namespace vanetza
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{
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namespace security
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{
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namespace v3
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{
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/**
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* Lookup for HashedId8-style certificate revocation.
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*
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* Backs the chain-walk performed by DefaultCertificateValidator: for every
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* non-root certificate the validator encounters while walking up the chain,
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* it asks whether that certificate has been revoked by a CRL signed by its
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* issuer.
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*
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* Linkage-value CRLs (TS 102 941 ToBeSignedLinkageValueCrl) are out of scope:
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* the European C-ITS Certificate Policy does not revoke ATs, and revoking CAs
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* only ever needs HashedId8 entries.
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*/
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class RevocationLookup
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{
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public:
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virtual ~RevocationLookup() = default;
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/**
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* \param issuer HashedId8 of the CA whose CRL is consulted
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* \param cert HashedId8 of the certificate being checked
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* \return true iff the CRL signed by \p issuer lists \p cert as revoked
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*/
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virtual bool is_revoked(const HashedId8& issuer, const HashedId8& cert) const = 0;
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};
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/**
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* In-memory RevocationLookup, indexed by issuer HashedId8.
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*/
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class RevocationMemoryLookup : public RevocationLookup
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{
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public:
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void revoke(const HashedId8& issuer, const HashedId8& cert);
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void clear(const HashedId8& issuer);
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bool is_revoked(const HashedId8& issuer, const HashedId8& cert) const override;
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private:
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std::unordered_map<HashedId8, std::unordered_set<HashedId8>> m_revoked;
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};
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} // namespace v3
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} // namespace security
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} // namespace vanetza
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