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Commission Implementing Regulation (EU) 2016/799Show full title
Commission Implementing Regulation (EU) 2016/799 of 18 March 2016 implementing Regulation (EU) No 165/2014 of the European Parliament and of the Council laying down the requirements for the construction, testing, installation, operation and repair of tachographs and their components (Text with EEA relevance)
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- Revised 26/02/202011.25 MB
- Revised 17/04/201810.62 MB
- Revised 26/05/20169.89 MB
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Changes over time for: Division 10.2.1
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10.2.1 Card Certificate Chain Verification by VU U.K.
CSM_157 [F1Vehicle units shall use the protocol depicted in Figure 4 for verifying a tachograph card’s certificate chain. For every certificate it reads from the card, the VU shall verify that the Certificate Holder Authorisation (CHA) field is correct: U.K.
The CHA field of the Card certificate shall indicate a card certificate for mutual authentication (see Appendix 1, data type EquipmentType).
The CHA of the Card.CA certificate shall indicate an MSCA.
The CHA of the Card.Link certificate shall indicate the ERCA.]
Notes to Figure 4: U.K.
—The Card certificates and public keys mentioned in the figure are those for mutual authentication. Section 9.1.5 denotes these as Card_MA.U.K.
—The Card.CA certificates and public keys mentioned in the figure are those for signing card certificates and it is indicated in the CAR of the Card certificate. Section 9.1.3 denotes these as MSCA_Card.U.K.
—The Card.CA.EUR certificate mentioned in the figure is the European root certificate that is indicated in the CAR of the Card.CA certificate.U.K.
—The Card.Link certificate mentioned in the figure is the card's link certificate, if present. As specified in section 9.1.2, this is a link certificate for a new European root key pair created by the ERCA and signed by the previous European private key.U.K.
—The Card.Link.EUR certificate is the European root certificate that is indicated in the CAR of the Card.Link certificate.U.K.
Textual Amendments
CSM_158As depicted in Figure 4, verification of the card's certificate chain shall begin upon card insertion. The vehicle unit shall read the card holder reference (
) from EF ICC. The VU shall check if it knows the card, i.e., if it has successfully verified the card's certificate chain in the past and stored it for future reference. If it does, and the card certificate is still valid, the process continues with the verification of the VU certificate chain. Otherwise, the VU shall successively read from the card the MSCA_Card certificate to be used for verifying the card certificate, the Card.CA. EUR certificate to be used for verifying the MSCA_Card certificate, and possibly the link certificate, until it finds a certificate it knows or it can verify. If such a certificate is found, the VU shall use that certificate to verify the underlying card certificates it has read from the card. If successful, the process continues with the verification of the VU certificate chain. If not successful, the VU shall ignore the card.U.K.
Note: There are three ways in which the VU may know the Card.CA.EUR certificate:U.K.
the Card.CA.EUR certificate is the same certificate as the VU's own EUR certificate;
the Card.CA.EUR certificate precedes the VU's own EUR certificate and the VU contained this certificate already at issuance (see CSM_81);
the Card.CA.EUR certificate succeeds the VU's own EUR certificate and the VU received a link certificate in the past from another tachograph card, verified it and stored it for future reference.
CSM_159As indicated in Figure 4, once the VU has verified the authenticity and validity of a previously unknown certificate, it may store this certificate for future reference, such that it does not need to verify that certificate's authenticity again if it is presented to the VU again. Instead of storing the entire certificate, a VU may choose to store only the contents of the Certificate Body, as specified in section 9.3.2. [F2Whereas storing of all other types of certificate is optional, it is mandatory for a VU to store a new link certificate presented by a card.] U.K.Textual Amendments
Textual Amendments
CSM_160The VU shall verify the temporal validity of any certificate read from the card or stored in its memory, and shall reject expired certificates. For verifying the temporal validity of a certificate presented by the card a VU shall use its internal clock.U.K.
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