ANNEX I CRequirements for construction, testing, installation, and inspection
Appendix 11
COMMON SECURITY MECHANISMS
PART BSECOND-GENERATION TACHOGRAPH SYSTEM
13.SECURITY FOR REMOTE COMMUNICATION OVER DSRC
13.1.General
CSM_224The DSRC security data shall consist of the concatenation of the following data elements in the following order; see also Figure 12:
- Current date time
the current date and time of the VU (data type )
- Counter
a 3-byte counter, see CSM_225
- F1VU serial number
the VU’s serial number or certificate request ID (data type VuSerialNumber or CertificateRequestID) – see CSM_123
- DSRC master key version number
the 1-byte version number of the DSRC master key from which the VU-specific DSRC keys were derived, see section 9.2.2.
- MAC
the MAC calculated over all previous bytes in the RTM data.