ANNEX I CU.K.Requirements for construction, testing, installation, and inspection
Appendix 11
COMMON SECURITY MECHANISMS U.K.
PART BU.K. SECOND-GENERATION TACHOGRAPH SYSTEM
10.VU- CARD MUTUAL AUTHENTICATION AND SECURE MESSAGINGU.K.
10.5. Secure Messaging U.K.
10.5.1 General U.K.
CSM_187For message authentication, KMAC shall be used with AES in CMAC mode as specified in [SP 800-38B]. The length of the MAC shall be linked to the length of the AES session keys, as specified in CSM_50. The Send Sequence Counter shall be included in the MAC by prepending it before the datagram to be authenticated.U.K.