Division 4.1.2.4 Key management

Safety related data transmitted via radio are protected by mechanisms that need cryptographic keys. The infrastructure manager shall provide a management system that controls and manages the keys. A key management interface is required:

• between the key management systems of different infrastructure managers,

• between the key management system and the on-board and track-side ETCS.

The security of key management affects the safety of the control-command subsystem. Therefore a security policy is required for the key management system.

The requirements are specified in Annex A, index 15.