Linkage Authority --> Registration Authority:
cert linkage input

Definition
Included In
Communication Solutions
Characteristics
Security

Definitions

cert linkage input (Information Flow): Response to request for authorization certificate linkage data or linkage seed, including encrypted pre-linkage values and their contextual assignments with regard to certificates and end entities, and data describing the linkage value content sufficient to revoke certificate(s) protected by linkage values.

Linkage Authority (Source Physical Object): A linkage authority (LA) is a component of a CCMS that provides inputs to the linkage value calculation process to enable efficient revocation of pseudonym certificates; using two linkage authorities preserves the privacy of an end entity against the authorization certificate authority.

Registration Authority (Destination Physical Object): The 'Registration Authority' (RA) is a component of the CCMS that is the main point of contact for an end entity, and is responsible for provisioning the end entity with authorization and successor enrollment

Included In

This Triple is in the following Service Packages:

None

This triple is associated with the following Functional Objects:

None

This Triple is described by the following Functional View Data Flows:

None

This Triple has the following triple relationships:

None

Communication Solutions

(None-Data) - Guaranteed Secure Internet (ITS) (32)

Solutions are sorted in ascending Gap Severity order. The Gap Severity is the parenthetical number at the end of the solution.

Selected Solution

(None-Data) - Guaranteed Secure Internet (ITS)

Solution Description

This solution is used within Australia, the E.U. and the U.S.. It combines standards associated with (None-Data) with those for I-I: Guaranteed Secure Internet (ITS). The (None-Data) standards include an unspecified set of standards at the upper layers. The I-I: Guaranteed Secure Internet (ITS) standards include lower-layer standards that support secure communications with guaranteed delivery between ITS equipment using X.509 or IEEE 1609.2 security certificates.

ITS Application Entity Development needed			Click gap icons for more info.
Mgmt Bundle: SNMPv3 MIB	Facilities Development needed	Security Secure Session Alternatives
	TransNet IP Alternatives IETF RFC 9293
	Access Internet Subnet Alternatives

Note that some layers might have alternatives, in which case all of the gap icons associated with every alternative may be shown on the diagram, but the solution severity calculations (and resulting ordering of solutions) includes only the issues associated with the default (i.e., best, least severe) alternative.

Characteristics

Characteristic	Value
Time Context	Recent
Spatial Context	Regional
Acknowledgement	True
Cardinality	Unicast
Initiator	Source
Authenticable	True
Encrypt	True

Interoperability	Description
Regional	Interoperability throughout the geopolitical region is highly desirable, but if implemented differently in different transportation management jurisdictions, significant benefits will still accrue in each jurisdiction. Regardless, this Information Flow Triple should be implemented consistently within a transportation jurisdiction (i.e., the scope of a regional architecture).

Security

Information Flow Security
	Confidentiality	Integrity	Availability
Rating	High	High	High
Basis

Security Characteristics	Value
Authenticable	True
Encrypt	True

Linkage Authority --> Registration Authority:cert linkage input