Missing parameters.

Processed OK and all attributes included.

Processed OK but no attributes included.

Processed OK but some attributes included.

Processed with errors.

Processed OK.

Processed with errors.

Processed OK.

ACAAttribute is an instance of an attribute with the time constraints.

ACAAttrReq is sent to request an ACert (attributes certificate) to the Attribute Certificate Authority (ACA).

ACAAttrResp is the response of Attribute Certificate Authority (ACA) to the attribute request.

ACAFetchAttrReq is a request to the Attribute Certificate Authority (ACA) to refresh attributes values from the sources.

ACAFetchAttrReq is the answer of the Attribute Certificate Authority (ACA) to the refresh request.

Status codes shared by both CAs.

Certificate issued by either the ECA or TCA.

Certificate requests.

Empty message.

FetchAttrsResult is returned within the ECertCreateResp indicating the results of the fetch attributes invoked during enroll.

Uniquely identifies a user towards either CA.

Signature.

TCert .

Public/private keys.

User registration.