There are four primary participating entities within SISAC: Auditors, Issuers , Relying Parties, and Subscribers.
Auditors – Auditors or Audit Firms ensure Issuers meet the standards and requirements set forth by SISAC, which are defined in SISAC's
Certificate Policy Requirements Document (CPRD).
Issuers – Issuers, or Accredited Issuing Authorities (AIAs) as they are referred to in SISAC, are responsible for the creation and
life cycle management of secure identity credentials.
Relying Party – An entity (e.g., organization) that processes a secure identity credential for the purpose of providing a security service
(e.g., authentication).
Subscribers - A Subscriber is the holder or user of a secure identity credential, and is the entity defined within the secure identity
credential.