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Business Actors Framework
The following business actor Roles can be used to describe Business Actors in a Scenario. This is not a complete list of Business Actors, but these business actor roles will help you describe Business Actors.
| Business Actor | Description |
| Sending Entity | The entity that is the subject of the Certificate associated with the Direct address that is initiating the Direct message. (The From address.) |
| Receiving Entity | The entity that is the subject of the Certificate associated with the Direct address that is receiving the Direct message. (The To address.) |
| Sending Organization | An organization that utilizes Direct messaging to send information to another Entity operating on the DirectTrust Network. |
| Receiving Organization | An organization that utilizes Direct messaging to receive information from another Entity operating on the DirectTrust Network. |
| Sending End User | Personnel or devices employed by an organization who utilize Direct messaging to send information to another Entity operating on the DirectTrust Network. |
| Receiving End User | Personnel or devices employed by an organization who utilize Direct messaging to receive information from another Entity operating on the DirectTrust Network. |
| Intermediary | An organization that provides extended health information services for Direct Secure Messaging. |
| Health Information Service Provider (HISP) | An organization authorized to operate as a Health Information Services Provider under a policy authority like DirectTrust. |
| Certificate Authority | An authority trusted by one or more users to create and assign certificates. Frequently abbreviated as CA. |
| Registration Authority | The entity responsible for identification and authentication of certificate Subjects frequently abbreviated as RA. RA’s may also perform identity proofing for non-PKI credentials issued by Identity Providers. RA’s have the capability to identity proof organizations, practitioners, and Individuals. |
| Identity Provider (IdP) | An Identity Provider issues non-PKI credentials and manages authenticators and the credential life-cycle for duly identity proofed subjects. The IdP can authenticate previously identity proofed individual with one or more authenticators. The IdP offers authorization services which can be used in a tiered OAuth scenario to simplify user authentication. |
| Credential Service Provider (CSP) | NIST calls organizations that perform both the RA and IdP function Credential Service Providers. |