Entity Statement

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Full Title or Meme

A digital document that describes a digital Entity typically signed by a trusted issuer or Authority.

Context

On the Identity Management page different roles are defined for Entities.

Problems

Solutions

Quite a few structures have been defined to describe entities. The Entity Statement created in the OpenID Connect Federation document is taken as be base for comparison with several others in the table below.

Entity Statement HL7 capability X.509 certificate DID Document Notes
n/a persistent URI ver 3, Serial No. @context Document ID - may include status & url to this or current version of doc
n/a s/w app name may include status & a human readable description of function
software very specific software version (GUID?) incl. trade name, release date
iss publisher Issuer controller The entity identifier of the issuer of the statement may incl. contact
scope? use context
grant_types? purpose EKU
jurisdiction who's laws apply?
sub Subject DN id The entity identifier of the subject
authn method
iat date published Not Before The time the statement was issued or start validity
exp Not After Expiration time when the statement MUST NOT be used for new signatures
jwks public key publicKeyPem public part of the subject entity's signing keys
authority_hints imports chain blockchain entities that may issue an entity statement about the issuer entity
metadata protocol specific metadata claims
metadata_policy type followed by organization information
metadata type kind of app overall purpose of this type of installation
policy instantiates uri of detailed description (level confusion)
sub_is_leaf is the subject considered a leaf entity
organization_name implementation Legal entity incl contact, uri. not very exact correspondence (level confusion)
response mode rest How the request & response are put into http incl. security choices
errors messaging needs to be part of good implementation support
documentation seems out-of-place?
federation s/w app PKI self ID context

HL7 FHIR Capability Statement

The FHIR spec include a definition of a Resource Capability Statement. Which is similar in purpose to the Entity Statement but includes FHIR specific fields. To quote the spec "A Capability Statement documents a set of capabilities (behaviors) of a FHIR Server for a particular version of FHIR that may be used as a statement of actual server functionality or a statement of required or desired server implementation.".

References