Update draft-ietf-wimse-arch.md

draft-ietf-wimse-arch.md

@@ -83,7 +83,7 @@ Workload identity often comprises multiple attributes that describe various aspe
 
 The Workload Identifier consists of a concise string allocated within a namespace defined by a Trust Domain. This Workload Identifier is present in Workload Identity Tokens and X.509 certificates issued by the authority for the Trust Domain. The Workload Identifier is used to associate additional identity attributes to the workload through the use of tokens (workload attribute tokens?) or online look up services. It may also be used directly in authorization calculations and audit logs.
 
-The Trust Domain consists of a string that matches the format of a fully qualified domain name. It is the intent that a Trust Domain is actually a domain name registered to the organization defining the Trust Domain, but this may not be true in all cases. The Trust Domain also maps to the issuer of cryptographically signed Workload Identity Tokens (WIT) or X.509 Certificate. The association between a Trust Domain and the cryptographic root of the signing authority for that Trust Domain must be made securely through an out-of-band mechanisms. [TODO: where should mechanisms be defined?]
+The Trust Domain consists of a string that matches the format of a fully qualified domain name. It is the intent that a Trust Domain is actually a domain name registered to the organization defining the Trust Domain, but this may not be true in all cases. The Trust Domain also maps to the issuer of cryptographically signed Workload Identity Tokens (WIT) or X.509 Certificate. The association between a Trust Domain and the cryptographic root of the signing authority for that Trust Domain must be made securely through an out-of-band mechanisms.
 
 The Trust Domain also defines how the rest of the Workload Identifier is constructed. The Workload Identifier may represent a type of workload such that the same identifier may be used by many instances of the same service. A Trust Domain may choose identifiers to represent a specific instance of a workload such that each workload of the same type will have a specific identity.  The Trust Domain could choose a naming scheme that allows for both objects by imposing a hierarchical structure on the naming format.