(I) /authentication/ "identifier credential": A data object
that is a portable representation of the association between an
identifier and a unit of authentication information, and that can
be presented for use in verifying an identity claimed by an entity
that attempts to access a system. Example: X.509 public-key
certificate. (See: anonymous credential.)
2. (I) /access control/ "authorization credential": A data object
that is a portable representation of the association between an
identifier and one or more access authorizations, and that can be