Editor’s Note: The NIST Interagency Report NISTIR 7817, A Credential Reliability and Revocation Model for Federated Identities by Hildegard Ferraiolo is attached here. The Introduction is below.
Identity providers establish and manage their user community’s digital identities. These identities (in the form of digital credentials) are employed by users to authenticate to service providers. The digital identity technology deployed by an identity provider for the population of its users varies and often dictates a specific authentication solution in order for the service provider to authenticate the user.