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4.4 Federation and Assertions

NIST PIV and digital identity SP 800-63-4 against SP 800-63-3
All changes in this version
removed 4 Digital Identity Model part of 4

Title changed

Before · SP 800-63-3

Federation and Assertions

After · SP 800-63-4

Federation and Assertions

Control changed

Before · SP 800-63-3

Normative requirements can be found in SP 800-63C , Federation and Assertions .

Overall, SP 800-63 does not presuppose a federated identity architecture; rather, these guidelines are agnostic to the types of models that exist in the marketplace, allowing agencies to deploy a digital authentication scheme according to their own requirements. However, identity federation is preferred over a number of siloed identity systems that each serve a single agency or RP.

Federated architectures have many significant benefits, including, but not limited to:

• Enhanced user experience. For example, an individual can be identity proofed once and reuse the issued credential at multiple RPs.
• Cost reduction to both the user (reduction in authenticators) and the agency (reduction in information technology infrastructure).
• Data minimization as agencies do not need to pay for collection, storage, disposal, and compliance activities related to storing personal information.
• Pseudonymous attribute assertions as agencies can request a minimized set of attributes, to include claims, to fulfill service delivery.
• Mission enablement as agencies can focus on mission, rather than the business of identity management.

The following sections discuss the components of a federated identity architecture should an agency elect this type of model.

After · SP 800-63-4

Normative requirements can be found in SP 800-63C , Federation and Assertions .

Overall, SP 800-63 does not presuppose a federated identity architecture; rather, these guidelines are agnostic to the types of models that exist in the marketplace, allowing agencies to deploy a digital authentication scheme according to their own requirements. However, identity federation is preferred over a number of siloed identity systems that each serve a single agency or RP.

Federated architectures have many significant benefits, including, but not limited to:

• Enhanced user experience. For example, an individual can be identity proofed once and reuse the issued credential at multiple RPs.
• Cost reduction to both the user (reduction in authenticators) and the agency (reduction in information technology infrastructure).
• Data minimization as agencies do not need to pay for collection, storage, disposal, and compliance activities related to storing personal information.
• Pseudonymous attribute assertions as agencies can request a minimized set of attributes, to include claims, to fulfill service delivery.
• Mission enablement as agencies can focus on mission, rather than the business of identity management.

The following sections discuss the components of a federated identity architecture should an agency elect this type of model.