Dynamic Credential Binding
LOW MODERATE HIGHRequirements NIST SOURCE
Bind identities and authenticators dynamically using the following rules: [binding rules].
Discussion (NIST Supplemental Guidance)
Authentication requires some form of binding between an identity and the authenticator that is used to confirm the identity. In conventional approaches, binding is established by pre-provisioning both the identity and the authenticator to the system. For example, the binding between a username (i.e., identity) and a password (i.e., authenticator) is accomplished by provisioning the identity and authenticator as a pair in the system. New authentication techniques allow the binding between the identity and the authenticator to be implemented external to a system. For example, with smartcard credentials, the identity and authenticator are bound together on the smartcard. Using these credentials, systems can authenticate identities that have not been pre-provisioned, dynamically provisioning the identity after authentication. In these situations, organizations can anticipate the dynamic provisioning of identities. Pre-established trust relationships and mechanisms with appropriate authorities to validate identities and related credentials are essential.
Implementation Guidance
Original engineering commentary written for this explorer — not NIST source text and not authoritative guidance.
No engineering interpretation has been authored for IA-5(10) yet. This section is architected to receive it — see the Requirements and Assessment sections above for the authoritative NIST source content in the meantime.
Assessment
Assessment Objectives
- rules for dynamically binding identities and authenticators are defined;
- identities and authenticators are dynamically bound using <IA-05(10)_ODP binding rules>.
Examine
[SELECT FROM: Identification and authentication policy; procedures addressing identifier management; system security plan; system design documentation; automated mechanisms providing dynamic binding of identifiers and authenticators; system configuration settings and associated documentation; system audit records; other relevant documents or records].
Interview
[SELECT FROM: Organizational personnel with identifier management responsibilities; organizational personnel with information security responsibilities; system/network administrators].
Test
[SELECT FROM: Automated mechanisms implementing identifier management capability; automated mechanisms implementing dynamic binding of identities and authenticators].
Overlays
STIGs & CCIs
No STIG checks or CCI mappings are currently loaded for IA-5(10). This section is architected to display, per product: STIG ID, Finding ID, Severity, Title, Description, Check, Fix, CCI, and NIST control mapping — but nothing is populated here until a real DISA STIG/CCI dataset is ingested.
Learn more about STIG/CCI integration →Evidence
Categorized from the SP 800-53A "Examine"/"Test" artifact list above by keyword — not an authoritative NIST evidence list.
Policy
- Identification and authentication policy
- system security plan
Configuration
- system design documentation
- system configuration settings and associated documentation
Testing
- Automated mechanisms implementing identifier management capability
- automated mechanisms implementing dynamic binding of identities and authenticators
Other Records
- procedures addressing identifier management
- automated mechanisms providing dynamic binding of identifiers and authenticators
- system audit records
- other relevant documents or records