PIV-I / CAC Authentication for NIST 800-171 Shared Workstations

DoD, federal agencies, state and local governments, and defense contractors often rely on shared workstations, secure terminals, and operational systems that must remain continuously available. However, NIST SP 800-171 requires strict enforcement of user identification, authentication, auditability, and accountability—creating a challenge in environments where multiple users access the same machine.

This white paper explains how PIV-I and CAC card authentication with PIN verification enables organizations to meet these requirements without disrupting mission-critical workflows.

This white paper outlines:

  • How to meet NIST 800-171 Identification and Authentication (IA 3.5.x) requirements using PIV-I and CAC cards
  • How to enforce strong, phishing-resistant authentication with smart card + PIN on shared machines
  • How to achieve Audit and Accountability (AU 3.3.x) with named-user traceability
  • How Credenti validates certificates using CRL and OCSP and enforces expiration checks
  • How to support CMMC Level 2 readiness with auditable access controls
  • A real-world example of PIV-I/CAC authentication and machine unlock workflow

It addresses the core challenge for defense and regulated organizations: maintaining fast, uninterrupted access to shared systems while ensuring every action is tied to a verified individual for compliance, audit readiness, and incident response.

Download the white paper to learn how to implement smart card–based, auditable access for shared workstations while aligning with NIST 800-171 and CMMC requirements—without changing existing workflows.

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Make Shared Machines NIST-Ready with PIV-I / CAC

Credenti helps defense, military, federal, and highly regulated organizations add PIV-I/CAC authentication, PIN verification, individual identity, and full auditability to shared workstations without disrupting mission-critical operations.