Control Description
The Replay-Resistant Authentication control (03.05.04) within the Identification and Authentication family establishes requirements for Canadian defence suppliers handling controlled information under ITSP.10.171 / CPCSC.
Assessment Objective
Assessors verify that the organization has implemented and documented replay-resistant authentication practices consistent with ITSP.10.171 requirements, and that evidence demonstrates ongoing control effectiveness.
CPCSC Context
This control is part of the full 97-control ITSP.10.171 baseline required for CPCSC Level 2 third-party certification, expected to be mandatory from April 2027. Organizations should begin preparing now to ensure readiness.
How Solymus Helps
Solymus maps your evidence directly to ITSP 03.05.04, providing tamper-evident, KMS-signed receipts for every artifact you upload. The platform generates audit-ready evidence packages with per-artifact verification URLs that assessors can independently validate.
Begin with free Level 1 to establish your evidence chain, then upgrade to Level 2 when you need full 97-control coverage and third-party assessment readiness.
Frequently Asked Questions
What is ITSP 03.05.04 (Replay-Resistant Authentication)?
ITSP 03.05.04 is a security control in the Identification and Authentication family of ITSP.10.171, Canada's adaptation of NIST SP 800-171 Rev 3. It requires organizations to the Replay-Resistant Authentication control (03.05.04) within the Identification and Authentication family establishes requirements for Canadian defence suppliers handling controlled information under ITSP.10.171 / CPCSC.
Is ITSP 03.05.04 required for CPCSC Level 1?
No. ITSP 03.05.04 is required at CPCSC Level 2 (third-party certification, April 2027) but is not in the Level 1 subset of 13 controls.
How does Solymus help with this control?
Solymus provides a structured readiness assessment for ITSP 03.05.04, tamper-evident evidence collection with KMS-signed receipts, and exportable evidence packages that map directly to this control for audit submission.
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