Yes. Separate operating models for smart cards, security keys, and passwordless login create inconsistent proofing, recovery, and offboarding. A single governance model makes it easier to apply the same assurance standard across access methods and to prove to auditors that lifecycle controls are consistent.
Why One Governance Model Usually Beats Split Passwordless and PKI Policies
Centralisation works because the assurance problem is the same even when the login form is not. If one team governs passkeys, smart cards, and certificate-backed authentication, it can set a single standard for enrolment, recovery, revocation, and exception handling, instead of letting each channel drift into its own local practice.
That matters most where the organisation wants one decision about who can authenticate, how strong that proof must be, and what happens when a device, key, or certificate is replaced, lost, or suspected compromised. The benefit is not just simplicity, it is consistency in the controls that auditors and incident responders actually examine.
What Centralisation Changes in Practice
A shared model lets the organisation align passwordless sign-in and PKI under common governance rules, even if the underlying authenticators differ. That usually means one ownership model, one recovery standard, one offboarding process, and one set of assurance levels for how identities are proofed before they receive access.
The practical payoff is that a user does not experience a different risk posture simply because they authenticate with a security key in one app and a certificate in another. It also reduces the chance that one route becomes the “easy path” for help desk resets or emergency access, which is where control gaps often start.
For organisations building out passkeys, the strongest operating model is usually one that treats passwordless as part of the broader identity lifecycle, not as a separate convenience layer. Passwordless and Passkeys Guide is useful here because it ties phishing-resistant sign-in to enrolment, recovery, and rollout decisions rather than just user experience.
Why Passwordless and PKI Belong in the Same Assurance Conversation
Passwordless login and PKI are not identical, but they overlap in the controls that matter most. Both depend on proofing, issuer trust, key or credential protection, lifecycle management, recovery, and revocation when something is lost or no longer trusted. If those controls are split, the organisation can end up with different standards for equally sensitive authentication paths.
A unified approach is especially valuable when certificates are part of the broader identity fabric. The same governance model can cover issuance, renewal, expiry handling, and key protection for certificates while also covering how passkeys are enrolled, recovered, and retired. Machine Identity, PKI and Certificate Lifecycle Guide is relevant because it shows how certificate lifecycle control depends on disciplined issuance and renewal practices.
That governance overlap is why centralisation is not just an admin preference. It prevents one class of authenticators from becoming more weakly governed than another, and it gives security teams one place to define what “strong enough” means for each assurance level and user population.
How to Judge Whether the Model Is Good Enough
The test is whether the organisation can prove consistent control across the full lifecycle, not whether the login technologies are the same. If proofing criteria, recovery checks, revocation timelines, and offboarding triggers differ materially by method, then the model is still fragmented even if the policy documents look unified.
That is why a central programme should own the operating model, while platform teams handle implementation. The governance layer should define the standard; individual systems should inherit it. Identity Security Programme Guide is useful for structuring that ownership model, and Workforce Identity Security Guide helps connect the policy to enrolment, recovery, and offboarding decisions for human users.
For PKI-heavy environments, governance also needs to keep pace with external issuance and renewal expectations. CA/Browser Forum is relevant because public certificate ecosystems impose baseline expectations on issuance and revocation discipline, which is exactly the kind of standard a central model should absorb rather than ignore.
Risk and Threat Considerations
Split governance creates uneven assurance, and uneven assurance creates attack paths. If one authentication method has weaker recovery or slower revocation than another, attackers will target the weakest route, especially where help desk processes or certificate renewal workflows can be abused to regain access.
Failure mechanism: Separate operating models allow inconsistent proofing, recovery, offboarding, and revocation, so one channel can be exploited or misused even when another is well controlled.
Impact: The organisation can lose account integrity, miss timely revocation, and struggle to prove that access removal and authentication assurance were handled consistently across methods.
That risk is not theoretical. Phishing-resistant sign-in only works when recovery and exception handling are equally disciplined, and certificate-based authentication only stays trustworthy when key and certificate lifecycle controls are enforced end to end. NIST SP 800-63 Digital Identity Guidelines and NIST SP 800-57 Key Management both reinforce that authentication strength depends on lifecycle discipline, not just on the authenticator type.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST SP 800-63, NIST SP 800-57 and NIST SP 800-53 Rev 5 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-63 | N/A — Digital Identity Guidelines | Covers authenticator assurance, phishing-resistant authentication, and recovery discipline for strong login methods. |
| Recommendation — Align passkeys and certificates to the same assurance and recovery requirements. | ||
| NIST SP 800-57 | N/A — Key Management Recommendations | Key lifecycle controls are central when PKI and certificate-based authentication are in scope. |
| Recommendation — Apply key lifecycle controls consistently across issuance, rotation, and revocation. | ||
| NIST SP 800-53 Rev 5 | IA-5 — Authenticator Management | Covers lifecycle governance for authenticators, including issuance, change, and revocation. |
| IA-2 — Identification and Authentication (Organizational Users) | Applies because the question is about governing workforce authentication methods under one model. | |
| IA-9 — Identification and Authentication (Non-Organizational Users) | Relevant where central governance extends to external or non-human authentication paths. | |
| Recommendation — Standardise authenticator lifecycle controls across all authentication methods. Define one authentication standard for organizational users across channels. Extend the same governance model to external and non-human authenticators where used. | ||
Practitioner Guidance
What to prioritise: Build one governance model first, then map passkeys, smart cards, and certificates into the same enrolment, recovery, revocation, and offboarding rules. If a control cannot be expressed consistently across all three, treat it as a governance gap, not a technology variation.
What to verify: Check that you can produce the same evidence for every method, including proofing records, recovery approvals, device or key replacement, and access removal timing. If auditors would see different standards by channel, the model is still fragmented.
Common mistake: Letting each authentication method have its own exception process. That usually creates the most dangerous variance, because recovery and break-glass paths are where assurance breaks down first.
Practitioner takeaway: Centralise the assurance model, not just the tooling, so every strong-authentication path is governed by the same lifecycle decisions and the same evidence standard.
Related resources from NHI Mgmt Group
- Should organisations prioritise external exposure or internal credential governance first?
- How does the consumer-secret-entitlement model help with governance at scale?
- Should organisations treat NHI secrets and human credentials under the same governance model?
- What happens when organisations centralise certificate issuance under a cloud PKI account?