Individual skill
implementing-hardware-security-key-authentication
Implements FIDO2/WebAuthn hardware security key authentication including registration ceremonies, authentication flows, YubiKey enrollment, and passkey migration strategies. Builds a complete relying party server using the python-fido2 library that supports cross-platform authenticators, resident key (discoverable credential) workflows, and user verification policies. Activates for requests involving FIDO2 implementation, WebAuthn registration, hardware security key enrollment, YubiKey integration, or passkey migration from password-based authentication.
internal/tools/skills/data/identity-access-management/implementing-hardware-security-key-authentication/SKILL.md
Source commit d42f381ad34843e71a42658e5c57290c713e85af
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- Last checked
- Nov 9, 2026
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- 1,327
- Repository last updated
- Nov 9, 2026
- License
- Apache-2.0
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- cybersecurity Repository topic
- security Repository topic
- bug-bounty Repository topic
- automation Repository topic
- autonomous-pentesting Repository topic
- ai-agent Repository topic
- ai-security Repository topic
- ethical-hacking Repository topic
- golang Repository topic
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- fido2 Declared skill tag
- webauthn Declared skill tag
- hardware-security-key Declared skill tag
- yubikey Declared skill tag
- passkeys Declared skill tag
- passwordless-authentication Declared skill tag
- ctap2 Declared skill tag
- security Derived category
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SKILL.mdcore · 19,654 bytes
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# Implementing Hardware Security Key Authentication
## When to Use
- Deploying phishing-resistant multi-factor authentication (MFA) using FIDO2 hardware security keys for high-value accounts (administrators, developers, privileged users)
- Building a WebAuthn relying party server that supports both roaming authenticators (USB/NFC security keys) and platform authenticators (Windows Hello, Touch ID, Android biometrics)
- Migrating an existing password-based authentication system to support passkeys (discoverable credentials) as a primary or secondary authentication factor
- Enrolling YubiKey devices for an organization's workforce, including PIN setup, credential registration, and backup key provisioning
- Implementing passwordless authentication flows that comply with NIST SP 800-63B AAL3 (authenticator assurance level 3) requirements
**Do not use** without HTTPS in production (WebAuthn requires a secure origin), for systems where users cannot physically access a USB/NFC port, or as the sole authentication factor without a recovery mechanism for lost keys.
## Common Misconfigurations & Verification
A registered FIDO2 key proves nothing if these gaps remain — each silently downgrades phishing resistance: