FIDO2 & WebAuthn Level 3+ Hardware Enclave Architecture
Engineering high-assurance authenticator hardware enforcing client-to-authenticator protocol (CTAP 2.1) validation, hardware-backed user presence detection, and origin binding.
CTAP 2.1 Protocol Isolation
AuthHSM isolates the Client to Authenticator Protocol (CTAP 2.1) engine in a dedicated cryptographic microkernel, ensuring incoming CBOR commands undergo strict bounds checking and memory sandboxing before invoking cryptographic signing primitives.
Phishing Immunity Through RP ID Cryptographic Derivation
By binding cryptographic signature generation directly to SHA-256 hashes of the Relying Party identifier (RP ID) verified via TLS channel binding, AuthHSM eliminates credential theft via adversary proxy servers or spoofed DNS domains.
- Origin-Bound Keys: Cryptographically preventing man-in-the-middle phishing attacks by strictly deriving keypairs from relying party IDs.
- Hardware Match-on-Chip: Enforcing biometric template comparisons in isolated enclave SRAM without revealing raw biometric data.
- Attestation Certificates: Embedding device-unique X.509 attestation keys (DAK) signed by certified hardware roots for compliance verification.
- Resistant to Replay: Nonce-based cryptographic challenge signing preventing credential replay across distributed enterprise sessions.
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