Hardware Security Integration Brief
How PasskeyBridge™ Atomic Fingerprints complement Apple Secure Enclave and Google Titan to close the physical-layer attestation gap.
Hardware Security Integration Brief
How PasskeyBridge Atomic Fingerprints complement Apple Secure Enclave and Google Titan.
The Attestation Gap
Hardware security modules prove that a key exists on a device. They do not prove the device is physically present at the moment of assertion.
Apple Secure Enclave
Hardware-backed key storage, biometric gating, Secure Boot chain
Proves the key exists on a device, not that the device is physically present at the moment of assertion
Google Titan M2 / Titan Security Key
FIDO2 attestation, tamper-resistant key generation, firmware integrity
Confirms cryptographic ceremony completion, not real-time physical-layer uniqueness of the endpoint
What Atomic Fingerprints Add
A composite hash of ambient magnetic field readings (magnetometer via the Generic Sensor API), accelerometer motion vectors, and network jitter (RTT variance via Resource Timing API), captured within a ≤100ms window and bound to the attestation certificate. This proves more than the existence of a key: it proves the specific physical device was present at the exact moment of the cryptographic assertion. Identical jitter hashes across distinct captures trigger replay anomaly detection.
Integration Architecture
The Atomic Fingerprint SDK operates as an enrichment layer between the application and the hardware security module. No firmware modifications are required.
Technical Specifications
Integration Points
Four ways the Atomic Fingerprint layer enriches existing hardware security infrastructure.
Attestation Enrichment
Atomic Fingerprint binds to the attestation certificate during FIDO2 registration, adding a physical-layer proof that the key ceremony occurred on a specific, physically-verified device.
Temporal Binding
The ≤100ms capture window ensures the magnetometer and motion-sensor readings are contemporaneous with the cryptographic assertion, closing the replay gap.
Continuous Device Trust
Post-enrollment spatial bindings periodically re-verify the physical device, detecting hardware substitution or relay attacks that pass standard attestation checks.
Zero-Modification Integration
The binding layer operates alongside existing Secure Enclave / Titan APIs. No firmware changes required. The SDK reads publicly accessible sensor interfaces via enterprise entitlements.
Vertical Applications
Representative use cases where physical-layer attestation enrichment is designed to strengthen device binding.
Consumer Device Auth
Bind passkey registration to the physical iPhone or Pixel performing the ceremony, preventing credential migration to attacker-controlled devices.
Enterprise Terminal Binding
Bloomberg and Refinitiv terminals bound to specific hardware. Credential theft alone cannot authorize trades from a different physical terminal.
Military & Defense
ITAR/EAR-compliant device attestation for tactical terminals. Hardware substitution detected within the ≤100ms capture window.
SCADA / Critical Infrastructure
NERC CIP-compliant HMI authentication. Spatial binding ensures operator commands originate from the authorized physical console.
Why This Cannot Be Replicated with Software Alone
Three categories of existing approaches, and why none close the physical-layer gap.
Standard TPM / Secure Enclave Attestation
Proves key residency on a device class, not that a specific physical unit is present at assertion time. A cloned attestation cert from a compromised backup passes verification.
Probabilistic Behavioral Biometrics
Keystroke dynamics and touch patterns require 30–60 seconds of interaction to reach confidence thresholds. Atomic Fingerprints achieve deterministic binding in ≤100ms with zero user interaction.
GPS / Network-Based Location Binding
Easily spoofed via VPN, mock location APIs, or relay proxies. Magnetometer and motion-sensor readings are tied to the device's physical environment and cannot be synthesized remotely.
Intellectual Property
Atomic Fingerprint technology is covered under U.S. Patent Application 19/553,357 and CIP Provisional Filing 63/998,671 (NF-08). Additional provisional filings cover the BLAST transport protocol, agentic trust scoring engine, and A2A trust negotiation.
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We are open to technical partnerships, co-development agreements, and licensed integration with hardware security platforms.