Hardening BLE 5.4 Wireless Links Against Eavesdropping and Injection

Eliminating Bluetooth pairing vulnerabilities in medical wearables using hardware-enforced LE Secure Connections.

Mitigating Bluetooth Peripheral Vulnerabilities

Many consumer wearables rely on standard commercial BLE system-on-chips (SoCs) with known vulnerabilities like BLESA or SweynTooth. WearableHSM acts as an isolated cryptographic coprocessor: telemetry data is encrypted before reaching the BLE radio, ensuring that even if the BLE stack is exploited, health records remain confidential.

Hardware-Generated Resolving Private Addresses (RPA)

To prevent stalkers from tracking patients via Bluetooth MAC addresses, WearableHSM rotates resolvable private addresses every 15 minutes, allowing only authorized paired smartphones to identify and connect to the device.

LE Secure Connections: Hardware P-256 ECDH key exchange eliminating legacy PIN-cracking vulnerabilities.
Direct Broadcast Telemetry: Signing BLE Periodic Advertising with Responses (PAwR) packets for multi-sensor networks.
Anti-Tracking Random Addresses: Generating resolving private addresses (RPA) directly in hardware to protect user location.
Zero Plaintext Transit: Encrypting application payloads before handing data over to commercial off-the-shelf BLE chips.

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