Black & White Path

May 6, 2026 · Information Security

Remote Recovery of Bluetooth Chip AES‑128 Keys via RF Side‑Channel at Meter‑Scale Distance

Researchers from KTH demonstrated that a simple antenna placed about 1 meter from a Bluetooth device can capture RF emissions containing key‑related leakage, and using machine‑learning‑assisted analysis of roughly 90,000 traces they recover the full AES‑128 key, exposing a practical, non‑contact side‑channel threat and prompting hardware, firmware, and system‑level defenses.