FPGA-based Radio Receiver for securing Wifi against hacking attacks
RAsentinel is an open-source project focused on creating a cost-effective, small, and low-power wide band radio receiver device that employs an FPGA to automatically detect malicious attacks on Wifi access points, such as Man in the Middle and Denial of Service attacks. By monitoring any Wifi cell, the device enhances internet safety for everyday users. The device features low-cost receive-only chips that digitize 40 MHz of the Wifi radio spectrum at 2.4 GHz. An FPGA extracts relevant properties from demodulated and decoded packets in real-time without storage. These properties are then processed by a neural network, also implemented on the FPGA, to determine if the traffic is genuine or an attack.
The hardware is a wide band SDR receiver that receives at least one komplete WiFi Channel with high resolution (12 Bits) to be able to detect smallest anomalies in a transmitted signal. The initial evaluation hardware consists on an 12 Bit ADC (TI ADC3222) which is able to convert a 40MHz part of the 2.4GHZ radio spectrum into a 4 x 240Bit/s LVDS streams into a XLINIX Artix7 FPGA evaluation board.
Link to the FPGA dev. board [https://de.aliexpress.com/item/1005006473783593.html]
The vast majority of the code will be written in Verilog anbd run on the FPGA. There will also be some helper microcontrollers which helps controlling the frontend-hardware and maybe the interconnctivity with other systems (alarm forwarding)
Project Maintainer: Tobias Weber
Last updated: 15.5.2024
