Peripheral-Free Device Pairing by Randomly Switching Power

With the growing popularity of Internet-of-Things (IoT), a massive amount purpose-specific, heterogeneous, inexpensive devices have been deployed. To allow these to perform their duties and collaborate efficiently, designing secure dependable communication channel is necessary. Pairing, as fundamental procedure for establishing trustworthy channel, has received extensive attention from security researchers. Previous pairing protocols depend on auxiliary peripherals (e.g., displays, speakers) share secret message, while those products featuring with low-price, manufacturers would probably adopt insecure methods reduce cost, so may be subject various attacks. mitigate such situation, we design peripheral-free protocol, termed SwitchPairing. Our protocol only requires users connect pre-pairing same power source, then randomly presses releases switch generate shared secret. It does not require additional can defense eavesdropping replay attacks innately. We implement prototype via two CC2640R2F development boards invite volunteers participate in experiments about bench-marking usability. The result our show that fulfill efficient requirement IoT applications.