ATGP - radBIOS - Wireless Networking with Audio

Explore wireless networking using audio in this 53-minute conference talk from BSidesLV 2015. Dive into the concept of Above the Ground Plane (#radBIOS) as Richo Healey demonstrates innovative techniques for data transmission through sound. Learn about PSK31 encoding, Fourier transforms, and the challenges of audio-based networking. Discover the intricacies of data structures, graphs, and architecture involved in this unique approach. Follow along as Healey discusses unambiguous encapsulation, airgap hopping, and content-addressable DAGs. Gain insights into the failures and successes of implementing duplex communication and handshaking protocols. Conclude with a comprehensive overview of digital signal processing (DSP) and keying techniques, along with valuable resources for further exploration in this fascinating field of wireless communication.

Intro
This guy
Recap
Demo Time!
groundstation
Data Structures
Graphs
Architecture
Why didn't you just..
Encoding • Quietnet uses PSK31
PSK 31
How even to audio?
Fourier Transforms
Walking our points
Tones - Bits
Unambiguous Encapsulation
First steps
Actual Airgap Hopping
FAIL: Duplex
Handshaking: 2
Content Addressable Dags
Dumber is better
DSP redux
Keying
Conclusions
Resources