Steganography in Commonly Used HF Radio Protocols

Presented at DEF CON 22 (2014), Aug. 8, 2014, 11 a.m. (60 minutes).

Imagine having the capability to covertly send messages to an individual or a larger audience, without the need for large centralized infrastructure where your message could be observed, intercepted, or tampered with by oppressive governments or other third parties. We will discuss the opportunities and challenges with steganography implementations in widely used amateur radio digital modes, and present a proof of concept implementation of hiding messages within innocuous transmissions using the JT65 protocol. This technique could theoretically be used to implement a low cost, low infrastructure, covert, world wide short message broadcasting or point to point protocol. No messages in codes or ciphers intended to obscure the meaning thereof were actually transmitted over the amateur bands during the creation of this talk.

Presenters:

• Brent Dukes
  Brent Dukes has a decade of experience working in software and systems engineering roles. He spends his nights tied to various hardware hacking projects sitting in pieces all over his lab, and participating in CTFs. His idea of fun is reverse engineering and modifying toys and consumer electronics for the purposes of good. Brent has been a licensed amateur radio operator since 2006. Twitter: @TheDukeZip
• Paul Drapeau - Principal Security Researcher, Confer Technologies Inc.
  Paul Drapeau is currently the Principal Security Researcher for Confer Technologies Inc. He has held senior level IT security roles and consulted on information security topics for various organizations for over 15 years. Paul has a bachelor's degree in computer science from the University of Rhode Island and has been licensed as an amateur radio operator since 1986. Twitter: @pdogg77

Links:

• https://defcon.org/html/defcon-22/dc-22-speakers.html#Drapeau
• https://infocon.org/cons/DEF CON/DEF CON 22/DEF CON 22 slides/DEF CON 22 - Hacking Conference Presentation Paul Drapeau & Brent Dukes - Steganography in Commonly Used HF Radio Protocols - Slides.mp4
• https://infocon.org/cons/DEF CON/DEF CON 22/DEF CON 22 slides/DEF CON 22 - Hacking Conference Presentation Paul Drapeau & Brent Dukes - Steganography in Commonly Used HF Radio Protocols - Video.mp4
• https://infocon.org/cons/DEF CON/DEF CON 22/DEF CON 22 video and slides/DEF CON 22 - Paul Drapeau & Brent Dukes - Steganography in Commonly Used HF Radio Protocols - Video and Slides.mp4 (Video and Slides)
• https://infocon.org/cons/DEF CON/DEF CON 22/DEF CON 22 slides/DEF CON 22 - Hacking Conference Presentation Paul Drapeau & Brent Dukes - Steganography in Commonly Used HF Radio Protocols - Slides.srt (subtitles)
• https://www.youtube.com/watch?v=X72vwxQ8B84

Similar Presentations:

• The Next HOPE (2010) / Why You Should Be an Amateur
• Notacon 1 (2004) / Amateur Radio: An introduction and assorted topics.
• ToorCamp 2022 / Amateur Radio Certification