Analyze the Dragonfly handshake protocol used in WPA3 and EAP-pwd Wi-Fi security standards. Explore vulnerabilities in the hash-to-curve algorithm, potential attacks on clients and access points, and information leakage risks. Examine the impact on password brute-force costs, denial-of-service possibilities, and downgrade attack scenarios. Evaluate the Wi-Fi Alliance's response to these security concerns and discuss remaining issues in Wi-Fi security implementation. Gain insights into the fundamental challenges of securing wireless networks and the ongoing efforts to address vulnerabilities in widely-used protocols.
Dragonblood - Analyzing the Dragonfly Handshake of WPA3 and EAP-pwd
Overview
Syllabus
Intro
Background: Wi-Fi Security
Background: Dragonfly in WPA3 and EAP-pwd
Hash-to-curve: EAP-pwd
Attacking Clients
Attacking Access Points
What information is leaked?
Leaked information: #iterations needed
Raspberry Pi 1 B+: differences are measurable
Hash-to-curve: WPA3
Cache attack on NIST curves
Password Brute-force Cost
Denial-of-Service Attack
Downgrade Attacks
Reaction of the Wi-Fi Alliance
Fundamental issue still unsolved
Remaining issues
Conclusion
Taught by
IEEE Symposium on Security and Privacy
