Presented at
Black Hat Asia 2017,
March 31, 2017, 3:30 p.m.
(30 minutes)
In this talk, we present new applications for cryptographic secret handshakes between mobile devices on top of Bluetooth Low-Energy (LE). Secret handshakes enable mutual authentication between parties that did not meet before (and therefore don't trust each other) but are both associated with a virtual secret group or community. This property provides strong privacy guarantees that enable interesting applications. One of them is proximity-based discovery for members of private communities. Others are private event organization and head-counting, and smart BLE car-locks.<br><br> We will introduce MASHaBLE, a mobile application that enables performing secret handshakes over Bluetooth LE communication. We use direct peer-to-peer communication, rather than relying on a central server which results in interesting applications. We will also discuss the specifics of implementing secret handshakes over Bluetooth LE and present our prototype implementation.
Presenters:
-
Yan Michalevsky
- Security Researcher, Stanford University
Yan Michalevsky is a PhD candidate at Stanford University. He is working on research in applied security and crypto, combining expertise in signal processing and machine learning to come up with new attacks. He has formerly spoken at Black Hat and other security conferences about exploitation of smartphone sensors such as gyroscopes to eavesdrop on users. His goal is to apply cryptographic schemes to building applications that would help preserving users' privacy.
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