Global Sales Contact List

Contact   A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

RSA Laboratories

Drifting Keys: Impersonation Detection for Constrained Devices

Citation: K. Bowers and A. Juels and R. Rivest and E. Shen. Drifting Keys: Impersonation Detection for Constrained Devices. INFOCOM, 2013. To appear.

Abstract: We introduce Drifting Keys (DKs), a simple new approach to detecting device impersonation. DKs enable detection of complete compromise by an attacker of the device and its secret state, e.g., cryptographic keys. A DK evolves within a device randomly over time. Thus a clone device created by the attacker will emit DKs that randomly diverge from those in the original, valid device over time, alerting a trusted verifier to the attack.

DKs may be transmitted unidirectionally from a device, eliminating interaction between the device and verifier. Device emissions of DK values can be quite compact—even just a single bit—and DK evolution and emission require minimal computation. Thus DKs are well suited for highly constrained devices, such as sensors and hardware authentication tokens.

We offer a formal adversarial model for DKs, and present a simple scheme that we prove essentially optimal (undominated) for a natural class of attack timelines. We explore application of this scheme to one-time passcode authentication tokens. Using the logs of a large enterprise, we experimentally study the effectiveness of DKs in detecting the cloning of such tokens.

Click here for paper

Full Publication List

Connect with EMCConnect with EMC
Need help immediately? EMC Sales Specialists are standing by to answer your questions real time.
Use Live Chat for fast, direct access to EMC Customer Service Professionals to resolve your support questions.
Explore and compare EMC products in the EMC Store, and get a price quote from EMC or an EMC partner.
Explore our world-class business partners and connect with a partner today.
We're here to help. Send us your sales inquiry and an EMC Sales Specialist will get back to you within one business day.
Want to talk? Call us to speak with an EMC Sales Specialist live.