Security, privacy, and cryptography
Video
Online Auctions, Strategyproofness and Random Valuations
We discuss the limited-supply online auction problem, in which an auctioneer has k goods to sell and bidders arrive and depart dynamically, from a theoretical point of view and show how Economics, Scheduling theory, Probability…
Video
JET: Join-Exit Tree for Time Efficient Contributory Group Key Management
In secure group communications, the time cost associated with key updates for member join and departure is an important aspect of quality of service, especially in large groups with highly dynamic membership. To achieve better…
Video
Complex Arithmetic for Hardware Implementation: Division and Square Root
We adapt the radix-r digit-recurrence division algorithm to complex division and square root. By prescaling the operands, we make the selection of result digits practical. This leads to a simple hardware implementation, comparable in delay…
Publication
On the Economics of Anti-Counterfeiting
Publication
On the (In)security of the Fiat-Shamir Paradigm
Publication