d Abstract) XiaoFeng Wang∗ Michael K. Reiter† We present congestion puzzles (CP), a new countermeasure to bandwidth-exhaustion attacks. Like other defenses based on client puz...
A key element of any mobile code based distributed system are the security mechanisms available to protect (a) the host against potentially hostile actions of a code fragment under...
A significant number of mobile payment systems have been proposed in recent years, most of them based on a scenario where all the entities are directly connected one to another (fo...
Massively deploying RFID systems while preserving people's privacy and data integrity is a major security challenge of the coming years. Up to now, it was commonly believed th...
We extend the definitional work of Dwork, Naor and Sahai from deniable authentication to deniable key-exchange protocols. We then use these definitions to prove the deniability fe...