As a general design criterion, a symmetric key cipher should not be closed under functional composition due to the implications on the security of the cipher. However, there are s...
So far, efficient algorithmic countermeasures to secure the AES algorithm against (first-order) differential side-channel attacks have been very expensive to implement. In this a...
Elisabeth Oswald, Stefan Mangard, Norbert Pramstal...
Abstract. We define and discuss symmetric subgroup membership problems and their properties, including a relation to the Decision DiffieHellman problem. We modify the Cramer-Shoup...
Abstract. We implement and demonstrate a passive attack on the Bluetooth authentication protocol used to connect two devices to each other. Using a protocol analyzer and a brute-fo...
We prove a tight lower bound for generic protocols for secure multicast key distribution where the messages sent by the group manager for rekeying the group are obtained by arbitra...