Thwarting timing attacks using ATM networks. Discussion

In this paper, we describe a method of using Asynchronous Transfer Mode (ATM) network technology to defeat attacks that rely on the opponent's ability disrupt the timely delivery of messages within a cryptographic protocol. Our method centres on ATM technology's ability to provide guarantees associated with the bandwidth and delay characteristics over a given connection. We manipulate these mechanisms to provide timing guarantees on a cryptographic protocol message, which can be used to monitor for foul play in the message delivery process. We also describe how this can be used to detect a denial of service attack.