IEEE Transactions on Dependable and Secure Computing

IEEE Transactions on Dependable and Secure Computing (TDSC) is a bimonthly journal that publishes archival research results focusing on foundations, methodologies, and mechanisms that support the achievement—through design, modeling, and evaluation—of systems and networks that are dependable and secure to the desired degree without compromising performance. Read the full scope of TDSC

IEEE Transactions on Dependable and Secure Computing (TDSC) has moved to the OnlinePlus publication model.

From the November/December 2015 issue

Increasing Network Resiliency by Optimally Assigning Diverse Variants to Routing Nodes

By Andrew Newell, Daniel Obenshain, Thomas Tantillo, Cristina Nita-Rotaru, and Yair Amir

Featured article thumbnail imageNetworks with homogeneous routing nodes are constantly at risk as any vulnerability found against a node could be used to compromise all nodes. Introducing diversity among nodes can be used to address this problem. With few variants, the choice of assignment of variants to nodes is critical to the overall network resiliency. We present the Diversity Assignment Problem (DAP), the assignment of variants to nodes in a network, and we show how to compute the optimal solution in medium-size networks. We also present a greedy approximation to DAP that scales well to large networks. Our solution shows that a high level of overall network resiliency can be obtained even from variants that are weak on their own. We provide a variation of our problem that matches the specific communication requirements of applications run over the network (e.g., Paxos and BFT). Also, we analyze the loss in resiliency when optimally assigning variants based on inaccurate information about compromises.

download PDF View the PDF of this article      csdl View this issue in the digital library

Editorials and Announcements


Call for Papers


Guest Editorials

Reviewers List

Annual Index

Access recently published TDSC articles

RSS Subscribe to the RSS feed of latest TDSC content added to the digital library.

Mail Sign up for the Transactions Connection newsletter.

Swimming with Sharks: Security Roundtable