September 2001

From University of Pennsylvania

DARPA awards computer scientists $2.1 million to integrate security features into mainstream computers

PHILADELPHIA – Computer scientists at the University of Pennsylvania have received a two-year, $2,125,000 grant to introduce advanced security features used in special-purpose government computers into standard office PCs.

The funding, from the Defense Advanced Research Projects Agency, represents a change in the federal government’s approach to procuring highly secure computers, said principal investigator Jonathan M. Smith. Endlessly besieged by individuals seeking to break into federal web sites and classified files, government computers require security mechanisms and assurances far more stringent than those ordinarily engineered into the computers available to the general public.

"During the last few decades, the government’s approach has been to contract researchers to develop high-security workstations specifically for its own uses, outside of the mainstream computer industry," said Smith, professor of computer and information science at Penn. "The problem is that development of these special-purpose computers has generally progressed so slowly that the machines, while indeed secure, are technically obsolete by the time they are put into service."

Smith and colleagues at Penn, the software development consortium OpenBSD, and the Apache Software Foundation and OpenSSL Group propose to use the open-source movement – where programmers openly share incremental advances – to try to engineer better security features into mainstream computers, not only those developed just for the military and other high-security organizations. The government then benefits by purchasing more af-fordable, standardized computers with security features.

"Computers developed for consumer use have focused on user-friendliness, not security concerns," Smith said. "Users generally only care about security when they’ve had a failure."

Working through OpenBSD, the computing world’s most secure forum for the development of open-source software, the team hopes to integrate stronger security features into mainstream software as it progresses through development. Individuals worldwide who are interested in software can download and examine open-source code and suggest revisions. This collaborative approach leads to more robust software more quickly, Smith said.

By auditing the security weaknesses of conventional software as it’s developed, Smith’s team will try to foster the development of mainstream systems secure enough to meet the government’s needs. The team will share its security advances with the open-source software community via OpenBSD, whose machines have proven impervious to break-ins for many years. The team will work on an audit of OpenSSL, the widely used software for e-commerce security found in the Apache web server. Apache software is widely used in web applications.

"We expect our work will represent a serious contribution to all computer manufacturers, not just the government," Smith said. "The source code we develop will be freely available to everyone, and no manufacturers want to deliver an insecure system when they know how to do better."

Smith’s colleagues on the DARPA-funded work include Theo de Raadt, project founder and leader of OpenBSD; Michael B. Greenwald, assistant professor of computer and information science at Penn; Ben Laurie, a former mathematician at Cambridge University who is now technical director of A.L. Digital Ltd., a director of the Apache Software Foundation and core team member of the Open SSL Group; and Angelos Keromytis, an assistant professor of computer science at Columbia University.












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