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Designing Systems for Internet Commerce

    G. Winfield Treese
    Lawrence C. Stewart

Lawrence Stewart

Lawrence C. Stewart is Chief Technology Officer of Serissa Research, Inc.

He received an S.B. in Electrical Engineering from MIT in 1976, followed by M.S. and Ph.D. degrees from Stanford University in 1977 and 1981, respectively, both in Electrical Engineering. His Ph.D. thesis work was on data compression of speech waveforms using trellis coding.

Stewart joined the Xerox Palo Alto Research Center in 1977, where he designed the interface between the Xerox Alto and the Arpanet, worked on packet radio, and developed floating point microcode for the Alto. After graduation from Stanford he joined the Computer Science Lab at PARC, where he designed the hardware and software for the Etherphone, an ethernet based telephone system.

In 1984 he joined the DEC Systems Research Center in Palo Alto, where he designed the Microvax CPU modules for the Firefly multiprocessor workstation. He also built the Firefly voice hardware, audio server, and a substantial number of client programs which use audio on the Firefly.

In late 1989 he moved to the Boston area and joined the Digital Cambridge Research Lab. In 1990 and 1991, Stewart's major project was the Alpha AXP effort. He was the primary designer of the I/O subsystem for the first Alpha multiprocessor and also worked on the first Alpha AXP based PC, for which he developed software and ported the X Window system.

In 1992 and 1993, Stewart was one of the principal designers and implementors of the AudioFile project. AudioFile is a network transparent, device independent system for handle audio on computers.

In 1994, Stewart joined Open Market, Inc. as Chief Technology Officer. Open Market is a Massachusetts based software company working in the area of Internet commerce, where he had primary responsibility for delivering products and services for an end-to-end solution for enabling commerce on open networks. 

In 1997, Stewart became Chief Scientist of Open Market, with responsibilities for new technologies and product architecture for Open Market's products for Internet and Information Commerce. In addition, he was named an Open Market Fellow in 2000.

In 2001, Stewart co-founded Serissa Research.

Contact:, +1 781 929 5360

Win Treese

Win Treese is President of Serissa Research, Inc. Before co-founding Serissa Research in 2001, he was a Fellow and Vice President of Technology at Open Market, Inc., where he has worked on a wide range of products for e-business applications. Much of his work has particularly focused on the security architecture for those products. He has been with the company since its founding in 1994.

Before joining Open Market, he was a member of the research staff at the Cambridge Research Laboratory of Digital Equipment Corporation, where he worked on several projects, including the design and implementation of Digital's Internet firewall and AudioFile, a distributed system for network audio. Prior to his work at Digital, he was Chief Systems Engineer at MIT's Project Athena, which developed many key technologies in modern computer systems, including the Kerberos network security system. He received an B.S. in Mathematics from the Massachusetts Institute of Technology in 1986, and an M.S. in Computer Science from Harvard University in 1992.

In addition to his work at Open Market, he chairs the Transport Layer Security (TLS) Working Group of the Internet Engineering Task Force (IETF), and edits the regular "Putting It Together" column in NetWorker magazine, published by the ACM. He also chaired the 8th USENIX Security Symposium. Additionally, Mr. Treese is a frequent speaker at industry conferences on a wide range of topics in security and Internet commerce.

Contact:, +1 508 276 1032