Article ID: CBB760734420

Edge Cryptography and the Codevelopment of Computer Networks and Cybersecurity (2016)


Developed around 1973 by BBN under contract from DARPA, the private line interface (PLI), a cryptographic cybersecurity device used on the Arpanet, operated with minimal modification of the existing network infrastructure, sitting at the "edge" of the network between the network switches and the connected host computers. As a result of the developmental and infrastructural trajectory set in motion by the PLI, significant cryptographic resources remain at the edges (or ends) of the networks that constitute the Internet today. This study of the PLI is an entry into the historical relationship between cryptography and packet-switched computer networks.

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Article Yost, Jeffrey R. (2016) Computer Security, Part 2 -- Editor's Introduction. IEEE Annals of the History of Computing (pp. 10-11). unapi

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Authors & Contributors
Yost, Jeffrey R.
Aspray, William F.
Russell, Andrew Lawrence
Fidler, Bradley Reuben
Brand, Stewart
Salus, Peter H.
IEEE Annals of the History of Computing
Technology and Culture
MIT Press
Peer-to-Peer Communications Inc.
Temple University Press
The MIT Press
Yale University
History of Computing
Computer networks
Computer security; cyber security
Baran, Paul
Tomlinson, Raymond W.
Kemeny, John G. (1926-1993)
Kurtz, Thomas E.
Time Periods
20th century
20th century, late
21st century
United States
Soviet Union
Minnesota (U.S.)
American Telegraphone Company
National Science Foundation (U.S.)
Computer History Museum
United States. Defense Advanced Research Projects Agency (DARPA)
United States. Defense Communications Agency
Symantec Corporation

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