Peter, That paper was the result of my dissertation. The reference is Physical-One Way Functions R. Pappu, B. Recht, J. Taylor, N. Gershenfeld Science, vol. 297, pp. 2026-2030, 20 September 2002 The actual paper is available from http://web.media.mit.edu/~pappu/htm/publications.htm The current issue of RSA's Cryptobytes has a more detailed article. http://www.rsasecurity.com/rsalabs/cryptobytes/ Best, Ravi --------- Ravi Pappu ravi@thingmagic.com / off: +1.617.758.4136 / fax: +1.707.215.0156 ThingMagic LLC, One Broadway 14th Floor, Cambridge, MA 02142. USA. http://www.thingmagic.com Please note new mobile phone #: 617-642-6681 --------- --- end forwarded text -- ----------------- R. A. Hettinga <mailto: rah@ibuc.com> The Internet Bearer Underwriting Corporation <http://www.ibuc.com/> 44 Farquhar Street, Boston, MA 02131 USA "... however it may deserve respect for its usefulness and antiquity, [predicting the end of the world] has not been found agreeable to experience." -- Edward Gibbon, 'Decline and Fall of the Roman Empire'