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...size=-1>ELLARE
Department of Computer Science & Engineering, Mail Code 0114, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA. E-mail: mihir@cs.ucsd.edu. URL: //www-cse.ucsd.edu/ users/mihir. Supported in part by a 1996 Packard Foundation Fellowship in Science and Engineering, and by NSF CAREER Award CCR-9624439.
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...size=-1>ARAY
Information Sciences Research Center, Bell Laboratories, 600 Mountain Ave, Murray Hill, NJ 07974. E-mail: garay@research.bell-labs.com. URL: www.bell-labs.com/user/garay/.
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...size=-1>UTLA
IBM T.J. Watson Research Center, PO Box 704, Yorktown Heights, New York 10598. E-mail: csjutla@watson.ibm.com.

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...size=-1>UNG
CertCo, 280 Park Avenue, New York, NY 10017, USA. E-mail: moti@certco.com.
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...number.
Another possibility is that this payment is made by credit card, in which case an iKP/SET-type protocol [3,21] may be used, instead of the protocol we are describing here. The issuer would play the role of the merchant in SET.

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Juan A. Garay
7/20/1998