iKP -- A Family of Secure Electronic Payment Protocols
Mihir Bellare and Juan A. Garay
IBM T.J. Watson Research Center
Yorktown Heights, NY
Amir Herzberg, Hugo Krawczyk, Michael Steiner,
Gene Tsudik, and Michael Waidner
IBM Zurich Research Laboratory,
Ruschlikon, Switzerland
Abstract
This paper proposes a family of protocols -- iKP (i=1,2,3) -- for
secure electronic payments over the Internet. The protocols implement
credit card-based transactions between the customer and the merchant
while using the existing financial network for clearing and
authorization. The protocols can be extended to apply to other
payment models, such as debit cards and electronic checks. They are
based on public-key cryptography and can be implemented in either
software or hardware. Individual protocols differ in key management
complexity and degree of security. It is intended that their
deployment be gradual and incremental.
The iKP protocols are presented herein with the intention to serve as
a starting point for eventual standards on secure electronic payment.
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