Formal analysis of the iKP electronic payment protocols

  • Authors:
  • Kazuhiro Ogata;Kokichi Futatsugi

  • Affiliations:
  • NEC Software Hokuriku, Ltd.;Japan Advanced Institute of Science and Technology

  • Venue:
  • ISSS'02 Proceedings of the 2002 Mext-NSF-JSPS international conference on Software security: theories and systems
  • Year:
  • 2002

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Abstract

iKP (i-Key-Protocol, i = 1, 2, 3) is a family of payment protocols and one of the ancestors of SET. We have analyzed iKP on the property that if an acquirer authorizes a payment, then both the buyer and seller concerned always agree on it. We have found that even 2KP/3KP do not possess the property and then proposed a possible modification of 2KP/3KP. We have verified that the modified 2KP/3KP possess the property. We mainly describe the verification in this paper.