Process for exchange of rights between microprocessor cards

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United States of America Patent

PATENT NO 5247578
SERIAL NO

07823770

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A process for exchange of rights between microprocessor cards, wherein multiple keys (K1, K2, . . . ) and varied keys (Ka5, Kb3) are used. A card to be debited calculates a voucher with varied key (Ka5) that the card to be credited reconstitutes. The process has application to electronic payment.

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Patent Owner(s)

  • FRANCE TELECOM ETABLISSEMENT AUTONOME DE DROIT PUBLIC (CENTRE NATIONAL D'ETUDES DES TELECOMMUNICATIONS)

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Pailles, Jean-Claude Epron, FR 18 770
Remery, Patrick Caen, FR 7 283
Vallee, Francoise Lantheuil, FR 3 63

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