PROCEDE DE CERTIFICATION D'UN CUMUL DANS UN LECTEUR

PROCEDE DE CERTIFICATION D'UN CUMUL DANS UN LECTEUR

The invention concerns a method for rollup certification which comprises the following steps: during data exchange between an electronic purse and a reader, transmitting (22) from the reader to the electronic purse the rollup contained in the reader, a certificate associated with said rollup and a c...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: METHLOUTI MOUNJI, VALADIER JEAN LOUIS
Format: Patent
Sprache:fre
Schlagworte:
CALCULATING
CHECKING-DEVICES
COIN-FREED OR LIKE APPARATUS
COMPUTING
COUNTING
DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES
ELECTRIC DIGITAL DATA PROCESSING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:The invention concerns a method for rollup certification which comprises the following steps: during data exchange between an electronic purse and a reader, transmitting (22) from the reader to the electronic purse the rollup contained in the reader, a certificate associated with said rollup and a cryptographic public key corresponding to an unknown private key, with which the certificate has been produced from the rollup; decrypting (24) in the smart card the certificate from the public key and verifying (25) that the rollup is consistent; for the next transaction, computing (21) a new rollup then a new certificate (31) from a private key pertaining to the receiver card; then sending (33) to the reader the new rollup, the new certificate and the public key corresponding to the card which has just carried out the operation, thereby eliminating the need to store in the reader a security circuit to carry out certification.