Pre-generation of session keys for electronic transactions and devices that pre-generate session keys for electronic transactions

Pre-generation of session keys for electronic transactions and devices that pre-generate session keys for electronic transactions

Methods and devices for pre-generating session keys for securing transactions are provided. A plurality of session cryptographic keys are generated from a master cryptographic key and a respective plurality of possible values of a transaction counter. The session cryptographic keys are encrypted to...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: HIRD, GEOFFREY R, HOOVER, DOUGLAS N
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CALCULATING
COMPUTING
COUNTING
DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PHYSICS
SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
WIRELESS COMMUNICATIONS NETWORKS
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Beschreibung
Zusammenfassung:Methods and devices for pre-generating session keys for securing transactions are provided. A plurality of session cryptographic keys are generated from a master cryptographic key and a respective plurality of possible values of a transaction counter. The session cryptographic keys are encrypted to provide a plurality of encrypted session cryptographic keys, which are stored in the user terminal. The master cryptographic key is deleted from the user terminal after the session keys are generated. To secure a transaction, a cryptogram is generated based on one of the encrypted session cryptographic keys and transaction data for the transaction, and the cryptogram is transmitted to a transaction terminal. The transaction counter is updated, and the encrypted session cryptographic key is deleted from the user terminal.