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Abstract

A data management system and method for a limited cryptographic storage unit, such as a smartcard or other hardware token, includes a cryptographic data manager that interfaces with the limited capacity cryptographic storage unit and a data overflow memory coupled to the cryptographic data manager. The cryptographic data manager stores cryptographic data, such as decryption private keys or other secret cryptographic data, in the overflow memory from the limited capacity cryptographic storage unit based on a limited capacity storage unit data update condition. The cryptographic data manager may serve as a secondary cryptographic data manager that receives the cryptographic data from an original cryptographic data storage device, or primary storage device such as a server that generates the cryptographic data, that stores a history of the cryptographic data.

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First Claim