Apparatus and method for encrypting and decrypting data recorded on portable cryptographic tokens

Apparatus and method for encrypting and decrypting data recorded on portable cryptographic tokens

A number of client systems receive a common secure transfer key pair from a server during initialization. The secure transfer private key is encrypted in the server with a platform public key sent to the server from the client system. Each client system is then able to encrypt data, using a secure t...

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Hauptverfasser: CROMER DARYL CARVIS, LOCKER HOWARD JEFFREY, TROTTER ANDY LLOYD, WARD JAMES PETER
Format: Patent
Sprache:eng
Schlagworte:
CHECKING-DEVICES
COIN-FREED OR LIKE APPARATUS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PHYSICS
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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creator CROMER DARYL CARVIS
LOCKER HOWARD JEFFREY
TROTTER ANDY LLOYD
WARD JAMES PETER
description A number of client systems receive a common secure transfer key pair from a server during initialization. The secure transfer private key is encrypted in the server with a platform public key sent to the server from the client system. Each client system is then able to encrypt data, using a secure transfer public key, to be recorded on a computer readable medium, and subsequently to decrypt such data using a secure transfer private key. Preferably, each client system includes an embedded security subsystem (ESS) performing cryptographic processes and providing secure key storage. Then, the secure transfer private key is stored as encrypted, and is decrypted using a private key within the ESS. Preferably, the platform private key is also stored encrypted, to be decrypted within the ESS using a hardware private key.
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subjects CHECKING-DEVICES
COIN-FREED OR LIKE APPARATUS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PHYSICS
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
title Apparatus and method for encrypting and decrypting data recorded on portable cryptographic tokens
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