Patent ID: 7971062

Claim:
A hand-held, portable token for the secure conveyance of a media for use in encrypting data in a data storage device, the token comprising: a first memory operative to hold the media key, the media key having been previously encrypted using a first part of a device key; a second memory operative to hold a second part of the device key; a communication interface; control logic in communication with the first memory, the second memory, and the communication interface, the control logic operative to (a) read the media key from the first memory, (b) further encrypt the media key using the second part of the device key, and (c) transmit the further encrypted media key to the data storage device through the communication interface, the data storage device having stored therein the first and second parts of the device key for use in fully decrypting the media key; and a user input device, the control logic further operative to delete at least one of the media key and the second part of the device key in response to user activation of the user input device; wherein the token lacks the first part of the device key so that the media key cannot be fully decrypted using information stored in the token.