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US 5,623,546 AGranted
Encryption method and system for portable data
AssigneeMotorola, Inc.
InventorsDouglas A. Hardy, Craig R. Fossey, Craig R. Balogh, Steven R. Tugenberg
Life of this patent
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AssigneeMotorola, Inc.
InventorsDouglas A. Hardy, Craig R. Fossey, Craig R. Balogh, Steven R. Tugenberg
Estimating the term…
A system and method allows portable, encrypted data to be accessible through multiple hosts, including new hosts (14), without requiring a secure link to the new hosts. A split key encryption system encrypts (52) data and stores the encrypted data on a portable device (10). A split of the encryption key is stored (54) in the portable device (10), and another split of the key is stored (54) in a home host (12) . A password-modified key is then made (58) by combining a password with the encryption key. This password-modified key is then reduced (58), with one split being stored on the host (12) and another split stored on the portable device (10) . Data can be accessed with a new host (14) by transferring (78) the host password-modified split to the new host (14) and entering (80) the password into the portable device (10).
A method for providing access through a new host to encrypted data using an encryption key, wherein a first split of a password-modified key is stored in a portable encryption device, and a second split of said password-modified key is stored elsewhere, said method comprising the steps of:
A method for providing portable encrypted data which are accessible by multiple hosts without requiring a secure communication link between an existing host and a new host, said method comprising the steps of:
A portable data encryption device comprising:
A system for providing portable encrypted data which are accessible by multiple hosts, wherein said system configures new hosts without requiring a secure link between hosts and said system comprises:
Dependencies are inferred from the claim text.