Information security – Prevention of unauthorized use of data including prevention... – Access control
Reexamination Certificate
2005-04-22
2010-12-07
Vu, Kimyen (Department: 2435)
Information security
Prevention of unauthorized use of data including prevention...
Access control
C380S045000, C380S277000, C713S165000, C726S003000
Reexamination Certificate
active
07849514
ABSTRACT:
A system and method for securing data on a mass storage device. A centralized device permission store contains device identifiers for the mass storage devices to be secured along with keys of a symmetric cipher that have been encrypted with public keys or pass phrases of authorized users of the devices. A list of these users also contained in the store. A helper module provides the private key or pass phrase, for imported keys, needed to decrypt the key of the symmetric cipher, which is used to encrypt and decrypt blocks of data stored on the mass storage device. When a read request is made, a protection module intercepts the request, obtains the block from the mass storage device and decrypts the block. When a write request is made, the protection module intercepts the request, encrypts the block and has it stored on the mass storage device.
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Kolishchak Andrey
Usov Viacheslav
Greenberg & Traurig, LLP
Lumension Security, Inc.
Schwartz Darren
Vu Kimyen
LandOfFree
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