US Patent No: 7,814,318
Number of patents in Portfolio can not be more than 2000
Scalable file system configured to make files permanently unreadable
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Oct 12, 2010
Issued date -
Sep 27, 2005
filing date -
11/237,478
serial no -
In Force
status
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Abstract
One embodiment of the present invention relates to a system for managing files which facilitates making the files permanently unreadable. During operation, the system maintains file-class keys at a file manager, wherein the file-class keys are associated with different classes of files. If a file belongs to a class of files, the system ensures that whenever the file is stored or updated in non-volatile storage that the file is encrypted with an associated key-manager-file-class key for the class of files. The system makes an entire class of files permanently unreadable by causing an associated key-manager-file-class key, which can be used to decrypt the class of files, to become permanently unreadable.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 6,134,660 Method for revoking computer backup files using cryptographic techniques | 165 | 1997 | |
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| 6,405,315 Decentralized remotely encrypted file system | 129 | 1997 | |
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| 7,333,616 Approach for managing access to messages using encryption key management policies | 8 | 2002 | |
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| 2002/0191,797 Secure ephemeral decryptability | 6 | 2001 | |
Patent Citation Ranking
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