Cryptography – Key management
Reexamination Certificate
2011-01-04
2011-01-04
Simitoski, Michael J (Department: 2439)
Cryptography
Key management
C380S278000, C380S279000, C380S282000, C380S285000, C380S286000, C713S193000
Reexamination Certificate
active
07864960
ABSTRACT:
Techniques for securing content in an untrusted environment are provided. Content is encrypted and stored with a content delivery service in an encrypted format. Encrypted versions of a content encryption/decryption key and a first key are also housed and distributed by the content delivery service. The first key is used to decrypt the encrypted version of the content encryption/decryption key. The content delivery service is unaware of the content encryption/decryption key and the first key; and the content held by the content delivery service is encrypted with the content encryption/decryption key. Principals securely share, create, manage, and retrieve the encrypted versions of the content encryption/decryption key and the first key from the content delivery service using secure communications. The encrypted content is obtainable via insecure communications from the content delivery service.
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Green Tammy Anita
Nicolet Jim Alan
Srinivasaraghavan Haripriya
Kabir Jahangir
Novell Inc.
Schwegman Lundberg & Woessner, P.A.
Simitoski Michael J
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