Cryptography – Key management
Reexamination Certificate
2007-01-09
2011-11-22
Dada, Beemnet (Department: 2435)
Cryptography
Key management
C705S071000
Reexamination Certificate
active
08064604
ABSTRACT:
One embodiment of the present invention provides a system that facilitates role-based cryptographic key management. The system operates by receiving a request at a database server from a user to perform a cryptographic operation on data on the database server, wherein the user is a member of a role, and wherein the role has been granted permission to perform the cryptographic operation on the data. Next, the system receives from the user at the database server a user key, which is associated with the user. The system then unwraps a wrapped role key with the user key to obtain a role key, which is associated with the role. Next, the system unwraps a wrapped data key with the role key to obtain a data key, which is used to encrypt and decrypt the data. Finally, the system uses the data key to perform the cryptographic operation on the data.
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Dada Beemnet
Oracle International Corporation
Park Vaughan Fleming & Dowler LLP
Shirazi Sayed Beheshti
Yao Shun
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