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US 7,681,240 B2Granted
Trusted storage systems and methods
AssigneeIntertrust Technologies Corporation
InventorsUmesh Maheshwari, Radek Vingralek, W. Olin Sibert
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Abstract
Systems and methods are disclosed for providing a trusted database system that leverages a small amount of trusted storage to secure a larger amount of untrusted storage. Data are encrypted and validated to prevent unauthorized modification or access. Encryption and hashing are integrated with a low-level data model in which data and meta-data are secured uniformly. Synergies between data validation and log-structured storage are exploited.
Claims6
A method for protecting a database system from external analysis and attack, the method comprising:
- disguising the size of data blocks targeted for storage on a storage medium;
- disguising the frequency with which data blocks are written to the storage medium;
- and
- disguising the location at which data blocks are stored on the storage medium, including relocating data blocks that were previously stored on the storage medium to new, quasi-randomly selected locations on the storage medium when said data blocks are rewritten or updated.
1 more element
Dependencies are inferred from the claim text.