The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 29, 2012
Filed:
Jun. 14, 2006
Applicants:
Mingkang Xu, Fremont, CA (US);
Daniel Manhung Wong, Sacramento, CA (US);
Inventors:
Mingkang Xu, Fremont, CA (US);
Daniel ManHung Wong, Sacramento, CA (US);
Assignee:
Oracle International Corporation, Redwood Shores, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
One embodiment of the present invention provides a system that facilitates detecting data tampering within a table in a database. The system operates by hashing a row in the table to create a row-hash. The system then hashes a block of consecutive row-hashes to create a block-hash. Finally, the system signs the block-hash with an encryption key, so that tampering with data in the row will result in an invalid row-hash and an invalid block-hash.