Method for guaranteeing freshness of results for queries...

Details Method for guaranteeing freshness of results for queries... Method for guaranteeing freshness of results for queries...

2007-10-23

2010-10-05

Zand, Kambiz (Department: 2434)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

C713S165000

Reexamination Certificate

active

07809958

ABSTRACT:
A method for guaranteeing freshness of results for queries against a non-secure data store extends a read operation to include steps of: receiving a read instruction for application data to be read; determining a location within the data store for the application data to be read; validating a message authentication code contained at the location; parsing data contained at the location into the application data and control information, the control information including: a timestamp, a link to a check entry, and a message authentication code; authenticating the control information for each check item associated with the primary item along a path from the primary item to a root each time a primary item is read from the data store by following links; and transmitting the application data to a calling application.

REFERENCES:
patent: 5671285 (1997-09-01), Newman
patent: 6584507 (2003-06-01), Bradley et al.
patent: 6772337 (2004-08-01), Yener
patent: 7254701 (2007-08-01), Lu
patent: 2002/0161742 (2002-10-01), Heiden
patent: 523695 (2003-03-01), None
patent: WO 01/33317 (2001-05-01), None

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