Method and system for detecting fraudulent data update

Details Method and system for detecting fraudulent data update Method and system for detecting fraudulent data update

1997-05-22

1999-11-09

Gregory, Bernarr E.

Cryptography

Cryptanalysis

380 2, 380 23, 380 25, 380 49, 380 50, 395186, 39518701, H04L 900

Patent

active

059828900

ABSTRACT:
A method and system for detecting fraudulent data update of databases connected to a plurality of distributed computers in which a monitor computer connected via a network to the distributed computers detects fraudulent data update. The monitor computer collects initial data of the databases of the distributed computers via the network to generate parities for data at same storage fields and store them in a monitor database. Each time the databases connected to the distributed computers are updated, a parity update unit of the monitor computer generates new parities from data before and after the update and old parities and replaces the old parities stored in the monitor database by the new parities. At an auditing time, the monitor computer collects latest data of the distributed databases and generates parities which are compared with the corresponding parities already stored in the monitor database to detect an inconsistency of both parities.

REFERENCES:
patent: 5530757 (1996-06-01), Krawczyk
patent: 5619571 (1997-04-01), Sandstrom et al.
patent: 5694569 (1997-12-01), Fischer
"Information Security," Nikkei McGraw-Hill Corp. 1987, pp. 243-249, (In Japanese).
Thomas Hardjono et al, "Database Authentication Revisited", Computers & Security International Journal Devoted to the Study of Technical and Financial Aspects of Computer Security, vol. 13, No. 7, Jan. 1, 1994, pp. 573-580.
S. Albert et al, "Reference Model For Data Management Security and Privacy", Sigsac Review, vol. 10, No. 2/03, Jan. 1, 1992, pp. 44-62.

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