Systems and methods for verifying documents

Details Systems and methods for verifying documents Systems and methods for verifying documents

2007-07-03

2007-07-03

Barrón, Jr., Gilberto (Department: 2132)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C382S276000

Reexamination Certificate

active

10248137

ABSTRACT:
Systems and methods for verifying a document. A document having an encoded document data portion that includes assist information and at least one digitally-signed appended one-way hash is inputted. The encoded document data file is decoded and a representation is recovered using the assist information. A verification one-way hash is generated from the recovered representation. The verification one-way hash is then compared to the appended one way hash and the authenticity of the document is verified based on the results of the comparison.

REFERENCES:
patent: 4868877 (1989-09-01), Fischer
patent: 5973692 (1999-10-01), Knowlton et al.
patent: 6453416 (2002-09-01), Epstein
patent: 2003/0037094 (2003-02-01), Douceur et al.
patent: 2003/0210805 (2003-11-01), Lofgren et al.
Secure Identification Documents Via Pattern Recognition and Public-Key Cryptography, Lawrence O'Gorman, Fellow, IEE, and Irina Rabinovich, IEEE Transactions On Pattern Analysis And Machine Intelligence, vol. 20, No. 10, Oct. 1998, 6 pp.

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