Systems and methods for verifying documents

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 informat...

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Main Authors Greene, Daniel H, Goldberg, David, Bern, Marshall W
Format Patent
LanguageEnglish
Published 03.07.2007
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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.
AbstractList 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.
Author Goldberg, David
Greene, Daniel H
Bern, Marshall W
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References Epstein (6453416) 20020900
Douceur et al. (2003/0037094) 20030200
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.
Knowlton et al. (5973692) 19991000
Fischer (4868877) 19890900
Lofgren et al. (2003/0210805) 20031100
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