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:
Dec. 25, 2007
Filed:
Jul. 22, 2002
Ricardo L DE Queiroz, Pittsford, NY (US);
Ricardo L de Queiroz, Pittsford, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A method enables a recipient of JPEG image data to authenticate the JPEG image data by producing a hashing function from a first section of the JPEG image data. A first integrity checking value is produced from the hashing function produced from the first section of JPEG image data and, from a least significant transmitted bit-plane of a second section of the JPEG image data, an embedded encrypted signature string is extracted and decrypted to generate a second integrity checking value. The first and second integrity checking values are compared and the first section of the JPEG image data is authenticated when the second integrity checking value matches the first integrity checking value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile