Patent №
US 7,302,576
Granted
2007-11-27
Filed 2002
Owner
XEROX CORPORATION
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
10248138
Methods and systems for authenticating documents. Document data to be modified to contain authentication is inputted. A representation is determined from the document data. Assist information that is usable to reliably recover a determined representation is determined. A one-way hash of the representation and assist information is determined. The one-way hash is then cryptographically signed. The assist information and digitally signed one-way hash is then appended to the document.
AI classification
Ownership
XEROX CORPORATION
assignment · 133060857
Assignors
GREENE, DAVID H., GOLDBERG, DAVID, BERN, MARSHALL W.
On an employer assignment, the assignors are typically the inventors.