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:
Aug. 26, 1997
Filed:
Feb. 18, 1994
Applicant:
Inventors:
Robert Nagel, New York, NY (US);
Thomas H Lipscomb, New York, NY (US);
Assignee:
Infosafe Systems, Inc., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
380-4 ; 380 23 ; 380 25 ; 380 52 ;
Abstract
A system including a storage medium containing encrypted information comprises: (a) a control unit for selecting information to be retrieved from the storage medium; (b) a storage medium reader for reading the selected information from the storage medium; and (c) a decryption device for decrypting at least portions of the selected information using a decryption key. The decryption key is defined, at least in part, by rules and/or data which are read from the storage medium by the storage medium reader. A different and unique key is associated with each separate item or file of encrypted information.