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:
May. 17, 2005
Filed:
Apr. 06, 2004
Ljupco Kocarev, San Diego, CA (US);
Zarko Tasev, San Diego, CA (US);
Paolo Amato, Limbiate, IT;
Gianguido Rizzotto, Civate, IT;
Ljupco Kocarev, San Diego, CA (US);
Zarko Tasev, San Diego, CA (US);
Paolo Amato, Limbiate, IT;
Gianguido Rizzotto, Civate, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
An encryption process includes choosing a secret key and a set of permutable functions defined on a phase space for encrypting/decrypting messages, choosing a code for encoding messages to be sent as a number belonging to the phase space. The set of permutable functions includes chaotic maps generated by a composite function of first and second functions, and an inverse of the first function. The secret key is defined by the second function.