Patents Examined by Uyen-Chay N. Le
  • Encryption process employing chaotic maps and digital signature process
    Patent number: 6892940
    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.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: May 17, 2005
    Assignee: STMicroelectronics S.r.l.
    Inventors: Ljupco Kocarev, Zarko Tasev, Paolo Amato, Gianguido Rizzotto