Patents by Inventor Ron Karpf

Ron Karpf has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for using navigation signal information for geoencryption to enhance security
    Patent number: 8391488
    Abstract: A data encryption and decryption system securely geoencrypts data using location-dependent navigation signals. To increase the entropy of the cryptographic key to guard against a brute-force attack, geoencryption is made to depend on largely time-independent characteristics of the navigation signals that are not easily spoofed, including the time difference of arrival, the envelope-to-cycle difference, the differential signal-to-noise, the signal envelope shape, and the directions of arrival of the navigation signal set.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: March 5, 2013
    Assignees: Geocodex LLC, Leland Stanford Junior University
    Inventors: Di Qiu, Sherman Lo, Per Enge, Logan Scott, Dan Boneh, Ron Karpf
  • METHOD AND APPARATUS FOR USING NAVIGATION SIGNAL INFORMATION FOR GEOENCRYPTION TO ENHANCE SECURITY
    Publication number: 20090316900
    Abstract: A data encryption and decryption system securely geoencrypts data using location-dependent navigation signals. To increase the entropy of the cryptographic key to guard against a brute-force attack, geoencryption is made to depend on largely time-independent characteristics of the navigation signals that are not easily spoofed, including the time difference of arrival, the envelope-to-cycle difference, the differential signal-to-noise, the signal envelope shape, and the directions of arrival of the navigation signal set.
    Type: Application
    Filed: January 15, 2009
    Publication date: December 24, 2009
    Inventors: Di QIU, Sherman LO, Per ENGE, Logan SCOTT, Dan BONEH, Ron KARPF