Method and apparatus for using navigation signal information for geoencryption to enhance security
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United States of America Patent
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Mar 5, 2013
Grant Date -
Dec 24, 2009
app pub date -
Jan 15, 2009
filing date -
Jan 18, 2008
priority date (Note) -
In Force
status (Latency Note)
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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.
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International Classification(s)
- H04L:TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAP....
- G08B:SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; A....
- H04N:PICTORIAL COMMUNICATION, e.g. TELEVISION
- G01N:INVESTIGATING OR ANALYSING MATERIALS BY DETERMININ....
- G06F:ELECTRIC DIGITAL DATA PROCESSING
- G01S:RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMI....
- H04K:SECRET COMMUNICATION; JAMMING OF COMMUNICATION
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