US 12,335,733 B1
Wireless signal validation using a one-way function and an initially unknown input
Gregory Gutt, Herndon, VA (US); Tim Flynn, New York, NY (US); and David G. Lawrence, Santa Clara, CA (US)
Assigned to Satelles, Inc., Reston, VA (US)
Filed by Satelles, Inc., Reston, VA (US)
Filed on Aug. 2, 2021, as Appl. No. 17/391,658.
Int. Cl. H04W 12/122 (2021.01); G01S 19/05 (2010.01); H04L 9/32 (2006.01); H04W 12/03 (2021.01); H04W 12/63 (2021.01); H04W 84/06 (2009.01)
CPC H04W 12/122 (2021.01) [G01S 19/05 (2013.01); H04L 9/3242 (2013.01); H04W 12/03 (2021.01); H04W 12/63 (2021.01); H04W 84/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for validation of wireless signals, the method comprising:
receiving wirelessly, by a receiver and from a first transmission source, a first signal having a first component spread below a level of noise with a spreading code unknown to the receiver, the spreading code being based on a one-way function with an input to the one-way function unknown to the receiver when receiving the first signal; then
receiving wirelessly, by the receiver, a second signal including the input, the second signal received from a second transmission source different than the first transmission source;
replicating, from the input received in the second signal, at least part of the spreading code; and
validating the first signal based on the replicated at least part of the spreading code, the validating distinguishing between the first signal as authentic and a spoof.