US 12,192,328 B1
Systems and methods for secure communication based on random key derivation
Jeff J. Stapleton, O'Fallon, MO (US)
Assigned to Wells Fargo Bank, N.A., San Francisco, CA (US)
Filed by Wells Fargo Bank, N.A., San Francisco, CA (US)
Filed on May 10, 2022, as Appl. No. 17/662,707.
Int. Cl. H04W 12/37 (2021.01); H04L 9/08 (2006.01); H04L 9/32 (2006.01)
CPC H04L 9/0825 (2013.01) [H04L 9/0852 (2013.01); H04L 9/0869 (2013.01); H04L 9/3242 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A method for secure communication based on random key derivation, the method comprising:
receiving, by communications hardware of a first device, an initial key shared between the first device and a second device;
receiving, by the communications hardware of the first device, a first set of seed bits, wherein the first set of seed bits is also received by the second device;
deriving, by key derivation circuitry of the first device, a first symmetric key based on the initial key and the first set of seed bits; and
performing, by data protection circuitry of the first device, a first cryptographic data protection action using the first symmetric key,
wherein the first cryptographic data protection action facilitates secure communication between the first device and the second device based on the second device having also derived the first symmetric key.