US 11,750,387 B2
End-to-end encryption for sessionless communications
Gayathri Sundar, Irving, TX (US); and Mayank Shah, East Windsor, NJ (US)
Assigned to CITICORP CREDIT SERVICES, INC. (USA), Jacksonville, FL (US)
Filed by Citicorp Credit Services, Inc. (USA), Jacksonville, FL (US)
Filed on Nov. 3, 2022, as Appl. No. 17/980,363.
Application 17/980,363 is a continuation of application No. 17/317,261, filed on May 11, 2021, granted, now 11,502,839.
Prior Publication US 2023/0058273 A1, Feb. 23, 2023
Int. Cl. H04L 9/32 (2006.01); H04L 9/14 (2006.01); H04L 9/08 (2006.01)
CPC H04L 9/3213 (2013.01) [H04L 9/0819 (2013.01); H04L 9/0861 (2013.01); H04L 9/14 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
generating, by a first server, a request to retrieve keys for a customer device to access a service, the request including a first token encrypted using a first encryption key; and
transmitting, by the first server, the request to a second server to validate the first token;
receiving, by the first server from the second server, a second token including (i) at least a portion of the first token and (ii) a set of second encryption keys, responsive to validating the first token;
decrypting, by the first server responsive to receiving, the second token using the first encryption key; and
transmitting, by the first server to the customer device, a response including the second token decrypted using the first encryption key, the second token to be used by the customer device in accessing the service via the second server.