US 12,341,875 B2
Efficient authentic communication system and method
Brian Sullivan, Amersham (GB); Dinah Sloan, San Jose, CA (US); Christian Aabye, Redwood City, CA (US); Hao Ngo, San Jose, CA (US); Yuexi Chen, Foster City, CA (US); and Fahimeh Rezaei, Mountain View, CA (US)
Assigned to Visa International Service Association, San Francisco, CA (US)
Filed by Visa International Service Association, San Francisco, CA (US)
Filed on Mar. 7, 2024, as Appl. No. 18/598,621.
Application 18/598,621 is a continuation of application No. 17/288,441, granted, now 11,956,349, previously published as PCT/US2018/057973, filed on Oct. 29, 2018.
Prior Publication US 2024/0214186 A1, Jun. 27, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 9/08 (2006.01); H04L 9/32 (2006.01)
CPC H04L 9/0825 (2013.01) [H04L 9/0869 (2013.01); H04L 9/3263 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A communication device comprising:
a processor;
a memory device; and
a computer-readable medium coupled to the processor, the computer-readable medium comprising code executable by the processor for implementing a method comprising:
receiving, from an access device, a resource provider certificate and an access device certificate;
establishing a secure channel between the access device and the communication device using data from the resource provider certificate and the access device certificate; and
transmitting to or receiving data from the access device using the secure channel,
wherein before the secure channel is established, the method further comprises:
determining a resource provider public key using data in the resource provider certificate;
determining an access device public key using data in the access device certificate and the resource provider public key; and
deriving a first session key using the access device public key and a communication device private key, wherein the first session key is used to form the secure channel.