Patent ID: 11956349
Assignee: VISA INTERNATIONAL SERVICE ASSOCIATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. An access 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:
transmitting, to a communication 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 communication device using the secure channel,
wherein before the secure channel is established, the communication device:
determines a resource provider public key using data in the resource provider certificate and a certificate authority public key;
determines an access device public key using data in the access device certificate and the resource provider public key; and
derives 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.