Patent ID: 9203609
Filing Date: 2015-12-01
Classification: H04L

Abstract:
1. A method comprising: accessing a modified keystream on a memory device, wherein the modified keystream is created by the memory device based on a generated keystream and a keystream received by the memory device from a second device; determining, via a processor, a session key based on the generated keystream and the modified keystream, wherein the generated keystream was previously transmitted to the memory device in an instance in which the memory device was in radio communications range; transmitting communications data to the memory device or to the second device, wherein the communications data is protected using at least a portion of the session key and is intended for the second device; determining a second session key based on a second generated keystream and a second modified keystream; wherein the second modified keystream is created by the memory device based on the second generated keystream and a keystream received by the memory device from a third device; and transmitting communications data to the memory device, wherein the communications data is secured using the second session key and is intended for the third device.