Patent ID: 9729317
Date: 2017-08-08
CPC Classifications: H04L

Claim:
1. A method comprising: generating, by an optical physical uncloneable function (PUF) device in an electronic device, at least a portion of a key in response to received light, wherein the optical physical uncloneable function device includes multiple wave guides, each of the wave guides to propagate the light in a different predetermined optical path defined prior to manufacture of the electronic device, and wherein the at least the portion of the key has a value corresponding to which of the optical paths the light traversed based, at least in part, on optical characteristics of the optical physical uncloneable function device set during the manufacture of the electronic device; receiving, by a security controller, at least the portion of the key from the optical physical uncloneable function device interconnected with the security controller in the electronic device; and initiating, by the security controller a security action through the interconnection when the key matches an expected key in the security controller.