ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,771,543, issued on Oct. 20, was assigned to Comcast Cable Communications LLC (Philadelphia).

"Method and apparatus for secure token generation" was invented by Asad Haque (Chesterbrook, Pa.), Ahmad Al Tamimi (Malvern, Pa.), Liesheng Long (Havertown, Pa.) and Thomas Hughes III (Harleysville, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and apparatuses are described herein for improved communications between a service and end devices via a gateway. A token may be in a signed encrypted state when sent to untrusted devices and may be signed, but not encrypted, when used by trusted devices. Untrusted devices may receive the encrypted token and ...