	US 12,192,343 B2
	Scalable content restriction
Kyong Park, Woodbine, MD (US)
Assigned to Comcast Cable Communications, LLC, Philadelphia, PA (US)
Filed by Comcast Cable Communications, LLC, Philadelphia, PA (US)
Filed on Oct. 23, 2023, as Appl. No. 18/491,918.
Application 18/491,918 is a continuation of application No. 18/085,262, filed on Dec. 20, 2022, granted, now 11,843,694.
Application 18/085,262 is a continuation of application No. 17/187,297, filed on Feb. 26, 2021, granted, now 11,563,568, issued on Jan. 24, 2023.
Claims priority of provisional application 62/982,459, filed on Feb. 27, 2020.
Prior Publication US 2024/0163086 A1, May 16, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 9/08 (2006.01); H04L 9/40 (2022.01)

CPC H04L 9/085 (2013.01) [H04L 9/0819 (2013.01); H04L 9/0872 (2013.01); H04L 63/107 (2013.01)]

24 Claims

1. A method comprising:

based on a determination that a first group of devices, of a plurality of devices, are authorized to receive first restricted content, sending, by a computing device to the first group of devices and for derivation of a key, a portion of a plurality of portions of the key, wherein the portion and one or more previously received portions of the key are configured to be used to obtain access to the first restricted content;

sending, to the first group of devices, the first restricted content; and

based on a determination that a second group of devices, of the plurality of devices, are not authorized to receive the first restricted content, sending, to the second group of devices, an indication of second content different from the first restricted content.