US 11,888,989 B2
Methods and systems for key generation
Nancy Louise Davoust, Louisville, CO (US); and Kevin Norman Taylor, Parker, CO (US)
Assigned to COMCAST CABLE COMMUNICATIONS, LLC, Philadelphia, PA (US)
Filed by COMCAST CABLE COMMUNICATIONS, LLC, Philadelphia, PA (US)
Filed on Jun. 26, 2020, as Appl. No. 16/914,063.
Application 16/914,063 is a continuation of application No. 14/671,137, filed on Mar. 27, 2015, granted, now 10,735,200.
Prior Publication US 2021/0075622 A1, Mar. 11, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 29/06 (2006.01); H04L 9/32 (2006.01); H04L 9/08 (2006.01)
CPC H04L 9/3242 (2013.01) [H04L 9/0816 (2013.01); H04L 9/0819 (2013.01); H04L 9/0836 (2013.01); H04L 9/0866 (2013.01); H04L 2209/24 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A method comprising:
accessing, at a first computing device, a first key associated with a service;
generating, based on an identifier for a product class that comprises the first computing device, and based on at least one portion of the first key, a second key unique to the first computing device relative to other computing devices within the product class, wherein the second key is associated with the product class and the service; and
causing, based on the second key, the service to be activated at the first computing device.