US 12,204,648 B2
Transfer of ownership of a computing device via a security processor
Md. Nazmus Sakib, Seattle, WA (US); Bryan David Kelly, Carnation, WA (US); Ling Tony Chen, Bellevue, WA (US); and Peter David Waxman, Seattle, WA (US)
Assigned to Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed by Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed on Dec. 22, 2023, as Appl. No. 18/393,843.
Application 18/393,843 is a continuation of application No. 17/330,170, filed on May 25, 2021, granted, now 11,893,118.
Prior Publication US 2024/0256674 A1, Aug. 1, 2024
Int. Cl. G06F 21/57 (2013.01); G06F 21/62 (2013.01); H04L 9/08 (2006.01); H04L 9/32 (2006.01)
CPC G06F 21/575 (2013.01) [G06F 21/572 (2013.01); G06F 21/6209 (2013.01); H04L 9/0891 (2013.01); H04L 9/3236 (2013.01); H04L 9/3247 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a processor; and
memory coupled to the processor, the memory comprising computer executable instructions that, when executed, perform operations comprising:
detecting an indication of a transfer of ownership of the system from a first user to a second user;
identifying a public key of the second user, the public key being used to verify information of the second user;
programming a first set of fuses to store the public key of the second user, wherein programming the first set of fuses is independent to a second set of fuses storing a public key of the first user; and
invalidating the public key of the first user by blowing a fuse associated with the second set of fuses.