The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 09, 2021
Filed:
Sep. 29, 2017
Apple Inc., Cupertino, CA (US);
Raghunandan K. Pai, Cupertino, CA (US);
Thomas P. Mensch, Sunnyvale, CA (US);
Navin Bindiganavile Suparna, Santa Clara, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Some embodiments provide a method for recovering user data for a device. To initiate recovery, the method sends to a first server a first request including at least (i) a device identifier and (ii) a first set of cryptographic data for a second set of servers with which the first server communicates. If the first server verifies the device identifier with an attestation authority, the method receives from the second set of servers a second set of cryptographic data generated by the second set of servers. After receiving input of a device passcode for the device, the method sends to the first server a second request comprising at least a third set of cryptographic data for the second set of servers generated based on the device passcode. If the first server verifies the device passcode with the second set of servers, the method receives access to the user data.