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. 08, 2022
Filed:
Dec. 20, 2019
Fujitsu Limited, Kawasaki, JP;
Avradip Mandal, San Jose, CA (US);
Arnab Roy, Santa Clara, CA (US);
Hart Montgomery, Redwood City, CA (US);
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A method may include obtaining a secret key, a user device secret key, and a server secret key based on the secret key and the user device secret key. The method may include dividing the user device secret key into a plurality of user device shares and the server secret key into a plurality of server shares. The method may include distributing the plurality of user device shares to a plurality of user devices and the plurality of server shares to a plurality of service providers. The method may include obtaining a public key based on the secret key. The method may also include publishing the public key. The method may include obtaining a recovery authority secret key and a recovery vault secret key such that a user may recover an account if the user devices and/or the service providers are compromised.