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:
Dec. 01, 2015
Filed:
Apr. 30, 2013
Emc Corporation, Hopkinton, MA (US);
Jaimee Brown, Fortitude Valley, AU;
Eric Young, Annerley, AU;
David Paul Makepeace, Middle Park, AU;
EMC Corporation, Hopkinton, MA (US);
Abstract
An improved technique involves storing current and one previous version of the secret shares in their respective databases. Along these lines, authentication servers split the proactivization process into several phases, during which they communicate a failure or success to complete that phase. During one of these phases, the authentication servers delete a previous version of their secret share and label the current version as the previous version. At another phase, the authentication servers generate a new version of each secret share (via one way deterministic transform) and store that new version alongside that previous version. Accordingly, when a user submits secret shares for authentication to the authentication servers, each authentication server determines the state of the corresponding authentication server and chooses the secret share according to that state.