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:
Aug. 04, 2020
Filed:
Nov. 01, 2017
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Nikolaos Triandopoulos, Arlington, MA (US);
Kevin Bowers, Melrose, MA (US);
Ari Juels, Brookline, MA (US);
Ronald Rivest, Arlington, MA (US);
Guoying Luo, Lexington, MA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
Static and dynamic embodiments are presented for generating chaff passwords for use in a password-hardening system. Chaff passwords are generated by modifying portions of base passwords based on a distribution with which particular strings of digits and symbols appear in user passwords. Location oblivious chaff passwords are generated from a chaff set of passwords obtained from a chaff generation method by applying a random permutation over the elements of the obtained chaff set of passwords.