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. 03, 2015
Filed:
Dec. 19, 2012
Dropbox, Inc., San Francisco, CA (US);
Dan Lowe Wheeler, San Francisco, CA (US);
Dropbox, Inc., San Francisco, CA (US);
Abstract
A password evaluation system is provided for determining the password strength of a password. A password is provided for evaluation. The password is parsed and substrings are identified from the password. Each substring is associated with a pattern that can generate the substring. The substrings are scored to determine a substring strength measure for the substring. The substrings are combined to identify non-overlapping substring combinations, which together make up the password. The combinations are assigned a combination strength score based in part on the substring strength of the substrings contained in the substring combinations. The substring combination with the lowest combination strength measure is identified and the associated combination strength measure is used as the password strength measure for the password.