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:
Sep. 19, 2017
Filed:
Feb. 11, 2016
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Jonathan M. Luk, Bellevue, WA (US);
Ariel N. Gordon, Kirkland, WA (US);
Raman N. Chikkamagalur, Sammamish, WA (US);
Ziad Elmalki, Redmond, WA (US);
Sergii Gubenko, Sammamish, WA (US);
Girish Chander, Redmond, WA (US);
Anandhi Somasekaran, Redmond, WA (US);
Murli D. Satagopan, Kirkland, WA (US);
MICROSOFT TECHNOLOGY LICENSING, LLC, Redmond, WA (US);
Abstract
The subject disclosure is directed towards securely synchronizing passwords that are changed at a source location (e.g., an on-premises directory service) to a target location (e.g., a cloud directory service), so that the same credentials may be used to log into the source or target location, yet without necessarily having each domain controller handle the synchronization. The plaintext password is not revealed, instead using hash values computed therefrom to represent the password-related data. The target may receive a secondary hash of a primary hash, and thereby only receive and store a password blob. Authentication is accomplished by using the same hashing algorithms at the target service to compute a blob and compare against the synchronized blob. Also described are crypto agility and/or changing hashing algorithms without requiring a user password change.