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.

Date of Patent:
Dec. 30, 2014

Filed:

Jun. 27, 2008
Applicants:

Kristjan E. Hatlelid, Sammamish, WA (US);

Kelvin S. Yiu, Seattle, WA (US);

Inventors:

Kristjan E. Hatlelid, Sammamish, WA (US);

Kelvin S. Yiu, Seattle, WA (US);

Assignee:

Microsoft Corporation, Redmond, WA (US);

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 29/00 (2006.01); H04L 9/32 (2006.01); H04L 29/06 (2006.01);
U.S. Cl.
CPC ...
H04L 9/321 (2013.01); H04L 63/0823 (2013.01); H04L 9/3265 (2013.01); H04L 2209/805 (2013.01);
Abstract

Techniques and systems for authentication with an untrusted root between a client and a server are disclosed. In some aspects, a client may connect to a server. The server and client may initiate a secure connection by exchanging certificates. The server may accept a client certificate having an untrusted root that does not chain up to a root certificate verifiable to the server certificate authority. In further aspects, the server may enable the client to associate an untrusted certificate with an existing account associated with the server. The client certificate may be hardware based or generated in software, and may be issued to the client independent of interactions with the server.


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