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:
Jul. 27, 2021
Filed:
Jan. 04, 2019
Applicant:
Cryptography Research, Inc., Sunnyvale, CA (US);
Inventors:
Paul C. Kocher, San Francisco, CA (US);
Pankaj Rohatgi, Los Altos, CA (US);
Joshua M. Jaffe, San Francisco, CA (US);
Assignee:
CRYPTOGRAPHY RESEARCH, INC., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 21/57 (2013.01); G06F 21/60 (2013.01); H04L 9/08 (2006.01); H04L 9/32 (2006.01); G06F 21/55 (2013.01); H04L 9/00 (2006.01); G06F 12/14 (2006.01); H04L 9/06 (2006.01); H04L 9/16 (2006.01); G06F 9/445 (2018.01); G06F 21/76 (2013.01); G06F 8/71 (2018.01); H04L 29/06 (2006.01); G06F 21/75 (2013.01);
U.S. Cl.
CPC ...
G06F 21/575 (2013.01); G06F 8/71 (2013.01); G06F 9/44505 (2013.01); G06F 12/1408 (2013.01); G06F 21/556 (2013.01); G06F 21/602 (2013.01); G06F 21/76 (2013.01); H04L 9/003 (2013.01); H04L 9/0631 (2013.01); H04L 9/085 (2013.01); H04L 9/088 (2013.01); H04L 9/0861 (2013.01); H04L 9/0894 (2013.01); H04L 9/16 (2013.01); H04L 9/3236 (2013.01); H04L 9/3247 (2013.01); H04L 9/3271 (2013.01); G06F 21/755 (2017.08); G06F 2212/402 (2013.01); G06F 2221/034 (2013.01); G06F 2221/2107 (2013.01); G06F 2221/2125 (2013.01); G06F 2221/2145 (2013.01); H04L 63/0428 (2013.01); H04L 63/0869 (2013.01); H04L 2209/24 (2013.01); H04L 2209/38 (2013.01); H04L 2209/56 (2013.01); H04L 2463/061 (2013.01);
Abstract
A method for device authentication comprises receiving, by processing hardware of a first device, a message from a second device to authenticate the first device. The processing hardware retrieves a secret value from secure storage hardware operatively coupled to the processing hardware. The processing hardware derives a validator from the secret value using a path through a key tree. The first device then sends the validator to the second device.