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:
Jan. 28, 2020
Filed:
Nov. 18, 2016
Qualcomm Incorporated, San Diego, CA (US);
Peiyuan Wang, San Diego, CA (US);
Chando Park, Irvine, CA (US);
Jimmy Jianan Kan, San Diego, CA (US);
Seung Hyuk Kang, San Diego, CA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
Exemplary features pertain to secure communications using Physical Unclonable Function (PUF) devices. Segments of a message to be encrypted are sequentially applied to a PUF device as a series of challenges to obtain a series of responses for generating a sequence of encryption keys, whereby a previous segment of the message is used to obtain a key for encrypting a subsequent segment of the message. The encrypted message is sent to a separate (receiving) device that employs a logical copy of the PUF device for decrypting the message. The logical copy of the PUF may be a lookup table or the like that maps all permissible challenges to corresponding responses for the PUF and may be generated in advance and stored in memory of the receiving device. The data to be encrypted may be further encoded to more fully exercise the PUF to enhance security. Decryption operations are also described.