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:
Apr. 26, 2022
Filed:
Jun. 27, 2019
Iot and M2m Technologies, Llc, Evanston, IL (US);
John A. Nix, Evanston, IL (US);
lOT AND M2M TECHNOLOGIES, LLC, Evanston, IL (US);
Abstract
A server can record a device static public key (Sd) and a server static private key (ss). The server can receive a message with (i) a device ephemeral public key (Ed) and (ii) a ciphertext encrypted with key K. The server can (i) conduct an EC point addition operation on Sd and Ed and (ii) send the resulting point/secret Xto a key server. The key server can (i) perform a first elliptic curve Diffie-Hellman (ECDH) key exchange using Xand a network static private key to derive a point/secret X, and (ii) send Xto the server. The server can conduct a second ECDH key exchange using the server static private key and point Xto derive point X. The server can conduct an EC point addition on Xand Xto derive X. The server can derive Kusing Xand decrypt the ciphertext.