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:
Oct. 19, 2021
Filed:
Sep. 12, 2019
Trustonic Limited, Cambridge, GB;
Richard Hayton, Cambridge, GB;
TRUSTONIC LIMITED, Cambridge, GB;
Abstract
To establish a first protected communication channel between a device D and a first server S, a symmetric key Kis derived at the device D, based on a device identifying key Kand public key information dependent on a first server public key Sof the first server S. The symmetric key Kis derived in a corresponding way at a second server T. The symmetric key Kis transmitted from the second server T to the first server S on a second protected communication channel. Communication on the first protected communication channel between the device D and the first server S is protected using a communication key Kwhich is dependent on the symmetric key K. This can enable a device D lacking support for asymmetric key cryptography to securely enter into communication with the first server S.