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:
Aug. 09, 2022
Filed:
Apr. 28, 2020
Sagemcom Broadband Sas, Rueil Malmaison, FR;
Antonie Rocquelay, Rueil Malmaison, FR;
Olivier Mevissen, Rueil Malmaison, FR;
SAGEMCOM BROADBAND SAS, Rueil Malmaison, FR;
Abstract
In a secure end-to-end transmission of data between a first device and a second device via a message broker, the following are performed: a sharing of an entropy pool between the first device and the second device via the message broker, by means of signalling messages, any payload of which is encrypted asymmetrically and which comprise a message signature; and a transmission of subsequent messages between the first device and the second device via the message broker, each said subsequent message comprising a header and a payload, the header comprising an identifier of an authentication key obtained from the shared entropy pool and an identifier of a symmetrical encryption key obtained from the shared entropy pool, the payload being encrypted symmetrically by means of the symmetrical encryption key, and the whole formed by the header and the payload being authenticated by means of a message authentication code obtained by means of the authentication key and inserted in the header. Thus, the subsequent messages benefit from the non-repudiation afforded by the way in which the entropy pool was previously shared.