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:
Dec. 16, 2025
Filed:
Mar. 20, 2024
Ringcentral, Inc., Belmont, CA (US);
David Livshits, Modiin-Maccabim-Reut, IL;
Lev Rosenblit, Shoham, IL;
Dmitrii Bukreev, Petah Tikva, IL;
Robert Behar, Hadera, IL;
RingCentral, Inc., Belmont, CA (US);
Abstract
An end-to-end encrypted communication system securely provides session keys for encrypted session history recovery for new members or reconnecting members of an encrypted session. The encrypted session history recovery adapts the end-to-end encryption for secure distribution of the encrypted content and session keys that were exchanged before the members connected to the encrypted session. The system receives encrypted content from a first member of the encrypted session during a first time when the first member is online and a second member of the encrypted session is offline and not connected to the encrypted session. The system detects that the second member comes online and connects to the encrypted session at a second time, and provides the second member with a session key associated with decrypting the encrypted content that was exchanged prior to the second member connecting to the encrypted session.