公开(公告)号：US12301703B2

公开(公告)日：2025-05-13

申请号：US17484827

申请日：2021-09-24

Applicant: Cisco Technology, Inc.

Inventor： Richard L. Barnes

IPC: H04L9/08 ,  H04L9/14

Abstract: In one embodiment, an illustrative method herein may comprise: determining, by a device of a communication session, that a new epoch has occurred within the communication session, wherein the communication session has one or more member devices; generating, by the device and in response to the new epoch, a new key encryption key and a key bundle comprising one or more keys to decrypt content of the communication session from one or more previous epochs of the communication session; encrypting, by the device, the key bundle with the new key encryption key to create an encrypted key bundle; and sharing, from the device, the encrypted key bundle with the one or more member devices to allow the one or more member devices to access the content of the communication session from the one or more previous epochs.

公开(公告)号：US20230102966A1

公开(公告)日：2023-03-30

申请号：US17484827

申请日：2021-09-24

Applicant: Cisco Technology, Inc.

Inventor： Richard L. Barnes

IPC: H04L9/08 ,  H04L9/14

Abstract: In one embodiment, an illustrative method herein may comprise: determining, by a device of a communication session, that a new epoch has occurred within the communication session, wherein the communication session has one or more member devices; generating, by the device and in response to the new epoch, a new key encryption key and a key bundle comprising one or more keys to decrypt content of the communication session from one or more previous epochs of the communication session; encrypting, by the device, the key bundle with the new key encryption key to create an encrypted key bundle; and sharing, from the device, the encrypted key bundle with the one or more member devices to allow the one or more member devices to access the content of the communication session from the one or more previous epochs.