公开(公告)号：US20220368546A1

公开(公告)日：2022-11-17

申请号：US17809047

申请日：2022-06-27

Applicant: Verizon Patent and Licensing Inc.

Inventor： Muhammad Salman Nomani ,  John M. Stokes

IPC: H04L9/00 ,  H04L9/08 ,  H04L51/21 ,  H04L51/04

Abstract: A system described herein may provide for secure group messaging between multiple participant devices, in which two or more of the participant devices support blockchain-based techniques for the secure sharing of keys used to secure the group messaging, and in which one or more of the participant devices (e.g., a third device) do not support such techniques. A key escrow system may maintain keys associated with the third device, and the other devices of the group messaging system may retrieve such keys from the key escrow system. Such other devices may attempt to obtain keys associated with the third device from a blockchain and may retrieve such keys from the key escrow system when the retrieval from the blockchain is unsuccessful. The other devices may additionally share their respective keys to the blockchain and the key escrow system, or the key escrow system may “pull” such keys from the blockchain.

公开(公告)号：US20220368524A1

公开(公告)日：2022-11-17

申请号：US17658966

申请日：2022-04-12

Applicant: Verizon Patent and Licensing Inc.

Inventor： Muhammad Salman Nomani ,  John M. Stokes

IPC: H04L9/08 ,  H04L9/00

Abstract: A system described herein provides for the secure maintaining and providing of information, such as public keys used in Public Key Infrastructure (“PKI”) techniques or other techniques, using a distributed ledger (e.g., “blockchain”) system with a fallback to a key escrow system. A first device may encrypt a communication using a first key, and output the encrypted communication to a second device. The first device may attempt to record a second key, that is associated with the first key, to the blockchain system, and may determine that the second key was not recorded to the blockchain system based on the attempt. The first device may output the second key to a third device based on determining that the second key was not recorded to the blockchain system. The second device may obtain the second key from the third device, and use the second key to decrypt the encrypted communication.