Cisco is the world's leading provider of network solutions. According to a patent application disclosed by the US Patent and Trademark Office, they are developing a technology that makes it easier and more secure for confidential groups to send instant messaging, share files, and more. Blockchain technology for information.

In fact, in the dynamic, decentralized and self-built groups where the instant messaging team is located, member information is often tampered with. Cisco hopes to use the advantages of blockchain technology to provide a solution to ensure that group member information is tampered with. Securely create, update and maintain.

Cisco offers a confidential group authorization solution in which the data blocks in the group will be arranged sequentially, with the device of the first group participant creating the "genesis" block, followed by every other session member , they will also generate their own blocks. All of these blocks store group membership information and the information cannot be tampered with.

The patent application, filed in December 2017, mentions multiple versions of the system. In one possible version, the first block supports defining the initial set of group members, and uses the blockchain to record group membership information, including adding and deleting members; in another version, communication group participants can Establish a P2P network through shared encryption keys and enable secure file sharing or instant messaging.

In fact, Cisco's blockchain patented technology has many use cases, which can meet the end-to-end encryption of real-time information, streaming media and shared content, and help developers more easily implement group communication protocols and applications.

Not only that, Cisco has actually started to deploy blockchain technology very early. They have also submitted a blockchain patent before, using a distributed network to track IoT devices.