A security reinforcement method for transmitting key information in a packet transport network

Abstract

The present invention is a security strengthening method for transmitting key information in a packet transmission network, and the steps are as follows: 1. Determine different transmission paths for sending and receiving directions of information; 2. The receiving node agrees on key information data interleaving, interleaving and encryption methods; 3. Data Encapsulate to form N data packets and interleave to form n new data packets; 4. The sending and receiving nodes establish network connections; 5. Add MPLS labels and sequence numbers to new data packets; 6. Interleaving and encryption processing; 7. Sending nodes follow the sending direction The path transmits the processed data packet; 8. The receiving node decrypts, deinterleaves, deinterleaves and restores the key information data packet. The data interleaving of the present invention makes a data packet no longer contain complete data segments in an orderly manner, disrupting the information contained in each data packet; even if the transmission link is intercepted by wiretapping data packets, it will not cause data leakage; The physical paths in the sending and receiving directions are different, which effectively enhances the security and confidentiality of key information transmitted over the packet transport network.

Description

technical field [0001] The invention relates to the field of communication, in particular to a safety reinforcement method for transmitting key information in a packet transmission network suitable for MPLS-TP. Background technique [0002] MPLS is Multi-Protocol Label Switching, which is the abbreviation of English Multi-Protocol Label Switching, and TP is the transmission protocol, which is the abbreviation of English Transport Profile. Packet transport network based on MPLS-TP technology, that is, PTN (Packet Transport Network) network is the current mainstream technology adapting to IP-based communication services and packet-based networks. IETF / ITU-T is responsible for the formulation of relevant standards. MPLS-TP technology simplifies and transforms Multi-Protocol Label Switching and Pseudowire (MPLS / PW) technologies, and introduces concepts such as transport network layering, OAM, and linear protection to meet the needs of transport networks. As a connection-oriente...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the hidden danger of leaking secrets existing in the process of transmitting the key information of important users in the existing MPLS-TP-based packet transport network PTN, and to design a security reinforcement method for transmitting key information in the packet transport network. The means of security and confidentiality include interleaving, interleaving and encryption technology at the logical level to recombine the data packets before sending them, as well as adopting different transmission paths for sending and receiving at the physical level, which increases the difficulty of information interception and improves the reliability of transmitting key information based on the PTN network. Security and Confidentiality

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