Anonymous safety communication method applicable to MANET (mobile ad-hoc network) network layer

Abstract

The invention provides an anonymous safety communication method applicable to an MANET (mobile ad-hoc network) network layer. The anonymous safety communication method includes a system initializing step, a shared-key negotiation step, a route discovery step and a data sending step. In the system initializing step, a PKG (private key generator) generates a master key and network public parameters, the master key is kept by the PKG, and the network public parameters are published to all nodes in a network; the PKG generates a public key and a private key both corresponding to each node according to ID (identification) of each node, publishes the public keys to all the nodes and publishes the private keys to the corresponding nodes. In the shared-key negotiation step, negotiation on a shared key and a communication sequence number between a source node and a target node is achieved according to an IBE (identity-based encryption) protocol, and the shared key is a symmetrical key. In the route discovery step, an anonymous route path between the source node and the target node is established according to the negotiated shared key and the negotiated communication sequence number on the basis of an onion encryption protocol. In the data sending step, data transmission from the source node to the target node along the anonymous route path is achieved by the onion encryption protocol. By the anonymous safety communication method, identity information safety, position information safety and route information safety of the nodes in the network can be protected effectively.

Description

technical field [0001] The invention relates to the field of communication network security, in particular to an anonymous security communication method suitable for MANET network layer. Background technique [0002] Mobile ad hoc network (MANET) is suitable for emergency and temporary occasions due to its open wireless communication medium, node mobility and self-organizing characteristics, but it also makes it vulnerable to various security threats and attacks, such as passive Eavesdropping, data tampering and retransmission, false identity and denial of service, etc. Researchers have proposed many corresponding security solutions for the above-mentioned possible attacks, providing security guarantees in terms of confidentiality, integrity, authenticity, availability, and non-repudiation of communication content. [0003] The anonymous security of MANET aims to protect users' private information, and it is receiving more and more attention in important occasions such as m...

AI Technical Summary

Problems solved by technology

[0004] In MANET, AODV (On-demand Distance Vector Routing Protocol) and DSR (Dynamic Source Routing Protocol) routing are the most commonly used on-demand routing protocols, but their problem is that the source node and destination node information and routing In the packet forwarding stage, since the IP addresses of the source node and the destination node are also public in the IP protocol, it is very easy to leak node information

However, the existing problem is that before the communication, the dual communication needs to issue certificates to each other for confirmation, and the maintenance and update of the certificates will increase the amount of communication and calculation

In order to solve the problem of updating fake IDs, MASK requires PKG to provide each user with enough fake IDs and corresponding key sets in advance, but this not only increases the calculation amount of PKG, but also consumes the user's memory

After the fake ID is used up, the user has to reuse it, which also reduces security

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