Distribution method of threshold keys of mobile Ad hoc network

Abstract

The invention relates to a distribution method of threshold keys of a mobile Ad hoc network (MANET). The method is characterized in that: a multiple signcryption algorithm, which is based on identity and is suitable for safety requirements of an MANET, is provided; and then the multiple signcryption algorithm is applied to key management of the MANET, and a safe and high-efficient distribution method of the threshold keys of the MANET is provided. According to the invention, a multiple signcryption technology is employed. Therefore, reliability of threshold key management of the MANET is increased; the problem that a node of a service requestor is required to have a plurality of neighboring service nodes with a jogging step in the prior art can be solved; the key distribution that is carried out jointly by service nodes is allowed; and thus the safety and the high efficiency of threshold key distribution of the MANET can be ensured well.

Description

technical field [0001] The invention relates to a method for distributing a threshold key of an ad hoc network, belonging to the technical field of wireless network security, and relates to a cryptographic technology for realizing secure communication of an ad hoc network, in particular to a method for safely and efficiently distributing a threshold key of an ad hoc network. Background technique [0002] Mobile Ad hoc Network (MANET, Mobile Ad hoc Network) is a new type of wireless network, which is a multi-hop, distributed autonomous communication system composed of a group of mobile terminals with wireless communication devices. In this kind of network, two terminals that cannot communicate directly due to the limited wireless communication coverage, communicate with the forwarding of other terminal nodes in the network, so this kind of network is also called multi-hop wireless network. With its advantages of fast networking, strong adaptability, and low cost, it has been ...

AI Technical Summary

Problems solved by technology

First, like other existing threshold key management methods for mobile ad hoc networks, in order to obtain the required private key component from the service node, the node must contact at least t of its one-hop neighbor service nodes, and this The first requirement cannot always be guaranteed "at any time and anywhere", because it is impractical and difficult to require each node to find at least t one-hop neighbor service nodes; second, each of the t nodes will generate The private key component is sent to the private key requesting node separately, and the service requesting node must interact with t PKG nodes separately. This method does not fully utilize the advantages of joint service provision; third, the storage and transmission of key information in key management is Confidentiality and authenticity protection are required at the same time, and the characteristics of the mobile ad hoc network require that the cryptographic technology to achieve these security goals must be efficient, but the signcryption algorithm used in the existing methods is used for wired networks. High calculation and transmission costs, not suitable for mobile ad hoc networks

[0007] To sum up, the existing technology of threshold key management in mobile ad hoc networks has deficiencies in the reliability and efficiency of achieving security goals, which is especially reflected in the parallel distribution of threshold keys. The cryptographic technology adopted Cannot meet the requirements of mobile ad hoc network key management

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