A Key Generation Method Based on Channel Characteristics

Abstract

The invention relates to a key generation method based on channel characteristics, which solves the defects that the existing key generation method cannot be applied to a static wireless environment and is not resistant to active attacks. The method of the present invention first performs random signal transmission, and the terminals A and B of the legal communication parties each generate a random signal and send it to the other party; after receiving the random signal from the other party, the terminal A and B generate an initial random key for generating a shared key source; terminals A and B conduct consensus negotiation on the generated initial key sequence sum, remove or correct the inconsistent bits in the initial key sequence, and obtain a consistent key sequence; finally, terminals A and B use the confidentiality enhancement protocol to obtain The consistent key sequence is processed to obtain a highly confidential final key. The present invention improves the key generation rate and the security of the key under the condition that no two parties' channel estimation is required, and is suitable for both static network environment and dynamic network environment.

Description

technical field [0001] The invention belongs to the technical field of wireless network security, and relates to a key generation method based on channel characteristics. Background technique [0002] Security issues have always been an important problem facing wireless network security communications. At present, this problem is mainly solved by encryption and authentication technologies. According to the Kerckhoff criterion, the security of modern cryptosystems depends on the security of keys, and the security distribution of keys Negotiation and negotiation are the core of the cryptographic system and are crucial to the security of the entire network. Traditional key distribution and negotiation are mostly implemented based on security infrastructure. However, in a dynamic and mobile wireless network environment, it is difficult to complete the deployment of security infrastructure such as certification centers or key distribution centers, and key management in wireless ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a key generation method based on channel characteristics for the inherent defects in existing key generation schemes based on channel characteristics, so as to solve the problem that existing key generation methods cannot be applied to static wireless environments and are not Anti-active attack defects, improve the key generation rate and key security under the condition that the communication parties do not need channel estimation

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