Method for encryption authentication on Ad hoc network transmission layer protocol

Abstract

The invention discloses a method for encryption authentication on an Ad hoc network transmission layer protocol, which comprises five parts and 18 steps, wherein the five parts are a configuration stage, an authentication stage, a key negotiation stage, an encryption process and a key update flow. The encryption authentication method of the invention is applied to a hand shaking process in the end-to-end communication between two nodes in a multihop Ad hoc network, wherein the two nodes pass through message authentication code verification (MAC) for mutual verification; after the authentication successes, key negotiation is performed by using an elliptic curve diffie-hellman (ECDH) algorithm; and a subsequent message is encrypted by using a shared key acquired in the key negotiation process as a key material and by using an advanced encryption standard (AES) algorithm, and a key update flow is initiated in a communication process. In the authentication and key negotiation process, an exclusive or gate (XOR) algorithm is used for encrypting authentication information and key negotiation information, the safety is high, the efficiency is high, the system expense is small, and the encryption strength is high; and thus, the method has a promising application prospect in the technical field of wireless networks.

Description

(1) Technical field [0001] The invention relates to an encryption and authentication method for ensuring end-to-end communication security of an ad hoc network (Ad hoc network), in particular to an encryption and authentication method on the transport layer protocol of the Ad hoc network, which belongs to the technical field of wireless networks. (2) Background technology [0002] Ensuring communication security is a challenge that network applications must face, especially in wireless environments. The present invention is based on the Ad Hoc network, it does not need the support of infrastructure, and can realize communication through the free networking of nodes. The research on the Ad hoc network is initiated by military communication applications, and military applications are still its main focus at present. At the same time, it also has a very broad application prospect in the civilian field, which can support mobile commerce, mobile conferences, information exchange ...

AI Technical Summary

Problems solved by technology

Use XOR operation as encryption operation, if you use brute force cracking, as mentioned m XOR n=k, assuming k has L (L is the number of digits with larger median of m and n) bit length, then just go from k Reverse the values ​​of m and n, there are 2 L It can be seen that the encryption strength of the XOR operation is still very high

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