AES dynamic encryption method based on 6lowpan local area networking

By using IPv6 addresses transformed into a 4×4 byte matrix as the AES dynamic key in 6LoWPAN local area networking, combined with a static key, the security problem caused by the long-term invariance of the AES static key is solved, terminal authentication and data encryption/decryption are realized, and network security is improved.

CN115942304BActive Publication Date: 2026-07-21四川启睿克科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
四川启睿克科技有限公司
Filing Date
2022-11-10
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In 6LoWPAN local area networks, the static AES key remains unchanged for a long time, which means that once attacked, the network security is no longer available. In addition, the lack of a centralized entity to verify new users allows malicious actors to create multiple users and obtain symmetric encryption keys to crack the ciphertext of other terminals in the network.

Method used

The dynamic key portion of the AES encryption key is generated by transforming the IPv6 address into a 4×4 byte matrix and combining it with a pre-made static key. Authentication and data encryption/decryption are achieved by matching the terminal IP address, and a dynamic session key is generated.

Benefits of technology

This system ensures that each terminal within the network has a unique key, preventing network attacks, ensuring communication security, preventing malicious users from forcibly executing their will, and improving network security.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides an AES dynamic encryption method based on 6LoWPAN local area networking, which comprises the following steps: step 1: a local area network is constructed according to 6LoWPAN technology, and a network adaptation layer is added between the network layer and the MAC layer; step 2: after the 6LoWPAN local area network is successfully constructed, a network administrator preforms an IPv6 address array of each terminal networking member and an initialized static key byte in each terminal; step 3: when each terminal in the local area network needs to communicate with each other, a request initiator obtains the local IPv6 address and converts it into a byte array to generate a dynamic key for this session; step 4: after receiving the request, the receiver obtains the IPv6 address of the initiator, matches the IPv6 address with the preformed IPv6 address of the local area network member of the receiving terminal, and if the authentication is successful, the address is converted into a byte array to generate a decryption key for this session. According to the production of the dynamic key based on the networking IPv6 address, the risk that the networking key is leaked after a single terminal is attacked and the ciphertext in the network is completely cracked is prevented.
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