AES coprocessor system and AES structure in wireless sensor network node application

Abstract

In order to overcome the defects of overlarge hardware cost and power consumption and unsuitable integration in a wireless sensor network node in the design of a plurality of prior AES coprocessors, the invention provides a module reuse method in AES coprocessors apply for wireless sensor network node. The method mainly utilizes the multiplexing technology and process optimization to finish an encrypting and decrypting function by fewest submodules. The AES structure process adopts multiplexing ways of internal turn resource share, each high level module multiplexing submodules and external turn single cycle and can encrypts / decrypts. The invention can reduce application cost and hardware expenditure and effectively lower power consumption on the basis of ensuring reliable data, and the system throughput rate also conforms to the requirement of a wireless sensor network and is suitable for using VLSI hardware. In the special application of the wireless sensor network node, an AES encrypting and decrypting coprocessor in the structure can be closer to practical application as supplying the reliable data.

Description

Technical field [0001] The invention relates to an encryption and decryption algorithm, especially a design method and system of an AES coprocessor in a low-cost and low-power consumption specific environment of a wireless sensor network node. Background technique [0002] In recent years, due to the wide application prospects, the research of wireless networked smart sensors has attracted great attention from all parties, and has become a research hotspot, but there are many factors to be considered or problems to be studied. Security is an important aspect of this. Nowadays, wireless networks are widely used, but wireless networks lack sufficient security due to their special transmission methods, and the information transmitted on the network will be threatened by illegal eavesdropping, tampering and destruction at any time. Using data encryption technology to encrypt information can greatly improve the security of wireless networks. With the continuous development of W...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of excessive hardware cost and power consumption in most existing AES coprocessor designs, which are not suitable for integration in wireless network nodes, the present invention proposes a design based on a system-level framework based on multiplexing technology method

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