结合混沌实现Rijndael算法的密钥调度

加密是保护个人和企事业单位重要信息乃至国家机密的重要手段,Rijndael加密算法作为新的高级加密标准,由于其诸多优点而具有广泛的应用前景.现代的加密算法都是基于密钥的,然而,迄今为止,很少有人研究Rijndael算法的密钥调度部分,尤其是如何生成Rijndael算法初始密钥.针对这一情况,研究了混沌Logistic映射,利用Logistic映射产生的混沌序列的高随机性特点,采用混沌算法来生成初始密钥,并给出了相应的CPLD实现.

Realizing Key Schedule of Rijndael Algorithm Integrating with Chaos

Encryption is an important method which is used to protect the information of an individual and enterprises and the secret of nations. Rijndael algorithm is the new advanced encryption standard, and has extensive application foreground because of its much merit. Modem encryption algorithms are based on keys. However, so far few of people research into the key schedule of rijndael algorithm and especially do research on the generation of its initial keys. This paper researches into the mapping of Logistic, makes use of a chaos algorithm to produce initial encryption keys because it can create chaos sequences of high randomicity. Further more, corresponding CPLD implementation is given.