Rijndaes算法被美国国家标准技术研究所(NIST)定做分组密码标准后,在安全领域得到广泛的应用,并被随后的NESSIE工程直接吸纳为标准。但同时,由于AES应用的广泛性和基础性,对其的研究和分析,不可避免地成为一个热点。本文结合被NESSIE工程所提出的其他的分组密码算法,提出了一种新的密钥扩展算法,该算法基于一种变形的Feistel网络结构,并在Matlab平台上得以实现。最后分析和证明了和原有算法相比具有的速度效率和安全性能优势。
This paper first points out some AES deficiency that has been found by cryptology researcher and then presents a new key schedule algorithm tbr AES. The new idea is based on a deformed Feistel network structure. It has been realized on Maflab platform. It is proved that the new algorthim is safer and quicker than the original algorithm.