Shee-Yau Wu Shih-Chuan Lu Chi-Sung Laih Design of AES Based on Dual Cipher and Composite Field. 25-38 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2964&spage=25 2004 conf/ctrsa/2004 CT-RSA db/conf/ctrsa/ctrsa2004.html#WuLL04