【摘要】 密码技术,特别是加密技术,是信息安全技术的核心。AES征集和NESSIE计划的相继启动,使得国际上又掀起了一次研究分组密码的新高潮,故概括介绍了国内外分组密码研究的现状,并对其发展趋势进行了分析。同时详细地探讨与分析了分组密码的主要理论与技术,最后介绍了Rijndael(AES的最终算法)与IDEA(NESSIE分组密码候选算法之一)的两个算法。更多还原

【Abstract】 Technologies of cryptography,especially,encipherjment techniques is the core of information security technologies,the new climax of research block cipher has been raised once again because of AES and NESSIE projects successive launching.This pa-per first introduces summarily status quo of block cipher,and analyzes trend of block cryptography.Second,the thesis approaches and analyzes detailedly primary theory and technology of block cipher.Finally,it depicts the Rijndael(AES’ algorithm)and IDAE(a candidate of the1st round NESSIE’block cipher)two cryptographic algorithms.更多还原