| 一类分组密码的S盒重组算法 |
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| 引用本文： | 杨宏志,韩文报. 一类分组密码的S盒重组算法[J]. 计算机应用, 2009, 29(8) |
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| 作者姓名： | 杨宏志 韩文报 |
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| 作者单位： | 信息工程大学,信息工程学院,郑州,450002;信息工程大学,信息工程学院,郑州,450002 |
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| 基金项目： | 国家自然科学基金重大项目，国家高技术研究发展计划(863计划) |
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| 摘 要： | S盒是许多分组密码唯一的非线性部件,它的密码强度决定了整个密码算法的安全强度.足够大的S盒是安全的,但为了便于实现,分组密码多采用若干小S盒拼凑.针对一类分组密码算法,通过将S盒与密钥相关联,给出了S盒重组算法,丰富了S盒的应用模式,有效提高了分组密码的安全强度.
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| 关 键 词： | 分组密码 S盒 重组 |
S-boxes reorganization algorithm for a class of block ciphers |
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| YANG Hong-zhi,HAN Wen-bao. S-boxes reorganization algorithm for a class of block ciphers[J]. Journal of Computer Applications, 2009, 29(8) |
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| Authors: | YANG Hong-zhi HAN Wen-bao |
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| Affiliation: | Institute of Information Engineering;Information Engineering University;Zhengzhou Henan 450002;China |
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| Abstract: | S-boxes are the only nonlinear components in many block cipher algorithms,and they decide the security strength of the whole algorithm. Generally speaking,a big enough S-box is secure. However,for the convenience of implementation,several small S-boxes were combined. Concerning one class of block ciphers,an S-boxes reorganized algorithm was given,which enriched S-boxes application patterns and improved the security strength. |
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| Keywords: | block cipher S-box reorganization |
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