一种构造密码学性质较好的奇数维函数的方法

A new method to construct odd dimensional functions with comparably good crypt properties

本文提出一种利用多输出Bent函数构造密码学性质较好的奇数维函数的方法,这里构造出的函数有比较均匀的差分分布和Walsh谱值分布,用作分组密码体制中的非线性逻辑时,能有效地抵抗差分分析和线性分析的攻击。

In this paper, a new method to construct odd dimensional functions with comparably good crypt properties using multi-output Bent function is put forward. Functions we constructed has comparably uniform differential distributing and Walsh-Spectrum distributing, hence can consist differential analysis and linear analysis efficiently when used as non-linear logic in block cipher.