关键词: 分组密码 P置换 MDS码 自对偶MDS码 广义RS码

Abstract:

The MDS codes in the coding theory have lots of cryptographic usage, they have been used to design the Ppermutation in many block ciphers. In this paper, we discuss the linear permutation of cipher on self-dual MDS codes, which can lead to many good permutations. We will give a new method to construct  the self-dual MDS permutation, and this method is based on the generalized Reed-Solomon codes of the coding theory.

Key words: block cipher, P-permutation, MDS code;self-dual MDS code, generalized Reed-Solomon code