提出一种基于混沌细胞自动机的分组密码算法,采用固定边界条件下反向加密正向解密的Feistel迭代方式,计算机模拟的实验结果证明:该算法在固定密钥的密文差错扩散率和固定明文的密文差错扩散率接近50%,可有效对抗差分攻击、穷举明文和穷举密钥攻击.
This paper presents a block cipher algorithm based on the chain-rules CA,which is by means of iterating cellular automata backward-to-encryption and forward-to-decryption at a fixed boundary. The results show the error propagation of ciphertext with an unchanged key and ciphertext with an unchanged plaintext is close to 50%. This cryptosystem can resist known-plaintext attack and known- ciphertext attack.
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