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所谓FEAL-8指的是一种8圈FEAL密码体制。目前普遍假设该体制自1989年提出以来,已被一些密码分析者在选择明文攻击的基础上进行了攻击。然而到目前为止,公开发表的只有Bert Den Boer提出的对于FEAL-4(4圈)的密码分析。本文提出一种对FEAL-8密码体制的选择明文攻击方法,此方法是建立在其数据随机方案某些统计特性基础之上的。
The so-called FEAL-8 refers to a 8 laps FEAL password system. It is now generally assumed that the system, since its introduction in 1989, has been attacked by some cryptanalysts on the choice of plaintext. However, so far, only the published password analysis for FEAL-4 (4 laps) has been published by Bert Den Boer. This paper proposes a plaintext attack method for FEAL-8 cryptosystem, which is based on some statistical characteristics of random data scheme.