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本文对一类特殊的二次布尔公钥码给出了有效的破译方法,并证明了破译所需的运算量不超过O(n~7)。文末对布尔公钥体制的频谱分析方法作了初步探讨。
In this paper, an effective method of deciphering a class of quadratic Boolean public key is given, and the computational complexity of deciphering is proved to be no more than O (n ~ 7). At the end of this article, the method of spectrum analysis of Boolean public key system is discussed.