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给出一个嵌套Feistel结构的SP型分组密码的模型及其抵抗差分密码分析和线性密码分析的可证明安全性 ,所获得的结果主要基于对SP型密码的可证明安全性的一个推广性结果的证明 依照模型 ,给出了一个具体的分组密码的例子
A model of SP-type block ciphers with nested Feistel structure and its demonstrable security against differential cryptanalysis and linear cryptanalysis are given. The results obtained are mainly based on a generalized result of the demonstrable security of SP-type ciphers According to the model, a specific block cipher example is given