Web本发明公开了一种基于SPN结构的轻量级分组密码算法Shadow实现方法、装置及计算机可读介质,其中方法包括如下步骤:获取64 ... 在密码学中,一个S盒(Substitution-box,替换盒)是對稱密鑰加密算法执行替换计算的基本结构。在块密码中,它们通常用于模糊密钥与密文之间的关系——香农的混淆理论 。 通常,S-Box接受特定数量的输入比特m,并将其转换为特定数量的输出比特n,其中n 不一定等于m 。一个m×n的S盒可以通过包含2 条目,每条目n比特的查找表实现。S盒通常是固定的(例如DES和AES加密算法), 也有一些加密算法的S盒是基于密钥动态生成的(例如Blowfish和双鱼算法加 …
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