Abstract
摘要: LBLOCK是吴文玲等人于2011年设计的一种轻量级密码算法。该文利用一个特殊的相关密钥差分特征，对19轮的LBlock算法进行了相关密钥不可能差分攻击，攻击的计算复杂度为O(270.0)，所需要的数据量为264。进一步，提出了一种针对21轮LBlock的相关密钥不可能差分攻击，计算复杂度为O(271.5)，数据量为263。 关键词: 密码分析 / LBlock算法 / 相关密钥攻击 / 不可能差分
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