Analysis of Grain's Initialization Algorithm

机译：谷物初始化算法分析

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In this paper, we analyze the initialization algorithm of Grain, one of the eSTREAM candidates which made it to the third phase of the project. We point out the existence of a sliding property in the initialization algorithm of the Grain family, and show that it can be used to reduce by half the cost of exhaustive key search (currently the most efficient attack on both Grain v1 and Grain-128). In the second part of the paper, we analyze the differential properties of the initialization, and mount several attacks, including a differential attack on Grain vl which recovers one out of 2~9 keys using two related keys and 2~(55) chosen IV pairs.

机译：在本文中，我们分析了Grain的初始化算法，该算法是进入项目第三阶段的eSTREAM候选对象之一。我们指出了Grain系列的初始化算法中存在滑动属性，并表明它可用于将穷举密钥搜索的成本降低一半（目前，这是对Grain v1和Grain-128的最有效攻击）。在本文的第二部分中，我们分析了初始化的差异属性，并进行了几次攻击，包括对Grain vl的差异攻击，后者使用两个相关密钥从2〜9个密钥中恢复了一个，并选择了2〜（55）个IV对。

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《Progress in Cryptology - AFRICACRYPT 2008》|2008年|P.276-289|共14页
会议地点 Casablanca(MA);Casablanca(MA)
作者
Christophe De Canniere; OEzguel Kueguek; Bart Preneel;
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正文语种 eng
中图分类密码、密码机;
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Analysis of Grain's Initialization Algorithm

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