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搜索结果: 1-7 共查到密码学 Even-Mansour ciphers相关记录7条 . 查询时间(0.078 秒)
Chen et al. proved that two variants of the two-round n-bit Even-Mansour ciphers are secure up to 22n/3 queries against distinguish- ing attacks. These constructions can be regarded as minimal two-rou...
The iterated Even--Mansour (EM) ciphers form the basis of many block cipher designs. Several results have established their security in the CPA/CCA models, under related-key attacks, and in the indiff...
The r-rounds Even-Mansour block cipher uses r public permutations of {0,1}n and r+1 secret keys. An attack on this construction was described in \cite{DDKS}, for r=2,3. Although this attack is only ma...
The simplicity and widespread use of blockciphers based on the iterated EvenMansour (EM) construction has sparked recent interest in the theoretical study of their security. Previous work has estab...
We study how to construct efficient tweakable block ciphers in the Random Permutation model, where all parties have access to public random permutation oracles. We propose a construction that combines...
The iterated Even-Mansour construction defines a block cipher from a tuple of public $n$-bit permutations $(P_1,\ldots,P_r)$ by alternatively xoring some $n$-bit round key $k_i$, $i=0,\ldots,r$, and a...
Iterated Even-Mansour scheme (IEM) is a generalization of the basic 1-round proposal (ASIACRYPT ’91). The scheme can use one key, two keys, or completely independent keys.

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