Ciphers with Arbitrary Finite Domains

Ciphers with Arbitrary Finite Domains
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DOI:
10.1007/3-540-45760-7_9
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发表时间:
2002-02
期刊:
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影响因子:
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通讯作者:
J. Black;P. Rogaway
J. Black;P. Rogaway
中科院分区:
其他
文献类型:
--
作者:
J. Black;P. Rogaway

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我们研究了有限集的成员加密问题,其中Mk=|M|是任意的(特别地,它不一定是2的幂)。我们希望从分组密码开始实现这一目标(对于某些人来说,这需要大小为N=2n的消息空间)。我们来看看这个问题的几种解决方案,重点是当M=[0,k-1]时的情况。我们认为,具有任意域的密码本身就是一种有价值的原语,并且对于制定更高级别的协议具有潜在的实用价值。
We explore the problem of enciphering members of a finite setMwherek= ∣M∣ is arbitrary (in particular, it need not be a power of two). We want to achieve this goal starting from a block cipher (which requires a message space of sizeN= 2n, for somen). We look at a few solutions to this problem, focusing on the case whenM= [0,k- 1]. We see ciphers with arbitrary domains as a worthwhile primitive in its own right, and as a potentially useful one for making higher-level protocols.