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
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影响因子:
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通讯作者:
J. Black;P. Rogaway
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文献类型:
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作者:
J. Black;P. Rogaway
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.