摘要: In this paper we present a new block cipher over a small finite domain T where ∣T∣ = k is either 2~(16) or 2~(32) . After that we suggest a use of this cipher for enciphering members of arbitrary small finite domains M where M i... 展开 In this paper we present a new block cipher over a small finite domain T where ∣T∣ = k is either 2~(16) or 2~(32) . After that we suggest a use of this cipher for enciphering members of arbitrary small finite domains M where M is contained in T. With cost of an extra mapping, this method could be further extended for enciphering in arbitrary domain M' where ∣M'∣ = k' ≤ k. At last, in a discussion section we suggest a few interesting usage scenarios for such a cipher as an argument that enciphering with arbitrary small finite domains is a very useful primitive on its own rights, as well as for designing of a higher level protocols. 收起