A Family of p-ary Binomial Bent Functions
نویسندگان
چکیده
For a prime p with p ≡ 3 (mod 4) and an odd number m, the Bentness of the p-ary binomial function fa,b(x) = Tr1 (ax pm−1) + Tr1(bx pn−1 4 ) is characterized, where n = 2m, a ∈ Fpn , and b ∈ Fp2 . The necessary and sufficient conditions of fa,b(x) being Bent are established respectively by an exponential sum and two sequences related to a and b. For the special case of p = 3, we further characterize the Bentness of the ternary function fa,b(x) by the Hamming weight of a sequence.
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عنوان ژورنال:
- IACR Cryptology ePrint Archive
دوره 2009 شماره
صفحات -
تاریخ انتشار 2009