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Group-Based Key Exchange Protocol Based on Complete Decomposition Search Problem

机译:基于完整分解搜索问题的基于组的密钥交换协议

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Let G be a finite non-abelian group. Let A_1, … , A_k be nonempty subsets of G, where k ≥ 2 is an integer such that A_i ∩ A_j =? for integers i, j = 1, … ,k (i ≠ j). We say that (A_1,…, A_k) is a complete decomposition of G if the product of subsets A_(i_1) … A_(i_k) = {a_(i_1)…a_(i_k)|a_(i_j) ∈ A_(i_j) = 1, … , k} coincides with G where the A_(i_j) are all distinct and {A_(i_1), … ,A_(i_k)} = {A_1, … ,A_k}. The complete decomposition search problem in G is defined as recovering B ? G from given A and G such that AB = G. The aim of this paper is twofold. The first aim is to propose the complete decomposition search problem in G. The other objective is to provide a key exchange protocol based on the complete decomposition search problem using generalized quaternion group Q_(2~n) as the platform group for integer n > 3. In addition, we show some constructions of complete decomposition of generalized quaternion group Q_(2~n). Further, we propose an algorithm that can solve computational complete decomposition search problem and show that the algorithm takes exponential time to break the scheme.
机译:设G为有限非阿贝尔群。让A_1,...,A_k为G的非空子集,其中k≥2是一个整数,使得A_I∩A_j =?对于整数I,J = 1,...,K(I≠j)的。我们说(A_1,...,A_k)是G的完全分解,如果子集的A_(I_1)... A_(I_K)= {A_(I_1)... A_(I_K)产品| A_(i_j)∈A_(i_j )= 1,...,以G在A_(i_j)k个一致}所有不同和{A_(I_1),...,A_(I_K)} = {A_1,...,A_k}。 G中的完全分解搜索问题定义为回收乙?从给定的A G和G,使得AB = G的目的本文的是双重的。第一个目的是提出一种完全分解搜索问题在G.另一目的是提供基于使用广义四元组Q_(2〜N),作为整数n> 3的平台组完全分解搜索问题的密钥交换协议此外,我们显示广义四元组Q_(2〜N)的完全分解的一些结构。此外,我们建议可以解决计算完全分解搜索问题,并表明,该算法需要指数时间打破方案有关的算法。

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