Patent ID: 7231048
Filing Date: 2007-06-12
Classification: H04L

Abstract:
1. A key sharing system for enabling a first key sharing apparatus and a second key sharing apparatus to share a key, using a public key XεGF(n) which belongs to a Galois finite field GF(n) for an integer n (n≧2), and which is equal to or larger than 2 and smaller than n, and a polynomial T(•, •) which is defined in the Galois finite field GF(n) by where S(•, •) is a Chebyshev polynomial defined by where a is an integer (a≧2), and said first key sharing apparatus and said second key sharing apparatus are connected with each other via a computer network, wherein: (a) said first key sharing apparatus comprises (b) said second key sharing apparatus comprises (c) said first key sharing apparatus further comprises (d) said second key sharing apparatus further comprises