SECRET DISTRIBUTION SYSTEM SECRET DISTRIBUTION DEVICE SECRET DISTRIBUTION METHOD SECRET SORTING METHOD SECRET DISTRIBUTION PROGRAM

摘要

The secret distribution system of the present invention comprises N secret distribution devices. The secret distribution system of the present invention is provided with a fragment replacement means and a redistribution means. The fragment replacement means selects less than N secret distribution devices, creates the bijective p of {1, ���, K} ? {1, �� �, K} among the selected secret distribution devices, and sets, to the k-th fragment, the fragment ap(k)i (where i is the number indicating the selected secret distribution devices) recorded by the selected secret distribution devices. The redistribution means obtains a new fragment by using and redistributing the fragment corresponding to the numerical value replaced by the fragment replacement.