INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD, INFORMATION PROCESSING PROGRAM, SECRET SHARING SYSTEM, SECRET SHARING METHOD, SECRET SHARING PROGRAM, SECURE COMPUTATION SYSTEM, SECURE COMPUTATION METHOD, AND SECURE COMPUTATION PROGRAM

摘要

The present invention addresses the problem of implementing new information processing.　Implemented is an information processing system including a node constituting a block chain network, wherein the node comprises a sharing means and a restoration means, the sharing means performs secret sharing at least based on generation of a plurality of shares constituting data that the node has, and storage of some of the shares in a newest undetermined block in a block chain stored in the block chain network, and the restoration means acquires the some shares at least from the block chain, and restores the data at least on the basis of the some shares.