The critical information transmission system and the critical information transmitting device, critical information transmission method, being the critical information transmission system which consists of with the

摘要

PROBLEM TO BE SOLVED: To provide an important information transmission system, an important information transmitter, an important information transmission method, a relay device, a relay method, and a program thereof.;SOLUTION: The important information transmitter for transmitting important information to be used for communication to an important information receiver via a relay device includes: a distributed information generating section for distributing the important information into n (2≤n) pieces of distributed information which requires at least k (2≤k≤n) pieces of distributed information for restoring the important information; a distributed information grouping section for grouping the n pieces of distributed information into r (1≤r≤n) pieces of distributed information groups corresponding to the relay devices; and a transmitter side transmitting section for transmitting the distributed information to the r pieces of relay devices respectively.;COPYRIGHT: (C)2010,JPO&INPIT