Patent ID: 9166972
Filing Date: 2015-10-20
Classification: H04L

Abstract:
1. A holding device being an i th holding device among n holding devices to which n pieces of shared information, a first through an n th pieces of shared information, have been assigned on a one-to-one basis, an i th piece of shared information having been assigned to the i th holding device, the n pieces of shared information having been generated by segmentation of one piece of private information, “i” being an integer in a range from 1 to n, the i a storage unit; a first writing unit operable to obtain the i an obtaining unit operable to obtain one or more pieces of shared information having been assigned to one or more holding devices that are different from the i a second writing unit operable to write the obtained one or more pieces of shared information into the storage unit, wherein a first through an n the obtaining unit obtains an (i−1) a node is to be newly added adjacent to the i the i a receiving unit operable to receive a notification that the additional holding device is to be added; a reading unit operable to, after the receiving unit receives the notification, read out an i a generating unit operable to generate additional partial information; a calculating unit operable to perform a calculation onto the read-out i an output unit operable to output the generated additional partial information to the additional holding device.