| 摘要 |
PROBLEM TO BE SOLVED: To obtain a result of statistic processing for original data while reducing the risk of leaking the original data.SOLUTION: Each of a plurality of data input devices 10-i includes: means for acquiring original data Xi which should be concealed; and means for dividing the original data Xi into partial data X1i and X2i in accordance with a secret ratio so as to restore the original data Xi when all portions are combined, and outputting the partial data X1i and X2i. Each of cloud services 30-1 and 30-2 performs predetermined arithmetic operation with either the partial data X1i or X2i outputted from each of the plurality of data input devices 10-i as input data and outputs an arithmetic result. A statistic processing result providing service 50 utilizes an arithmetic result outputted from each of the cloud services 30-1 and 30-2, such that the result of statistic processing based on a plurality of items of original data Xi acquired by the plurality of data input devices 10-i is calculated and provided. |
