| 摘要 |
PROBLEM TO BE SOLVED: To perform partial tabulation of data while keeping data confidential.SOLUTION: A program uses a first homomorphic encryption and a second homomorphic encryption enabling partial tabulation of plain sentence data of doubly encrypted encryption data by performing calculation using the plurality of pieces of encryption data, to obtain encryption data doubly encrypted and attribute information, associates the obtained encryption data and attribute information with each other to store them in a storage unit, and makes a computer execute processing of calculating a plurality of pieces of encryption data corresponding to predetermined attribute information. |
