AGGREGATOR NODE, METHOD FOR AGGREGATING DATA, AND COMPUTER PROGRAM PRODUCT

摘要

PROBLEM TO BE SOLVED: To provide a method for exchanging and processing data without causing a serious privacy problem in a network including unprotected network nodes.SOLUTION: An aggregator node 301 is configured to be used in a network and to aggregate encrypted data. The aggregator node comprises a secure element 305 which is configured to execute aggregation of encrypted data in a secure manner. The aggregator node decrypts the encrypted data by using a first encryption key 306, aggregates the decrypted data, and encrypts the aggregated data by using a second encryption key 303 in a model embodiment. The secure element executes the aggregation of the encrypted data.