| 摘要 |
PROBLEM TO BE SOLVED: To provide energy use data management.SOLUTION: Provided is a method that includes receiving energy use data representing the use of electric energy by a customer during a specific period. The energy use data is signed by the digital signature of a public business operator. The present method includes receiving customer input having the effect of selecting a data block of the energy use data. The present method includes deleting the data block selected from the energy use data in response to the input. The present method includes calculating a hash value about the deleted data block by using a customer key unique to the customer, an initialization vector, and a counter. The present method includes replacing, in the energy use data, the deleted data block with the calculated hash value that corresponds to the deleted data block. |
