| 摘要 |
PROBLEM TO BE SOLVED: To provide a common key sharing system for sharing a common key between an SM (smart meter) and a resident terminal that are owned by the same resident.SOLUTION: A common key sharing system includes: a resident terminal 200 having a resident terminal ID 211 and holding a common key; an SM 100 having an SM ID 111 and holding a common key to be shared with the resident terminal 200; and an MDMS (meter data management system) 500 for checking whether the resident terminal ID and a resident ID 521 to be received are previously registered in a database 510, generating a common key between the SM having an SM ID 522 stored in the database in association with the resident terminal ID and the resident terminal having the resident terminal ID when the resident terminal ID and the resident ID are previously registered in the database, and transmitting the generated common key to the resident terminal 200 and the SM 100.SELECTED DRAWING: Figure 1 |
