DATABASE ENCRYPTION DEVICE, DATABASE ENCRYPTION SYSTEM, DATABASE ENCRYPTION METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a database encryption device, a database encryption system, a database encryption method, and a program which prevent leakage of a key by a server administrator, preventing information leakage inexpensively.SOLUTION: A DB encryption device 2 counts a key identification value obtained uniquely from a key received from a key client device 6, associates the key and key identification information, and stores the result in a volatile memory. An encryption controller 1 associates the key identification information with information on data to be encrypted generated by the key client device 6 and stores the result in a nonvolatile memory.