| 摘要 |
PURPOSE:To check the security finely at high speed, by giving supplementary permission information, which becomes effective only when each program accesses actually a data set, to the program. CONSTITUTION:A data use permission information storage part 14 indicates the use permission of unit data of every prescribed unit in a data storage device, and a program use permission information storage part 15' indicates the use permission of programs of every prescribed unit in a program storage device. In case of the execution of a program or data, contents of a profile storage part 8 and contents of the storage part 15' corresponding to this execution unit are checked, and the program or data is executed on condition that they coincide with each other. When the execution is permitted, supplementary permission information corresponding to the execution unit is stored additionally in the storage part 8, and corresponding supplementary permission information is removed from the storage part 8 when this execution unit is terminated. |
