| 摘要 |
PROBLEM TO BE SOLVED: To improve the reliability of illegal rewriting suppression of stored information compared with only logical means.SOLUTION: "Temperature" of a physical phenomenon to rewriting of a storage device is one condition for permitting rewriting. A condition for permitting rewriting is, for example, that there is a temperature change of a fixed range or more to a measured temperature at a reference time. To further weight the condition, being a fixed temperature state can be added. When responding to a rewriting request, whether to satisfy the temperature condition is detected. |
