VALIDITY CONFIRMATION OF SENSOR DATA EXPRESSED BY CHARACTERISTIC FUNCTION

摘要

PROBLEM TO BE SOLVED: To reduce or eliminate defects and problems concerning the previous technique for data processing.SOLUTION: In one embodiment, a characteristic function indicating data is received. A first hash code calculated from the characteristic function is received. The characteristic function is converted into an arithmetic function. A second hash code is calculated from the arithmetic function. In cases where the first hash code equals to the second hash code, the data is indicated to be valid, and in the other cases the data is indicated to be invalid.