Electric power calculating apparatus, electric power calculating method, tamper resistance evaluating apparatus, and tamper resistance evaluating method

Abstract

It is a purpose to evaluate a tamper resistance of an actual circuit with a high accuracy and at a high speed in an upstream process of a circuit design. A tamper resistance evaluating apparatus includes a signal change time counter unitfor counting the number of times a signal in a logic circuit changes, a power consumption calculation unitfor calculating a power consumption in the logic circuit based on the number of times a signal changes, which is counted by the signal change time counter unit, a leaked-information analysis unitfor analyzing information leaked from the logic circuit based on the power consumption in the logic circuit calculated by the power consumption calculation unit, a file databasefor storing a file used by a simulator, a simulation control information producing unitfor producing control information for controlling the logic simulator, a time sequence electric power information producing unitfor producing time sequence electric power information, in which the power consumptions calculated by the power consumption calculation unitare arranged in a time sequence, and a result displaying unitfor displaying the time sequence electric power information.