An object of this invention is to provide a power supply apparatus, which realizes a frequency characteristic of an open-loop transfer function having a trap point, and can deal with input fluctuation. A CRT RSA component facilitates modular exponentiation of a received message, and a verification component reconstructs the received message. The vehicle body lateral section has: a first closed-cross-section section formed from the rear wheel housing and the upper stiffener; and a second closed-cross-section section formed from the pillar inner and a pillar stiffener. An elongate operator is located within the extension portion and connected to the cup engaging element.