CRYPTOGRAPHIC PROCESSING APPARATUS FOR HIGH LEVEL SECURITY, CRYPTOGRAPHIC PROCESSING METHOD AND COMPUTER PROGRAM

摘要

PURPOSE: A cryptographic processing apparatus, a cryptographic processing method and a computer program are provided to generate a modulation clock signal according to a signal based on random number and to determine a data processing timing according to the modulation clock signal. CONSTITUTION: A cryptographic processing apparatus includes a modulation clock signal generator(530) and a data processor(501). The modulation clock signal generator generates a modulation clock signal to be used as a data processing timing control signal. The data processor receives the modulation clock signal and determines a process timing according to the input modulation clock signal to execute data processing. The modulation clock signal generator generates the modulation clock signal corresponding to a random number signal based on a random number and outputs the modulation clock signal to the data processor.