logic circuit for prevention DPA using of Hamming Weight Model, and smart card included it

摘要

PURPOSE: A power analysis attack prevention logic circuit using a Hamming weight model and a smart card including the same are provided to fundamentally prevent power analysis attack. CONSTITUTION: A power analysis attack prevention logic circuit installs a logic circuit(100) and an FET(Field-Effect Transistor) device(210). The logic circuit includes a logic gate(110). The FET device has the same characteristic as the logic gate and is installed in an output end(130) of the logic gate. The power analysis attack prevention logic circuit maintains the total current of the logic circuit constant.