Solution of Cryptographic Circuit Based on Transistor Level against DPA Attacks

The hardware implementation of cryptographic algorithms may leak many side-channel information,as power consumption etc. The Difference Power Analysis (DPA) is the most efficient side-channel attack by analysis power consumption. Some algorithmic countermeasures have been proposed,but most of them rely on the modification at the algorithm level. This paper propose a novel method against DPA,by adding an transistor level circuit to control power consumption,without any algorithmic modification.,making a DPA attack a very difficult task.