Design and Implementation for DPA Protection in Smart Card

With a view to the fact that information security of smart card is attacked effectively by Differential Power Analysis(DPA),some elevated design in smart card circuit hardware on anti-DPA attack are designed.The DPA attack primary principle is analysed,and taking this attack trait into account,some ameliorations are made on smart card Random Number Generator(RNG) through appending random consume circuit,combinational logic and sequential logic circuits are mended by system neutral parameter setting and appending complementary structure register respectively.The outcome indicate that this design can protect smart card reliably from DPA attack when compared with the simple method of ameliorating arithmetic logic unit.