Differential Power Analysis Of AES And Anti-DPA Techniques

Since the introduction of the so-called Side Channel Attack, which makes use of the information leaked through encryption process, such as power consumption, timing and electromagnetic radiation, solely updating encryption algorithm and protocol is not enough to provide security for encryption system. Thus presently in encryption chips design, special protection against Side Channel Attack should be considered.In this thesis, AES(Advanced Encryption Standard)was chosen to be the encryption algorithm for the study of DPA(Differential Power Analysis), which is one type of Side Channel Attack. The main target of this thesis is to study how to carry DPA out and how to protect encryption systems against it.After description of the basic knowledge of AES and SCA, the theory and implementation of DPA are introduced. Then historial studies of the anti-DPA methods are discussed and an improved detailed design is given. Finally the testing and measurement environment is given and the experiment result is analyzed. The experiment result shows that the chip design of this thesis can provide a relatively good protection against DPA for encryption chips using AES algorithm.