A DPA Attack against Asymmetric Encryption: RSA Attacks and Countermeasures
Lesky D. S. Anatias · 2008
This paper discusses side-channel attacks based on Power Analysis. This approach utilizes physical side effects of using cryptographic functions in the real world. A side channel is a source of information that is inherent to a physical implementation of cryptographic functions. Research done in the last half of the 1990s has shown that the information transmitted by side channels, such as execution time, computational faults and power consumption, can be disadvantageous to the security of cryptosystem like RSA or AES. This paper surveys the techniques of Differential Power Analysis presented in [1] and [2] and shows how side channel information can be used to break implementations of RSA public key cryptosystem. Possible defenses against this type of side channel attacks are also discussed.