Two kinds of correlation analysis method attack on implementations of Advanced Encryption Standard software running inside STC89C52 microprocessor

With the development of IC technology, many electronic devices are used the encryption module which is implemented by embedded system to protect sensitive data to ensure communication security. In this paper, we focus on using differential power attack (DPA) of the two kinds of correlation analysis methods to attack Advanced Encryption Standard (AES) encryption algorithm achieved by STC89C52 microprocessor. The two correlation analysis methods are Mean difference method and Pearson correlation coefficient method. Through test and analysis, both of these two method can crack the correct key, the difference is those two kinds of methods to analyze the data of different time.