Security Analysis of the Masking-Shuffling Based Side Channel Attack Countermeasures

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Provided by: Kookmin University
Topic: Security
Format: PDF
Side Channel Attacks are known to be effective in cracking secret keys utilized in smart cards, electronic passports, and e-ID cards. In this paper, the authors suggest a new practical method called a Biasing Power Analysis (BPA) to find a secret key used in an AES based on a masking-shuffling method without the use of the time position and template information of the masking value. They conducted an experiment on a BPA attack against a 128-bit AES secret key based on a masking-shuffling method operating on an MSP430 chip and succeeded in finding the entire secret key. The results of this paper can be utilized for next-generation ID cards to verify their physical safety.
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