Abstract

The portability and various functions of mobile devices enable them to go deep into people's study, work and life. While it is convenient for people, mobile devices contain a large number of user’s private information, such as the user's personal property information, identity information and even the confidential information of enterprise etc. Side-channel attack is currently one of the most effective ways to steal private information of cryptographic devices thus the threat to mobile devices can be imagined. In this paper, the electromagnetic side-channel attack based on AES encryption algorithm on mobile device—PCM-9589F Multi-COM Board is studied. A new signal acquisition platform is designed, which solves the problem that the difficulty in locating the side-channel electromagnetic leakage signal of the mobile devices. In addition,using the time-frequency analysis and filter technology,we extract the encryption features of AES on PCM-9589F Multi-COM Board.

Highlights

  • Side-channel attack can make use of the physical leakage information of cryptographic devices that executing the encryption algorithm, which can obtain the specific encryption features of the cryptographic devices and crack the encryption key[1]

  • In this paper,it focuses on the problem that it is difficult to locate in the side-channel leakage signal of the mobile devices, and the signal is disturbed by other internal components of the system so that the encryption features cannot be extracted

  • On the basis of the signal extraction methods in traditional side-channel attacks, this paper uses serial port communication technology to build a signal acquisition platform for extracting the side-channel leakage signal of mobile device PCM-9589F Multi-COM Board, which solves the problem of signal extraction of the mobile devices

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Summary

Introduction

Side-channel attack can make use of the physical leakage information of cryptographic devices that executing the encryption algorithm, which can obtain the specific encryption features of the cryptographic devices and crack the encryption key[1]. With the continuous development of mobile devices,people turn their eyes to mobile devices.The internal data protection mechanism of mobile devices only reduces the possibility of data leakage at the logical level. In theory, this protection mechanism cannot resist the threat of side-channel attack effectively. On the basis of traditional electromagnetic side-channel attacks, this paper turns to the mobile device—PCM-9589F Multi-COM Board (Figure 1). In this paper,it focuses on the problem that it is difficult to locate in the side-channel leakage signal of the mobile devices, and the signal is disturbed by other internal components of the system so that the encryption features cannot be extracted

Platform Construction
Analysis of problems
Proposal of experimental scheme
Attacking Experiment
Side-channel leakage signal processing
Filter processing for raw traces
Conclusion
Full Text
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