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Differential Fault Attack on KASUMI Cipher Used in GSM Telephony

Author

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  • Zongyue Wang
  • Xiaoyang Dong
  • Keting Jia
  • Jingyuan Zhao

Abstract

The confidentiality of GSM cellular telephony depends on the security of A5 family of cryptosystems. As an algorithm in this family survived from cryptanalysis, A5/3 is based on the block cipher KASUMI. This paper describes a novel differential fault attack on KAUSMI with a 64-bit key. Taking advantage of some mathematical observations on the FL, FO functions, and key schedule, only one 16-bit word fault is required to recover all information of the 64-bit key. The time complexity is only 2 32 encryptions. We have practically simulated the attack on a PC which takes only a few minutes to recover all the key bits. The simulation also experimentally verifies the correctness and complexity.

Suggested Citation

  • Zongyue Wang & Xiaoyang Dong & Keting Jia & Jingyuan Zhao, 2014. "Differential Fault Attack on KASUMI Cipher Used in GSM Telephony," Mathematical Problems in Engineering, Hindawi, vol. 2014, pages 1-7, June.
    • Handle: RePEc:hin:jnlmpe:251853
    DOI: 10.1155/2014/251853
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