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Cryptanalysis using Fault Injection and Countermeasures on DSA

오류주입을 이용한 DSA 서명 알고리즘 공격 및 대응책

  • Received : 2010.07.02
  • Accepted : 2010.08.10
  • Published : 2010.08.31

Abstract

The international standard signature algorithm DSA has been guaranteed its security based on discrete logarithm problem. Recently, the DSA was known to be vulnerable to some fault analysis attacks in which the secret key stored inside of the device can be extracted by occurring some faults when the device performs signature algorithm. After analyzing an existing fault attack presented by Bao et al., this paper proposed a new fault analysis attack by disturbing the random number. Furthermore, we presented a countermeasure to compute DSA signature that has its immunity in the two types of fault attacks. The security and efficiency of the proposed countermeasure were verified by computer simulations.

Keywords

Digital Signature Algorithm(DSA);Fault Injection Analysis;Cryptographic Device

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