TIME ANALYSIS ATTACK ON A STREAM CIPHER ALGORITHM’S

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MOMENI H.; TAHERI M.A.

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Journal: JOURNAL OF ELECTRONIC AND CYBER DEFENCE Year:2016 | Volume:4 | Issue:1 (13) Page(s): 51-57

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Information Journal Paper

Title

TIME ANALYSIS ATTACK ON A STREAM CIPHER ALGORITHM’S

Author(s)

MOMENI H. | TAHERI M.A. | Issue Writer Certificate

Keywords

STREAM CIPHER ALGORITHMQ1

TIME ANALYSIS ATTACKQ1

CLOCK CONTROL FUNCTIONQ1

COUNTERMEASURESQ1

Abstract

The execution time of a cryptographic algorithm, can act as a useful source of information for an attacker and provide him a large amount of valuable data. In timing analysis attack where is a kind of side channel attacks, the algorithm is applied on different inputs and its execution times is measured. These measurements are fed into a statistical model. This model is able to predict some bits of cryptographic key through calculating correlation and variance of different measurements. In this paper a stream cipher based on words and its vulnerabilities against timing analysis attack are studied. A special function used in controlling LFSRs clock signal has made the attack possible. This function not only leaks information about number of clock periods, but also reveals some bits of LFSRs in each clock period. As a counter measure against timing analysis attack, we modified the aforementioned function. The modified algorithm is more than 26% faster in key generation.

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APA: Copy

MOMENI, H., & TAHERI, M.A.. (2016). TIME ANALYSIS ATTACK ON A STREAM CIPHER ALGORITHM’S. JOURNAL OF ELECTRONIC AND CYBER DEFENCE, 4(1 (13)), 51-57. SID. https://sid.ir/paper/243236/en

Vancouver: Copy

MOMENI H., TAHERI M.A.. TIME ANALYSIS ATTACK ON A STREAM CIPHER ALGORITHM’S. JOURNAL OF ELECTRONIC AND CYBER DEFENCE[Internet]. 2016;4(1 (13)):51-57. Available from: https://sid.ir/paper/243236/en

IEEE: Copy

H. MOMENI, and M.A. TAHERI, “TIME ANALYSIS ATTACK ON A STREAM CIPHER ALGORITHM’S,” JOURNAL OF ELECTRONIC AND CYBER DEFENCE, vol. 4, no. 1 (13), pp. 51–57, 2016, [Online]. Available: https://sid.ir/paper/243236/en

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