Security Reconsideration on CRT-RSA Algorithm Against Fault Attacks using Opcode Modification

Vol. 20, No. 4, pp. 155-160, Aug. 2010
10.13089/JKIISC.2010.20.4.155, Full Text:
Keywords: CRT-RSA, Fault Attack, Opcode modification, Multi-precision operation
Abstract

Since the RSA cryptosystem based on Chinese Remainder Theorem is vulnerable to many fault insertion attacks, some countermeasures against them were proposed. Recently, Kim et al. or Ha et al. respectively proposed each countermeasure scheme based on fault propagation method. Unfortunately, Hur et al. insist that these countermeasures are vulnerable to their opcode modification fault attack. In this paper, we show that the proposed attack can not apply to almost CRT-RSA countermeasures which use multi-precision operations in long bit computation. Therefore, the countermeasure against fault attack proposed by Kim et al. or Ha et al. are still secure.

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Cite this article
[IEEE Style]
J. Ha, Y. Baek, J. Park, S. Moon, "Security Reconsideration on CRT-RSA Algorithm Against Fault Attacks using Opcode Modification," Journal of The Korea Institute of Information Security and Cryptology, vol. 20, no. 4, pp. 155-160, 2010. DOI: 10.13089/JKIISC.2010.20.4.155.

[ACM Style]
Jae-Cheol Ha, Yi-Roo Baek, Jea-Hoon Park, and Sang-Jae Moon. 2010. Security Reconsideration on CRT-RSA Algorithm Against Fault Attacks using Opcode Modification. Journal of The Korea Institute of Information Security and Cryptology, 20, 4, (2010), 155-160. DOI: 10.13089/JKIISC.2010.20.4.155.