Cryptanalysis of the RSA variant based on cubic Pell equation
Cryptanalysis of the RSA variant based on cubic Pell equation
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基于三次佩尔方程的RSA变体密码分析
DOI:
10.1016/j.tcs.2021.08.001
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发表时间:
2021
影响因子:
1.1
通讯作者:
Yuanzhi Yao
中科院分区:
文献类型:
--
作者:
Mengce Zheng;Noboru Kunihiro;Yuanzhi Yao
Abstract RSA (Rivest-Shamir-Adleman) cryptosystem is the most popular asymmetric key cryptographic algorithm used in computer science and information security. Recently, an RSA-like cryptosystem was proposed using a novel product that arises from a cubic field connected to the cubic Pell equation. The relevant key equation is e d≡ 1 mod (p 2+ p+ 1)(q 2+ q+ 1) with N= p q. This RSA variant is claimed to be robust against the Wiener's attack and hence the bit-size of the private key could be shorter, namely d< N 1/4. In this paper, we explore the further security analysis and investigate the potential small private exponent attack. We show that such RSA variant is particularly vulnerable to the lattice-based method. To be specific, we can carry out the lattice-based small private exponent attack if d< N 2− 2, which is less secure than the standard RSA. Furthermore, we conduct numerical experiments to verify the validity of the proposed attack.
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DOI:
10.1007/978-3-030-21548-4_21
发表时间:
2019-07
期刊:
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影响因子:
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DOI:
10.1007/978-3-662-49387-8_4
发表时间:
2016-03
期刊:
IACR Cryptol. ePrint Arch.
影响因子:
--
作者:
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DOI:
10.1007/11935230_18
发表时间:
2006-12
期刊:
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影响因子:
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