Algebraic analysis of a rabin-like cryptosystem and its countermeasures

Objective: In this paper, we present two algebraic analyses upon a new Rabin-like public key cryptosystem namely the Rabin-p cryptosystem. Methods/Analysis: We show that by using the continued fraction’s method and the Coppersmith’s theorems, there exists inappropriate parameter’s size that can affe...

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Main Authors: Asbullah, Muhammad Asyraf, Kamel Ariffin, Muhammad Rezal
Format: Article
Language:English
Published: Indian Society for Education and Environment 2017
Online Access:http://psasir.upm.edu.my/id/eprint/60794/1/Algebraic%20analysis%20of%20a%20rabin-like%20cryptosystem%20and%20its%20countermeasures.pdf
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author Asbullah, Muhammad Asyraf
Kamel Ariffin, Muhammad Rezal
author_facet Asbullah, Muhammad Asyraf
Kamel Ariffin, Muhammad Rezal
author_sort Asbullah, Muhammad Asyraf
collection UPM
description Objective: In this paper, we present two algebraic analyses upon a new Rabin-like public key cryptosystem namely the Rabin-p cryptosystem. Methods/Analysis: We show that by using the continued fraction’s method and the Coppersmith’s theorems, there exists inappropriate parameter’s size that can affect the security of Rabin-p cryptosystem. Findings: The first analysis proved that the prime factors of its public key can be found amongst the list of the continued fraction expansion of the ciphertext c and the modulus N=p2q in polynomial time. For the second analysis, by using the Coppersmith’s theorems we showed that the message m can be retrieved in polynomial time provided some condition on the message length. We also propose a countermeasure to avoid both analyses. Novelty/Improvement: The purpose of this work is to offer suggestions for a countermeasure for the aforementioned analysis upon implementing the Rabin-p cryptosystem. Hence, all the parameters should be chosen carefully.
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spelling upm.eprints-607942019-03-27T02:42:23Z http://psasir.upm.edu.my/id/eprint/60794/ Algebraic analysis of a rabin-like cryptosystem and its countermeasures Asbullah, Muhammad Asyraf Kamel Ariffin, Muhammad Rezal Objective: In this paper, we present two algebraic analyses upon a new Rabin-like public key cryptosystem namely the Rabin-p cryptosystem. Methods/Analysis: We show that by using the continued fraction’s method and the Coppersmith’s theorems, there exists inappropriate parameter’s size that can affect the security of Rabin-p cryptosystem. Findings: The first analysis proved that the prime factors of its public key can be found amongst the list of the continued fraction expansion of the ciphertext c and the modulus N=p2q in polynomial time. For the second analysis, by using the Coppersmith’s theorems we showed that the message m can be retrieved in polynomial time provided some condition on the message length. We also propose a countermeasure to avoid both analyses. Novelty/Improvement: The purpose of this work is to offer suggestions for a countermeasure for the aforementioned analysis upon implementing the Rabin-p cryptosystem. Hence, all the parameters should be chosen carefully. Indian Society for Education and Environment 2017 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/60794/1/Algebraic%20analysis%20of%20a%20rabin-like%20cryptosystem%20and%20its%20countermeasures.pdf Asbullah, Muhammad Asyraf and Kamel Ariffin, Muhammad Rezal (2017) Algebraic analysis of a rabin-like cryptosystem and its countermeasures. Indian Journal of Science and Technology, 10 (1). pp. 1-6. ISSN 0974-6846; ESSN: 0974-5645 10.17485/ijst/2017/v10i1/109314
spellingShingle Asbullah, Muhammad Asyraf
Kamel Ariffin, Muhammad Rezal
Algebraic analysis of a rabin-like cryptosystem and its countermeasures
title Algebraic analysis of a rabin-like cryptosystem and its countermeasures
title_full Algebraic analysis of a rabin-like cryptosystem and its countermeasures
title_fullStr Algebraic analysis of a rabin-like cryptosystem and its countermeasures
title_full_unstemmed Algebraic analysis of a rabin-like cryptosystem and its countermeasures
title_short Algebraic analysis of a rabin-like cryptosystem and its countermeasures
title_sort algebraic analysis of a rabin like cryptosystem and its countermeasures
url http://psasir.upm.edu.my/id/eprint/60794/1/Algebraic%20analysis%20of%20a%20rabin-like%20cryptosystem%20and%20its%20countermeasures.pdf
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