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The mersenne low hamming combination search problem can be reduced to an ILP problem

Budroni, Alessandro; Tenti, Andrea
Chapter, Peer reviewed, Journal article
Accepted version
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URI
https://hdl.handle.net/1956/21939
Date
2019
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  • Department of Informatics [541]
Original version
https://doi.org/10.1007/978-3-030-23696-0_3
Abstract
In 2017, Aggarwal, Joux, Prakash, and Santha proposed an innovative NTRU-like public-key cryptosystem that was believed to be quantum resistant, based on Mersenne prime numbers q=2N−1 . After a successful attack designed by Beunardeau, Connolly, Géraud, and Naccache, the authors revised the protocol which was accepted for Round 1 of the Post-Quantum Cryptography Standardization Process organized by NIST. The security of this protocol is based on the assumption that a so-called Mersenne Low Hamming Combination Search Problem (MLHCombSP) is hard to solve. In this work, we present a reduction of MLHCombSP to an instance of Integer Linear Programming (ILP). This opens new research directions that are necessary to be investigated in order to assess the concrete robustness of such cryptosystem. We propose different approaches to perform such reduction. Moreover, we uncover a new family of weak keys, for whose our reduction leads to an attack consisting in solving <N3 ILP problems of dimension 3.
Publisher
Springer
Series
Lecture Notes in Computer Science
Journal
Lecture Notes in Computer Science (LNCS)
Copyright
Copyright 2019 Springer Nature Switzerland AG

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