| Presentation | 2014-07-04 Cryptanalysis of a matrix variant of NTRU Takanori YASUDA, Yuya YAMAGUCHI, Xavier DAHAN, Kouichi SAKURAI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Since its introduction in 1996, the cryptosystem NTRU has become a well-established candidate for the next generation public-key cryptography. Several generalizations, or variations of NTRU have been proposed mainly consisting in changing the ring of truncated polynomials whereby encryption/decryption are done. Considering for example the ring of matrices have appealing features, since the non-commutativity can complicate further the task of recovering a ciphertext. We consider in this paper the cryptanalysis of "matrixNTRU", a natural matrix variant proposed a few years ago. A major weakness is indeed that the lattice underlying the system is significantly smaller than expected. We finally propose a modification that prevents this weakness. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Public-key cryptography / Lattice-based cryptography / Post-quantum cryptography / NTRU |
| Paper # | ISEC2014-33,SITE2014-28,ICSS2014-37,EMM2014-33 |
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| Conference Information | |
| Committee | ICSS |
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| Conference Date | 2014/6/26(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Information and Communication System Security (ICSS) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Cryptanalysis of a matrix variant of NTRU |
| Sub Title (in English) | |
| Keyword(1) | Public-key cryptography |
| Keyword(2) | Lattice-based cryptography |
| Keyword(3) | Post-quantum cryptography |
| Keyword(4) | NTRU |
| 1st Author's Name | Takanori YASUDA |
| 1st Author's Affiliation | Institute of Systems, Information Technologies and Nanotechnologies() |
| 2nd Author's Name | Yuya YAMAGUCHI |
| 2nd Author's Affiliation | Faculty of Mathematics, Kyushu University |
| 3rd Author's Name | Xavier DAHAN |
| 3rd Author's Affiliation | Institute of Systems, Information Technologies and Nanotechnologies |
| 4th Author's Name | Kouichi SAKURAI |
| 4th Author's Affiliation | Faculty of Information Science and Electrical Engineering, Kyushu University:Institute of Systems, Information Technologies and Nanotechnologies |
| Date | 2014-07-04 |
| Paper # | ISEC2014-33,SITE2014-28,ICSS2014-37,EMM2014-33 |
| Volume (vol) | vol.114 |
| Number (no) | 117 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |