Crypto-Math CREST




Project Title

Study of physical attack model against post-quantum cryptography

Outline of Research

We will proceed with research on cryptographic security evaluation in the real-world environment. First, we evaluate the security against modern cryptography when using a quantum computer that is not ideal. In particular, we propose a circuit construction that solves the prime factorization and the discrete logarithm problem when there is a quantum error, and the number of qubits is limited. Furthermore, we evaluate the security of post-quantum cryptography, including lattice-based cryptography under attacks based on side-channel information. In particular, many tricks in the implementation are taken to speed up the decryption/signature, but its security is not always clear. We will investigate its resistance to side-channel attacks.

Noboru KunihiroProfessor

Faculty of Engineering, Information and Systems, University of Tsukuba

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Naoyuki ShinoharaDirector

National Institute of Information and Communications Technology


Koji NuidaProfessor

Institute of Mathematics for Industry, Kyushu University

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Atsushi TakayasuAssociate Professor

Graduate School of Information Science and Technology, University of Tokyo

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Shuhei NakamuraAssistant Professor

Graduate School of Science and Engineering, Ibaraki University

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Shoichi KamadaResearcher

Faculty of Engineering, Information and Systems, University of Tsukuba


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