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Developing Advanced Cryptanalysis Techniques for Symmetric-key Primitives with Real-world Public-key Applications

Research Project

Project/Area Number 24K20733
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 60010:Theory of informatics-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

リュウ フカン  東京工業大学, 工学院, 助教 (30883178)

Project Period (FY) 2024-04-01 – 2026-03-31
Project Status Granted (Fiscal Year 2024)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2025: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2024: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywordscryptanalysis / algebraic attack / large finite field / symmetric-key primitives / post-quantum security
Outline of Research at the Start

In this research, we aim to develop novel cryptanalysis techniques to understand the security of new symmetric-key primitives designed for advanced public-key techniques like secure multiparty computation (MPC), fully homomorphic encryption (FHE), and zero-knowledge proof systems (ZKP). In particular, we are interested in 1) how to access the security of ciphers using partial nonlinear layers, 2) how to understand the security of randomized symmetric-key primitives, and 3) how to develop new algebraic attacks over large finite fields.

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Published: 2024-04-05   Modified: 2024-06-24  

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