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- ArticleJanuary 2024
Threshold Fully Homomorphic Encryption Over the Torus
- Yukimasa Sugizaki,
- Hikaru Tsuchida,
- Takuya Hayashi,
- Koji Nuida,
- Akira Nakashima,
- Toshiyuki Isshiki,
- Kengo Mori
AbstractFully homomorphic encryption (FHE) enables arithmetic operations to be performed over plaintext by operations on undecrypted ciphertext. The Chillotti-Gama-Georgieva-Izabachene (CGGI) scheme is a typical FHE scheme, has attracted attention because ...
- ArticleOctober 2020
An Efficient Secure Division Protocol Using Approximate Multi-bit Product and New Constant-Round Building Blocks
AbstractInteger division is one of the most fundamental arithmetic operators and is ubiquitously used. However, the existing division protocols in secure multi-party computation (MPC) are inefficient and very complex, and this has been a barrier to ...
- ArticleOctober 2019
Client-Aided Two-Party Secure Interval Test Protocol
AbstractSecure interval test protocol checks if an integer is within some interval in a privacy-preserving manner. A natural application is geological location hiding, where we can check whether a person is in a certain territory without revealing any ...