(November 20, 2024 15:00) IMI Crypto Seminar Nov. 20, 2024
Date：November 1, 2024
InformationSee details->Advanced Cryptography IMI HP
| Date & Time | Wednesday, November 20, 2024 15:00 – 16:30 | |
| Place | IMI auditorium, 4F, West 1 zone (W1-D-413) *Hybrid meeting with online (Zoom) participation | |
| Online(Zoom） | https://us06web.zoom.us/j/85467329738?pwd=c7grm02hK3INqoXJbOW1MGOBub8UIW.1 | |
| Meeting ID | 854 6732 9738 | |
| Passcode | 018122 | |
| Speaker (without honorifics) | Kohei Nakagawa (NTT Social Informatics Laboratories) | |
| Title | Digital Signature Scheme Based on 2-dimensional Isogenies | |
| Summary | SQIsign is one of the candidates for NIST’s additional call for quantum-resistant signature schemes. It has attracted attention due to its very short signature and key sizes compared to other candidates. Meanwhile, many new schemes using high-dimensional isogenies have been proposed in recent years. One such scheme, called SQIsignHD, has even shorter signature sizes and lower computational costs for signature generation than SQIsign. However, it requires 4-dimensional isogeny computations for verification, resulting in high verification costs. NIST is seeking signature schemes with short signature sizes and fast verification, making the reduction of SQIsignHD’s verification costs an important issue. Recently, several signature schemes have been proposed that reduce verification costs by using only 2-dimensional isogeny computations. In this presentation, we will introduce several signature schemes using 2-dimensional isogenies, focusing on the scheme proposed by the speaker, and compare their performance. This research is a joint work with Mr. Keishi ONUKI from Tokyo University. | |
| Contact | 縫田 光司（ nuida@imi.kyushu-u.ac.jp ） | |
Please join us!! We are looking forward to seeing you!!