| Presentation | 2023-07-24 Threshold ring signature based on isogeny Naho Isogai, Takeshi Nakai, Koutarou Suzuki, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | RippleSign is the first $T$-out-of-$N$ threshold ring signature scheme based on isogeny，which has an issue that the signature size is $O(2^T)$. In this paper, we propose a $T$-out-of-$N$ threshold ring signature based on CSIDH, which is a key exchange protocol based on isogeny. Our proposal protocol improves the signature size to $O(Nlog(N))$. Moreover, we prove the unconditionally signer ambiguity and the unforgeability. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Isogeny / CSIDH / SeaSign / Threshold ring signature |
| Paper # | ISEC2023-25,SITE2023-19,BioX2023-28,HWS2023-25,ICSS2023-22,EMM2023-25 |
| Date of Issue | 2023-07-17 (ISEC, SITE, BioX, HWS, ICSS, EMM) |
| Conference Information | |
| Committee | EMM / BioX / ISEC / SITE / ICSS / HWS / IPSJ-CSEC / IPSJ-SPT |
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| Conference Date | 2023/7/24(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido Jichiro Kaikan |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Michiharu Niimi(Kyushu Inst. of Tech.) / hironobu Takano(Toyama Prefectural Univ.) / Goichiro Hanaoka(AIST) / Takushi Otani(Kibi International Univ.) / Daisuke Inoue(NICT) / Daisuke Suzuki(Mitsubishi Electric) |
| Vice Chair | Kotaro Sonoda(Nagasaki Univ.) / Hyunho Kang(NIT, Tokyo) / Norihiro Okui(KDDI Research) / Emiko Sano(Kubota) / Junji Shikata(Yokohama National Univ.) / Shinsaku Kiyomoto(KDDI Research) / Soichiro Morishita(Cyber Agent) / Takeo Tatsumi(Open Univ. of Japan) / Akira Yamada(Kobe Univ.) / Toshihiro Yamauchi(Okayama Univ.) / Yuichi Hayashi(NAIST) / Toru Akishita(Sony Semiconductor Solutions) |
| Secretary | Kotaro Sonoda(Hiroshima City Univ.) / Hyunho Kang(Osaka Inst. of Tech.) / Norihiro Okui(NEC) / Emiko Sano(Gunma Univ) / Junji Shikata(AIST) / Shinsaku Kiyomoto(Toshiba) / Soichiro Morishita(NRI-Secure) / Takeo Tatsumi(Fukuoka Inst. of Tech.) / Akira Yamada(Mitsubishi Electric) / Toshihiro Yamauchi(Univ. of Electro-Comm.) / Yuichi Hayashi(Sony Semiconductor Solutions) / Toru Akishita(AIST) |
| Assistant | Naofumi Aoki(Hokkaido Univ.) / Kazuaki Nakamura(Tokyo Univ. of Science) / Tomokazu Kawahara(Toshiba) / Shinichi Shirakawa(Yokohama National Univ.) / Hiroki Okada(KDDI Research) / Yusuke Kaneko(Japan Research Institute) / Yo Kanemoto(NTT) / Masaya Sato(Okayama Prefectural Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Enriched MultiMedia / Technical Committee on Biometrics / Technical Committee on Information Security / Technical Committee on Social Implications of Technology and Information Ethics / Technical Committee on Information and Communication System Security / Technical Committee on Hardware Security / Special Interest Group on Computer Security / Special Interest Group on Security Psychology and Trust |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Threshold ring signature based on isogeny |
| Sub Title (in English) | |
| Keyword(1) | Isogeny |
| Keyword(2) | CSIDH |
| Keyword(3) | SeaSign |
| Keyword(4) | Threshold ring signature |
| 1st Author's Name | Naho Isogai |
| 1st Author's Affiliation | Toyohashi University of Technology(TUT) |
| 2nd Author's Name | Takeshi Nakai |
| 2nd Author's Affiliation | Toyohashi University of Technology(TUT) |
| 3rd Author's Name | Koutarou Suzuki |
| 3rd Author's Affiliation | Toyohashi University of Technology(TUT) |
| Date | 2023-07-24 |
| Paper # | ISEC2023-25,SITE2023-19,BioX2023-28,HWS2023-25,ICSS2023-22,EMM2023-25 |
| Volume (vol) | vol.123 |
| Number (no) | ISEC-129,SITE-130,BioX-131,HWS-132,ICSS-133,EMM-134 |
| Page | pp.pp.72-79(ISEC), pp.72-79(SITE), pp.72-79(BioX), pp.72-79(HWS), pp.72-79(ICSS), pp.72-79(EMM), |
| #Pages | 8 |
| Date of Issue | 2023-07-17 (ISEC, SITE, BioX, HWS, ICSS, EMM) |