| Presentation | 2022-03-10 Threshold Signature Scheme Suitable for a Short Message Takuya Inomoto, Atsuko Miyaji, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A threshold signature is a digital signature that is used for information generated by multiple people. In threshold signatures, a signature can be generated only when the number of people who agree to generate the signature exceeds a predetermined threshold. Therefore, even if less than the threshold number of people agree to forge a signature, the signature cannot be forged, which makes it more attack-resistant than a single signature. Digital signatures are classified into two types: message-attachment type for long messages and message-recovery type for short messages. In the message-attached type, the signature and the original data are required for verification. On the other hand, in message recovery type, the data can be verified with only the signature. Most of the existing threshold signatures focus on message-attached signatures. However, since the signature length does not depend on the message length, the real transmission volume (signature length + message length) becomes large when the message is short. In this paper, we propose a message recovery threshold signature, which is suitable for short messages and does not require a message to be sent with the signature. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Digital Signature / Threshold Signature / Message Recovery |
| Paper # | IT2021-90,ISEC2021-55,WBS2021-58,RCC2021-65 |
| Date of Issue | 2022-03-03 (IT, ISEC, WBS, RCC) |
| Conference Information | |
| Committee | IT / ISEC / RCC / WBS |
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| Conference Date | 2022/3/10(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Joint Meeting of ISEC, IT, RCC, and WBS |
| Chair | Tadashi Wadayama(Nagoya Inst. of Tech.) / Tetsuya Izu(Fujitsu Labs.) / HUAN-BANG LI(NICT) / Masanori Hamamura(Kochi Univ. of Tech.) |
| Vice Chair | Tetsuya Kojima(Tokyo Kosen) / Noboru Kunihiro(Tsukuba Univ.) / Goichiro Hanaoka(AIST) / Shunichi Azuma(Nagoya Univ.) / Koji Ishii(Kagawa Univ.) / Takashi Shono(INTEL) / Masahiro Fujii(Utsunomiya Univ.) |
| Secretary | Tetsuya Kojima(Saitamai Univ.) / Noboru Kunihiro(Yamaguchi Univ.) / Goichiro Hanaoka(Fujitsu Labs.) / Shunichi Azuma(Ibaraki Univ.) / Koji Ishii(CRIEPI) / Takashi Shono(Osaka Univ.) / Masahiro Fujii(National Defence Academy) |
| Assistant | Masanori Hirotomo(Saga Univ.) / Takahiro Matsuda(AIST) / SHAN LIN(NICT) / Masaki Ogura(Osaka Univ.) / Masayuki Kinoshita(Chiba Univ. of Tech.) / Sun Ran(Ibaraki Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Information Theory / Technical Committee on Information Security / Technical Committee on Reliable Communication and Control / Technical Committee on Wideband System |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Threshold Signature Scheme Suitable for a Short Message |
| Sub Title (in English) | |
| Keyword(1) | Digital Signature |
| Keyword(2) | Threshold Signature |
| Keyword(3) | Message Recovery |
| 1st Author's Name | Takuya Inomoto |
| 1st Author's Affiliation | Osaka University(Osaka Univ.) |
| 2nd Author's Name | Atsuko Miyaji |
| 2nd Author's Affiliation | Osaka University/Japan Advanced Institute of Science and Technology(Osaka Univ./JAIST) |
| Date | 2022-03-10 |
| Paper # | IT2021-90,ISEC2021-55,WBS2021-58,RCC2021-65 |
| Volume (vol) | vol.121 |
| Number (no) | IT-428,ISEC-429,WBS-430,RCC-431 |
| Page | pp.pp.42-49(IT), pp.42-49(ISEC), pp.42-49(WBS), pp.42-49(RCC), |
| #Pages | 8 |
| Date of Issue | 2022-03-03 (IT, ISEC, WBS, RCC) |