| Presentation | 2020-03-10 Improved Threshold Signature with Anonymity Takuya Inomoto, Atsuko Miyaji, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Today, we can exchange information at remote locations via the Internet. It is very important to distinguish whether or not the information was sent by the correct sender and forged. Digital signature is a useful tool for ensuring the authenticity of message origins. Multi-signature is used when information is circulated and needed to be attested by multiple people. Threshold signature is one type of multi-signatures, which divides the signature information and distributes them to multiple people. By setting the lower limit of the number of people to recover the signature, there is an advantage that fewer people than the lower limit cannot generate a signature. In addition, threshold signature has the feature of concealing who signed. Such as the gain in power of cryptocurrencies, the demand for threshold signature is high. On the other hand, it has drawbacks such as difficulty in adapting to a group with order . Therefore, I propose some method to improve these drawbacks. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Digital signature / threshold signature / order relation |
| Paper # | IT2019-97,ISEC2019-93,WBS2019-46 |
| Date of Issue | 2020-03-03 (IT, ISEC, WBS) |
| Conference Information | |
| Committee | ISEC / IT / WBS |
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| Conference Date | 2020/3/10(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | University of Hyogo |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | joint meeting of IT, ISEC, and WBS |
| Chair | Shiho Moriai(NICT) / Jun Muramatsu(NTT) / Minoru Okada(NAIST) |
| Vice Chair | Shoichi Hirose(Univ. of Fukui) / Tetsuya Izu(Fujitsu Labs.) / Tadashi Wadayama(Nagoya Inst. of Tech.) / Koji Ohuchi(Shizuoka Univ.) / Kenichi Takizawa(NICT) |
| Secretary | Shoichi Hirose(NICT) / Tetsuya Izu(Tsukuba Univ.) / Tadashi Wadayama(Saga Univ.) / Koji Ohuchi(Nagano Pref Inst. of Tech.) / Kenichi Takizawa(Kanagawa Univ.) |
| Assistant | Dai Yamamoto(Fujitsu Labs.) / Yuuji Suga(IIJ) / Hideki Yagi(UEC) / Duong Quang Thang(NAIST) / Masafumi Moriyama(NICT) |
| Paper Information | |
| Registration To | Technical Committee on Information Security / Technical Committee on Information Theory / 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) | Improved Threshold Signature with Anonymity |
| Sub Title (in English) | |
| Keyword(1) | Digital signature |
| Keyword(2) | threshold signature |
| Keyword(3) | order relation |
| 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(Osaka Univ.) |
| Date | 2020-03-10 |
| Paper # | IT2019-97,ISEC2019-93,WBS2019-46 |
| Volume (vol) | vol.119 |
| Number (no) | IT-473,ISEC-474,WBS-475 |
| Page | pp.pp.51-58(IT), pp.51-58(ISEC), pp.51-58(WBS), |
| #Pages | 8 |
| Date of Issue | 2020-03-03 (IT, ISEC, WBS) |