| Presentation | 2017-05-12 [Invited Talk] How to Obtain Fully Structure-Preserving (Automorphic) Signatures from Structure-Preserving Ones Yuyu Wang, Zongyang Zhang, Takahiro Matsuda, Goichiro Hanaoka, Keisuke Tanaka, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we bridge the gap between structure-preserving signatures (SPSs) and fully structure-preserving signatures (FSPSs). In SPSs, all the messages, signatures, and verification keys consist only of group elements, while in FSPSs, even signing keys are required to be a collection of group elements. To achieve our goal, we introduce two new primitives called trapdoor signature and signature with auxiliary key, both of which can be derived from SPSs. By carefully combining both primitives, we obtain generic constructions of FSPSs from SPSs. Upon instantiating the above two primitives, we get many instantiations of FSPS with unilateral and bilateral message spaces. Different from previously proposed FSPSs, many of our instantiations also have the automorphic property, i.e., a signer can sign his own verification key. As by-product results, one of our instantiations has the shortest verification key size, signature size, and lowest verification cost among all previous constructions based on standard assumptions, and one of them is the first FSPS scheme in the type I bilinear group. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | signaturetrapdoor signaturefully structure-preservingautomorphic |
| Paper # | ISEC2017-12 |
| Date of Issue | 2017-05-05 (ISEC) |
| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2017/5/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Masahiro Mambo(Kanazawa Univ.) |
| Vice Chair | Kazuto Ogawa(NHK) / Atsushi Fujioka(Kanagawa Univ.) |
| Secretary | Kazuto Ogawa(Toshiba) / Atsushi Fujioka(Tohoku Univ.) |
| Assistant | Toshihiro Ohigashi(Tokai Univ.) / Yuuji Suga(IIJ) / Atsuo Inomata(Tokyo Denki Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Information Security |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Invited Talk] How to Obtain Fully Structure-Preserving (Automorphic) Signatures from Structure-Preserving Ones |
| Sub Title (in English) | |
| Keyword(1) | signaturetrapdoor signaturefully structure-preservingautomorphic |
| 1st Author's Name | Yuyu Wang |
| 1st Author's Affiliation | Tokyo Institute of Technology/National Institute of Advanced Industrial Science and Technology(Tokyo Tech/AIST) |
| 2nd Author's Name | Zongyang Zhang |
| 2nd Author's Affiliation | Beihang University(Beihang University) |
| 3rd Author's Name | Takahiro Matsuda |
| 3rd Author's Affiliation | National Institute of Advanced Industrial Science and Technology(AIST) |
| 4th Author's Name | Goichiro Hanaoka |
| 4th Author's Affiliation | National Institute of Advanced Industrial Science and Technology(AIST) |
| 5th Author's Name | Keisuke Tanaka |
| 5th Author's Affiliation | Tokyo Institute of Technology/AIST(Tokyo Tech) |
| Date | 2017-05-12 |
| Paper # | ISEC2017-12 |
| Volume (vol) | vol.117 |
| Number (no) | ISEC-25 |
| Page | pp.pp.63-63(ISEC), |
| #Pages | 1 |
| Date of Issue | 2017-05-05 (ISEC) |