| Presentation | 2012-09-21 [Invited Talk] Group to Group Commitments Do Not Shrink Miyako OHKUBO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This talk introduces the results in the paper presented in Eurocrypt 2012 under the same title.A Structure-Preserving Commitment (SPC) scheme is a commitment scheme whose messages, keys, commitments, and decommitments are elements of bilinear groups, and whose openings are verified by evaluating paring product equations. Typical commitment schemes yield short commitments whose size is independent of the size of the input message. The paper shows that SPC can never provide such a preferable property. Thus any SPC must expand the input message into a commitment. The paper then proposes some efficient SPC schemes that are optimal in the sense that their expansion ratio is asymptotically close to 1. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Structure-Preserving Commitments |
| Paper # | ISEC2012-49 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2012/9/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
| Secretary | |
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| Paper Information | |
| Registration To | Information Security (ISEC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Invited Talk] Group to Group Commitments Do Not Shrink |
| Sub Title (in English) | |
| Keyword(1) | Structure-Preserving Commitments |
| 1st Author's Name | Miyako OHKUBO |
| 1st Author's Affiliation | National Institute of Information and Communications Technology() |
| Date | 2012-09-21 |
| Paper # | ISEC2012-49 |
| Volume (vol) | vol.112 |
| Number (no) | 211 |
| Page | pp.pp.- |
| #Pages | 33 |
| Date of Issue | |