2017 Fiscal Year Final Research Report
General Secret Sharing Schemes with Restriction on Information Rates for Specified Participants
| Project/Area Number |
15K00192
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Information security
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| Research Institution | Nihon University |
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Principal Investigator |
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| Project Period (FY) |
2015-10-21 – 2018-03-31
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| Keywords | 秘密分散 / しきい値法 / アクセス構造 |
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| Outline of Final Research Achievements |
We have proposed a new secret sharing scheme realizing general access structures. The proposed scheme can reduce the number of shares distributed to one specified participant. We can apply the proposed scheme to the same access structure recursively. That is, the proposed scheme can reduce the number of shares distributed to another participant once again by applying the proposed scheme recursively.
Next, we have proposed new secret sharing schemes realizing general access structures. This scheme can reduce the number of shares distributed to specified participants. Thus, we can reduce the number of shares distributed to any participant who belongs to the selected subset.
Furthermore, we have proposed a new secret sharing scheme realizing general access structures. In the proposed scheme, shares are generated by Tassa's hierarchical threshold scheme instead of Shamir's threshold scheme. Thus, the proposed scheme can reduce the number of shares distributed to each participant.
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| Free Research Field |
情報セキュリティ
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