| Presentation | 2021-03-02 Proposal for Chameleon Hash with a Revocation Function Koki Matsubara, Atsuko Miyaji, Tian Yangguang, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The data registered on the blockchain cannot be changed again, but Policy-based Chameleon Hash (PCH)by Derler et al. (2019) enables the blockchain to be modified.This allows users who satisfy the access policy to rewrite the data. However, PCH has a feature that even a user who has lost the access privileges can modify the blockchain using the key he or she has. In this paper, we propose Revocable Policy-based Chameleon Hash (R-PCH).The proposed R-PCH provides additional security to existing PCHs by allowing users who have lost their access privileges to revoke them. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Chameleon Hash / revocation / blockchain |
| Paper # | ICSS2020-42 |
| Date of Issue | 2021-02-22 (ICSS) |
| Conference Information | |
| Committee | ICSS / IPSJ-SPT |
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| Conference Date | 2021/3/1(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Security, Trust, etc. |
| Chair | Hiroki Takakura(NII) |
| Vice Chair | Katsunari Yoshioka(Yokohama National Univ.) / Kazunori Kamiya(NTT) |
| Secretary | Katsunari Yoshioka(NICT) / Kazunori Kamiya(KDDI labs.) |
| Assistant | Keisuke Kito(Mitsubishi Electric) / Toshihiro Yamauchi(Okayama Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Information and Communication System Security / Special Interest Group on Security Psychology and Trust |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Proposal for Chameleon Hash with a Revocation Function |
| Sub Title (in English) | |
| Keyword(1) | Chameleon Hash |
| Keyword(2) | revocation |
| Keyword(3) | blockchain |
| 1st Author's Name | Koki Matsubara |
| 1st Author's Affiliation | Osaka University(Osaka Univ.) |
| 2nd Author's Name | Atsuko Miyaji |
| 2nd Author's Affiliation | Osaka University/JAIST(Osaka Univ./ JAIST) |
| 3rd Author's Name | Tian Yangguang |
| 3rd Author's Affiliation | Osaka University(Osaka Univ.) |
| Date | 2021-03-02 |
| Paper # | ICSS2020-42 |
| Volume (vol) | vol.120 |
| Number (no) | ICSS-384 |
| Page | pp.pp.96-101(ICSS), |
| #Pages | 6 |
| Date of Issue | 2021-02-22 (ICSS) |