| Presentation | 2003/7/11 A privacy-enhanced efficient group signature scheme Kozue UMEDA, Atsuko MIYAJI, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The concept of group signature allows a group member to sign messages anonymously on behalf of the group. A group signature has a feature of Tracing, that is, the identity of a signer can be revealed by a designated entity in case of dispute. A number of group signature schemes have been proposed to-date and most of these used a membership certificate. In the certificate-based group signature scheme, it is necessary to revoke the revoked member's certificate. Ateniese and Tsudik [3] proposed Certificate Revocation List(CRL)-based revocation scheme, that is, in order to revoke a member from the group, a group manager adds commitment of revoked member's certificate to a CRL, and a signer attaches a commitment of his/her membership certificate. In the verification, a verifier checks whether or not the CRL includes the commitment of signer's membership certificate. In the previous group signature scheme [12], a group manager knows each member's membership certificate and he can compute a commitment of a member's certificate. Therefore, he can reveal the signer's identity even if he does not run the Tracing protocol and thus the CRL-based revocation scheme does not realize the feature of anonymity to the group manager. In this paper, we propose a privacy enhanced group signature scheme which realizes the feature of anonymity to the group manager. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Group signature / Revocation / Anonymity |
| Paper # | ISEC2003-30 |
| Date of Issue |
| Conference Information | |
| Committee | ISEC |
|---|---|
| Conference Date | 2003/7/11(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Information Security (ISEC) |
|---|---|
| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A privacy-enhanced efficient group signature scheme |
| Sub Title (in English) | |
| Keyword(1) | Group signature |
| Keyword(2) | Revocation |
| Keyword(3) | Anonymity |
| 1st Author's Name | Kozue UMEDA |
| 1st Author's Affiliation | School of Information Science, Japan Advanced Institute of Science and Technology() |
| 2nd Author's Name | Atsuko MIYAJI |
| 2nd Author's Affiliation | School of Information Science, Japan Advanced Institute of Science and Technology |
| Date | 2003/7/11 |
| Paper # | ISEC2003-30 |
| Volume (vol) | vol.103 |
| Number (no) | 196 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |