An r-Hiding Revocable Group Signature Scheme: Group Signatures with the Property of Hiding the Number of Revoked Users
If there are many displaced workers in a company, then a person who goes for job hunting might not select this company. That is, the number of members who quit is quite negative information. Similarly, in revocable group signature schemes, if one knows (or guesses) the number of revoked users (say r...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Journal of Applied Mathematics |
| Online Access: | http://dx.doi.org/10.1155/2014/983040 |
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| author | Keita Emura Atsuko Miyaji Kazumasa Omote |
| author_facet | Keita Emura Atsuko Miyaji Kazumasa Omote |
| author_sort | Keita Emura |
| collection | DOAJ |
| description | If there are many displaced workers in a company, then a person who goes for job hunting might not select this company. That is, the number of members who quit is quite negative information. Similarly, in revocable group signature schemes, if one knows (or guesses) the number of revoked users (say r), then one may guess the reason behind such circumstances, and it may lead to harmful rumors. However, no previous revocation procedure can achieve hiding r. In this paper, we propose the first revocable group signature scheme, where r is kept hidden, which we call r-hiding revocable group signature. To handle this property, we newly define the security notion called anonymity with respect to the revocation which guarantees the unlinkability of revoked users. |
| format | Article |
| id | doaj-art-8ede6cf47fd44d3689ae53c932e96fb8 |
| institution | Kabale University |
| issn | 1110-757X 1687-0042 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Applied Mathematics |
| spelling | doaj-art-8ede6cf47fd44d3689ae53c932e96fb82025-02-03T01:23:04ZengWileyJournal of Applied Mathematics1110-757X1687-00422014-01-01201410.1155/2014/983040983040An r-Hiding Revocable Group Signature Scheme: Group Signatures with the Property of Hiding the Number of Revoked UsersKeita Emura0Atsuko Miyaji1Kazumasa Omote2National Institute of Information and Communications Technology (NICT), 4-2-1 Nukui-Kitamachi, Koganei, Tokyo 184-8795, JapanJapan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, JapanJapan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, JapanIf there are many displaced workers in a company, then a person who goes for job hunting might not select this company. That is, the number of members who quit is quite negative information. Similarly, in revocable group signature schemes, if one knows (or guesses) the number of revoked users (say r), then one may guess the reason behind such circumstances, and it may lead to harmful rumors. However, no previous revocation procedure can achieve hiding r. In this paper, we propose the first revocable group signature scheme, where r is kept hidden, which we call r-hiding revocable group signature. To handle this property, we newly define the security notion called anonymity with respect to the revocation which guarantees the unlinkability of revoked users.http://dx.doi.org/10.1155/2014/983040 |
| spellingShingle | Keita Emura Atsuko Miyaji Kazumasa Omote An r-Hiding Revocable Group Signature Scheme: Group Signatures with the Property of Hiding the Number of Revoked Users Journal of Applied Mathematics |
| title | An r-Hiding Revocable Group Signature Scheme: Group Signatures with the Property of Hiding the Number of Revoked Users |
| title_full | An r-Hiding Revocable Group Signature Scheme: Group Signatures with the Property of Hiding the Number of Revoked Users |
| title_fullStr | An r-Hiding Revocable Group Signature Scheme: Group Signatures with the Property of Hiding the Number of Revoked Users |
| title_full_unstemmed | An r-Hiding Revocable Group Signature Scheme: Group Signatures with the Property of Hiding the Number of Revoked Users |
| title_short | An r-Hiding Revocable Group Signature Scheme: Group Signatures with the Property of Hiding the Number of Revoked Users |
| title_sort | r hiding revocable group signature scheme group signatures with the property of hiding the number of revoked users |
| url | http://dx.doi.org/10.1155/2014/983040 |
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