| Presentation | 2005-07-22 A Group Key Management Scheme for Secure Multicast Increasing Efficiency of Key Distribution in Leave Operation Alireza NEMANEYPOUR, Kazuya KUMEKAWA, Toshihiko KATO, Shuichi ITOH, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes an efficient model and the associated algorithm for the group key management in secure multicast. In our model, the group key is built using secret values (secret keys) assigned to individual members. The inverse values of the secret keys are also used for key management. When a new member joins a group, the group key is changed by key server, and the new group key and the inverse value of the new member are sent to members by exploiting IP multicast. When a member leaves, the key server only informs remaining members who is leaving. Then, the group key is changed by each of the remaining members using the inverse values. In this way, we have shifted changing the group key from the server side to users' side. Using this model, we can change the group key efficiently after a leave. In this model, each member of the multicast group needs to keep the inverse values of the other members except its own. In order to reduce the number of the inverse values which each member needs to keep, we use a hierarchical approach for this model. In this approach, the group is divided into some subgroups logically. This paper describes the details of our model and algorithm. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Group Key / Secure Multicast / Communication Overhead / Eavesdropping |
| Paper # | ISEC2005-43 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2005/7/15(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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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) | A Group Key Management Scheme for Secure Multicast Increasing Efficiency of Key Distribution in Leave Operation |
| Sub Title (in English) | |
| Keyword(1) | Group Key |
| Keyword(2) | Secure Multicast |
| Keyword(3) | Communication Overhead |
| Keyword(4) | Eavesdropping |
| 1st Author's Name | Alireza NEMANEYPOUR |
| 1st Author's Affiliation | The University of Electro-Communications, Graduate School of Information Systems() |
| 2nd Author's Name | Kazuya KUMEKAWA |
| 2nd Author's Affiliation | The University of Electro-Communications, Graduate School of Information Systems |
| 3rd Author's Name | Toshihiko KATO |
| 3rd Author's Affiliation | The University of Electro-Communications, Graduate School of Information Systems |
| 4th Author's Name | Shuichi ITOH |
| 4th Author's Affiliation | The University of Electro-Communications, Graduate School of Information Systems |
| Date | 2005-07-22 |
| Paper # | ISEC2005-43 |
| Volume (vol) | vol.105 |
| Number (no) | 194 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |