| Presentation | 2006-07-21 Key-Management Scheme for Secure Multicast based on Network Topology Kazuhide FUKUSHIMA, Shinsaku KIYOMOTO, Toshiaki TANAKA, Kouichi SAKURAI, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Pay-multicasting services are expected to be a main service for mobile devices and personal computers in near future, and copyright protection is a major issue for the services. The encryption of digital content is one solution to prevent illegal copying and generate income from clients. Thus, we proposed τ-key-management scheme which provides flexible lock management according to the capacity of a client was proposed. However, this scheme uses a logical key-management structure, and does not consider a network topology. Some key-management systems for multicast systems have been proposed [1]～[3]. However, these schemes use simple key-management structure, and sufficient examinations for optimization of them have not been carried out. Then, we proposed the τ-key-management scheme which provides system which provides flexible key-management based on computational capacities of clients [4]. Additionally, a key-management scheme based on a network topology is required for further optimization. This paper proposed a key-management suited to a multicast system Then, we show the quantitative computational cost and storage cost on key-management routers using five elements; that is the total number of clients, the average service usage time, the duration of keys update, the degree of key-management tree, and the maximum number of clients in a group. Finally, we discuss optimization of our scheme. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Multicast Encryption / Key Management / Group Communication / Content Distribution |
| Paper # | ISEC2006-57 |
| Date of Issue |
| Conference Information | |
| Committee | ISEC |
|---|---|
| Conference Date | 2006/7/14(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) | Key-Management Scheme for Secure Multicast based on Network Topology |
| Sub Title (in English) | |
| Keyword(1) | Multicast Encryption |
| Keyword(2) | Key Management |
| Keyword(3) | Group Communication |
| Keyword(4) | Content Distribution |
| 1st Author's Name | Kazuhide FUKUSHIMA |
| 1st Author's Affiliation | KDDI R&D Laboratories Inc.() |
| 2nd Author's Name | Shinsaku KIYOMOTO |
| 2nd Author's Affiliation | KDDI R&D Laboratories Inc. |
| 3rd Author's Name | Toshiaki TANAKA |
| 3rd Author's Affiliation | KDDI R&D Laboratories Inc. |
| 4th Author's Name | Kouichi SAKURAI |
| 4th Author's Affiliation | Faculty of Information Science and Electrical Engineering, Kyushu University |
| Date | 2006-07-21 |
| Paper # | ISEC2006-57 |
| Volume (vol) | vol.106 |
| Number (no) | 176 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |