| Presentation | 2008-04-17 A Hierarchical Encryption Method for JPEG 2000 Coded Images with Sub-Resistance to Collusion Attacks Noriaki HASHIMOTO, Masaaki FUJIYOSHI, Hitoshi KIYA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes an encryption method to enable hierarchical access controls for JPEG 2000 codestreams. The proposed method provides access control to images of various quality levels that may be different from the quality at encoding, though it uses a single codestream and a single managed key (masterkey). Only one key generated from the masterkey is delivered to a user authorized to access a reserved quality image. This method also takes account into attacks that access superiorquality images by users' collusion. Some conventional methods serve the above features, but those keys are much longer than the keys of the proposed method. The proposed method uses the key whose length does not depend on the hierarchy levels of JP2 codestream by introducing sub-resistance to collusion attacks. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Access control / One-way hash function / Scalability / Collusion attack / Internet |
| Paper # | SIP2008-1,IE2008-1 |
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| Conference Information | |
| Committee | SIP |
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| Conference Date | 2008/4/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Signal Processing (SIP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Hierarchical Encryption Method for JPEG 2000 Coded Images with Sub-Resistance to Collusion Attacks |
| Sub Title (in English) | |
| Keyword(1) | Access control |
| Keyword(2) | One-way hash function |
| Keyword(3) | Scalability |
| Keyword(4) | Collusion attack |
| Keyword(5) | Internet |
| 1st Author's Name | Noriaki HASHIMOTO |
| 1st Author's Affiliation | Dept. of Information Processing, Tokyo Institute of Technology() |
| 2nd Author's Name | Masaaki FUJIYOSHI |
| 2nd Author's Affiliation | Dept. of Information and Communication Systems Engineering, Tokyo Metropolitan University |
| 3rd Author's Name | Hitoshi KIYA |
| 3rd Author's Affiliation | Dept. of Information and Communication Systems Engineering, Tokyo Metropolitan University |
| Date | 2008-04-17 |
| Paper # | SIP2008-1,IE2008-1 |
| Volume (vol) | vol.108 |
| Number (no) | 3 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |