| Presentation | 2017-11-07 A study of obfuscation for the security enhancement of watermarking schemes Koichiro Yamashita, Minoru Kuribayashi, Nobuo Funabiki, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In general, watermark information is embedded into the host signals selected from digital content according to a secret key. However, the selected host signals can be easily classified from given watermarked content if all algorithms except for the secret key are in public. One of the countermeasures was proposed in ICIP2015 that introduced a simple obfuscating operation. The drawback of the method is the redundancy in the entire watermarking process. The scheme introduced three stage of obfuscating operation that multiplied pseudo-random sequences twice and selected host signals randomly from its frequency components. Without the random selection, the secrecy of the host signals drastically decreases. In this study, we analyze the influence of watermark information given by obfuscating operation, and present the measurements whether watermark information is diffused. In addition, we confirm the validity of the measurements by proposing new method and evaluating the performance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | watermarking / obfuscating operations / security |
| Paper # | EMM2017-65 |
| Date of Issue | 2017-10-30 (EMM) |
| Conference Information | |
| Committee | EMM |
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| Conference Date | 2017/11/6(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kagoshima Univ. (Inamori Academy) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Multimedia Fusion, Content Processing, Multimedia Retrieval, Digital Watermarking, and Related Topics |
| Chair | Keiichi Iwamura(TUS) |
| Vice Chair | Hirohisa Hioki(Kyoto Univ.) / Minoru Kuribayashi(Okayama Univ.) |
| Secretary | Hirohisa Hioki(Shizuoka Univ.) / Minoru Kuribayashi(Tokyo Metro. Univ.) |
| Assistant | Kan Hyonho(NIT, Tokyo) / Harumi Murata(Chukyo Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Enriched MultiMedia |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A study of obfuscation for the security enhancement of watermarking schemes |
| Sub Title (in English) | |
| Keyword(1) | watermarking |
| Keyword(2) | obfuscating operations |
| Keyword(3) | security |
| 1st Author's Name | Koichiro Yamashita |
| 1st Author's Affiliation | Okayama University(Okayama Univ.) |
| 2nd Author's Name | Minoru Kuribayashi |
| 2nd Author's Affiliation | Okayama University(Okayama Univ.) |
| 3rd Author's Name | Nobuo Funabiki |
| 3rd Author's Affiliation | Okayama University(Okayama Univ.) |
| Date | 2017-11-07 |
| Paper # | EMM2017-65 |
| Volume (vol) | vol.117 |
| Number (no) | EMM-282 |
| Page | pp.pp.53-58(EMM), |
| #Pages | 6 |
| Date of Issue | 2017-10-30 (EMM) |