| Paper Abstract and Keywords |
| Presentation |
2006-11-16 13:50
A Study on Selective Encryption Methods for DCT Coefficients
Kazushi Okamoto, Masahiro Deguchi, Akihiro Shimizu (Kochi Univ. of Tech) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
Multimedia communications have been developing, and protection of video contents is an important issue.
Encryption techniques are effective for the protection.
Especially, a selective encryption method of DCT coefficients can protect the contents without high-processing loads.
Such an encryption method reduces encryption bits and encrypts specific DCT coefficients.
However, if statistical behaviors of DCT coefficient values have characteristics, then there is a risk of ciphertext-only attacks.
In this paper, the statistical behaviors of DCT coefficient values have been computed to some sample images.
Finally, the risk, which existing selective encryption methods of DCT coefficients are vulnerable to ciphertext-only attacks, has been evaluated with the statistical behaviors. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Multimedia Data Security / Selective Encryption / MPEG / Discrete Cosine Transform / / / / |
| Reference Info. |
IEICE Tech. Rep., vol. 106, Nov. 2006. |
| Paper # |
|
| Date of Issue |
2006-11-09 (ISEC, OIS) |
| ISSN |
Print edition: ISSN 0913-5685 |
| Download PDF |
|
| Conference Information |
| Committee |
ISEC LOIS |
| Conference Date |
2006-11-16 - 2006-11-17 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Univ. of Tokyo(Kashiwa Campus) |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
|
| Paper Information |
| Registration To |
LOIS |
| Conference Code |
2006-11-ISEC-OIS |
| Language |
English (Japanese title is available) |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
A Study on Selective Encryption Methods for DCT Coefficients |
| Sub Title (in English) |
|
| Keyword(1) |
Multimedia Data Security |
| Keyword(2) |
Selective Encryption |
| Keyword(3) |
MPEG |
| Keyword(4) |
Discrete Cosine Transform |
| Keyword(5) |
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| Keyword(6) |
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| Keyword(7) |
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| Keyword(8) |
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| 1st Author's Name |
Kazushi Okamoto |
| 1st Author's Affiliation |
Kochi University of Technology (Kochi Univ. of Tech) |
| 2nd Author's Name |
Masahiro Deguchi |
| 2nd Author's Affiliation |
Kochi University of Technology (Kochi Univ. of Tech) |
| 3rd Author's Name |
Akihiro Shimizu |
| 3rd Author's Affiliation |
Kochi University of Technology (Kochi Univ. of Tech) |
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| Speaker |
Author-1 |
| Date Time |
2006-11-16 13:50:00 |
| Presentation Time |
25 minutes |
| Registration for |
LOIS |
| Paper # |
ISEC2006-90, OIS2006-48 |
| Volume (vol) |
vol.106 |
| Number (no) |
no.351(ISEC), no.353(OIS) |
| Page |
pp.13-18 |
| #Pages |
6 |
| Date of Issue |
2006-11-09 (ISEC, OIS) |