Title :
A DCT robust multimedia authentication scheme
Author :
Li, Dequan ; Feng, Dengguo
Author_Institution :
Inst. of Software, Acad. Sinica, Beijing, China
Abstract :
In this paper, we analyze a fragile watermark algorithm of Lisa M. Marvel et al. (2000) and show a security weakness therein. We then show that a fragile watermark could not survive DCT compression as long as the authenticator is constructed from pixel values. After that, a new algorithm is presented, which gets rid of the severe security weakness and the implementation flaw of Lisa M. Marvel et al.´s method.
Keywords :
copy protection; data compression; discrete cosine transforms; image processing; security of data; DCT compression; DCT robust multimedia authentication scheme; authenticator; fragile watermark algorithm; security weakness; Algorithm design and analysis; Australia; Authentication; Digital signatures; Discrete cosine transforms; Information analysis; Information security; Laboratories; Robustness; Watermarking;
Conference_Titel :
Intelligent Information Systems Conference, The Seventh Australian and New Zealand 2001
Print_ISBN :
1-74052-061-0
DOI :
10.1109/ANZIIS.2001.974049
