Conventional cryptographic schemes that cover only soft copies are inadequate to handle this requirement.ĭigital watermarking is a promising technology employed by various digital rights management (DRM) systems to achieve rights management. The reinforcement should also be applicable to both hard copies and soft copies of the documents. A major challenge in the reinforcement of distribution policies for sensitive documents is the support of non-repudiation in the underlying process so that unauthorized copies of intelligence documents can be identified and traced back to their users. Once after obtaining access to a sensitive document may a person make unnecessary copies or handle it without care. Access control based on cryptography alone cannot address this problem. Sensitive documents may be found left behind in conference rooms, common áreas, printing rooms, or public folders. The enforcement of distribution policies for sensitive intelligence documents is important but difficult. Key words: Intelligence contení management, Multimedia contení security, Digiíal waíermarking, Documení disíribuíion protocol, Intelligence user certifícate.
We also outline an implementation of the distribution protocol and watermarking scheme employed. In particular, keeping the identity secrecy between document providers and users (but yet traceable upon disputes) is a key contribution of this protocol in order to support for intelligence applications.
It makes use of intelligence user certificates to embed the identity of the users into the intelligence documents to whom are distributed. The distribution protocol is adapted from our previous work on the watermarking infrastructure for enterprise document management. The reinforcement of document distribution policies requires a concrete support of non-repudiation in the distribution process. In this paper, we propose a watermark-based document distribution protocol, which complements conventional cryptography-based access control schemes, to address the problem of tracing unauthorized distribution of sensitive intelligence documents. However, their applications in preventing unauthorized distribution of intelligence document have not been studied. Various watermarking techniques have been proposed to protect copyrights of multimedia digital contents over Internet trading so that ownership of the contents can be determined in subsequent copyrights disputes. Chiu 2 and Cedric Ho 3ĭepartment of Computer Science and Engineering, Hong Kong University of Science and Technology,ġ Dickson Computer Systems, Kowloon, Hong Kong watermarking is a promising technology to embed information as unperceivable signáis in digital contents. The Use of Digital Watermarking for Intelligence Multimedia Document Distribution Journal of Theoretical and Applied Electronic Commerce Research
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