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Some joint fingerprinting and decryption schemes were reported recently for secure multimedia distribution. However, most of them need to be investigated before practical applications. In this paper, the secure distribution scheme proposed by Lemma et al. is investigated and improved. Since this scheme aims to distribute multimedia content by encryption and watermarking, some important performances...
The delay-based fingerprint embedding was recently proposed to support more users in secure media distribution scenario. In this embedding scheme, some users are assigned the same fingerprint code with only different embedding delay. In fingerprint detection, the fingerprint codes are detected and the delays between them are determined, which tells the users who participated in the collusion. The...
Some joint fingerprinting and decryption (JFD) schemes are recently reported. However, most of them need to be investigated before practical applications. In this paper, the audio JFD scheme proposed by Lemma et al. is investigated and evaluated. Some flaws are found in the scheme, such as the low encryption strength, the data overflow caused by encryption and the fragileness to collusion attacks...
A secure video distribution scheme is proposed, which embeds a fingerprint code into the video content during decryption process. At the server side, the video content is scrambled by motion vector (MV) encryption. At the customer side, the video content is decrypted and fingerprinted simultaneously under the control of both the key and the fingerprint. For MV decryption and fingerprint embedding...
Robust watermarking techniques are always used for copyright and ownership assertion purposes. And many watermark embedding schemes in transform domain are proposed, such as 2-D DFT, 2-D DCT, 2-D DWT, 3-D DCT and 3-D DWT. Among them, the former three ones are used to transform image data, and the latter two ones are used to transform video data or 3-D image data. In this paper, we present an image...
A secure distribution scheme is proposed for compressed videos, which is based on a compression domain watermarking algorithm. At the server end, the watermarking-based encryption algorithm is used to encrypt the compressed data stream. At the receiver end, the joint fingerprint embedding and decryption (JFD) algorithm is adopted to decrypt and fingerprint video data simultaneously. For the features...
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