Secure Multimedia Distribution Research Articles

Secure multimedia distribution in cloud computing using re-encryption and fingerprinting

Recently, cloud computing becomes a main platform for the distribution of multimedia content. The paradigm of multimedia distribution has been shifted from the models in traditional ways to the one in cloud computing. Security and privacy are two most important issues in multimedia distribution. The new model in cloud computing concerns the following issues. Firstly, outsourced content should be confidential except a data owner (DO). Secondly, the CSP is semi-trusted in the public cloud computing environment. A malicious data user (DU) may collude with the CSP to harm the DO’s rights and interests. Thirdly, the rights and interests of DU, including anonymity and unlinkability, should be protected. Based on the above problems, we propose and analyze a Multimedia Distribution based Re-encryption and Fingerprinting (MDRF) scheme in cloud computing. The proposed scheme 1) allows efficient distribution of the content while preserving security and privacy of copyright holders and end users, 2) resolve the problems of piracy tracing, collusion resistance, and dispute resolution, and 3) protect the rights and interests of DU, including anonymity and unlinkability. The analysis part demonstrates that the security of DO and DU are well provided in the proposed scheme. The experimental results evaluate the performance of our framework in terms of collusion resistance of the fingerprint and imperceptibility of fingerprint embedding.

Secure Multimedia Content Distribution for M2M Communication

Multimedia content distribution based on M2M communication is attracting increasing attentions nowadays. Considering that multimedia will be widely used in various applications over M2M network, the wide range of multimedia content and M2M devices has raised new security requirements for multimedia communication. In this paper, we focus on an aspect of DRM that involves secure multimedia distribution which combines multimedia encryption, copy detection, and digital fingerprinting to prevent widespread piracy. Multimedia encryption is used to encrypt multimedia content firstly before distribution, then, Copy detection is used to verify whether a protected multimedia content is a redistributed copy of its or no, At last, digital fingerprinting is introduced to protect multimedia content further. In this paper, we first use using encryption, fingerprinting and copy detection for secure distribution in M2M communication environments. The secure effect of the proposed scheme has been verified through theory analysis and experimental results.

Secure Multimedia Distribution Based on Watermarking and Encryption

Secure Multimedia Distribution Based on Watermarking and Encryption

Lightweight secure multimedia distribution based on homomorphic operations

A secure media distribution scheme is proposed in this paper, which distributes different media copy to different customer in a secure and efficient manner and is able to trace illegal redistribution. At the sender side, media data are scrambled with a random sequence under the control of a secret key. At the receiver side, the scrambled media data are descrambled with a new random sequence under the control of a unique customer code besides the secret key. The scrambling and descrambling strength can be adjusted by the parameter named quantization factor. Generally, the bigger factor is used in scrambling and the smaller one is used in descrambling. After descrambling, the recovered media copy that contains a unique customer sequence, named fingerprint, is slightly different from the original one. This difference is imperceptible to human eyes, while can be detected by computers and used to trace the redistribution of the media copy. Additionally, the unique customer sequence is produced by the collusion-resistant code, which can survive the attacks that combine several copies by averaging. The scheme's performances, including security, imperceptibility, robustness and efficiency, are analyzed and tested in detail. Its good performances make it a suitable choice for lightweight secure multimedia distribution, such as music download, image sharing, live TV or video-on-demand, etc., especially over Mobile terminals.

Secure and traceable multimedia distribution for convergent Mobile TV services

Few papers have focused on secure mobile multimedia distribution that protects both the confidentiality and copyright in mobile multimedia services. In this paper, a secure multimedia distribution scheme is presented for a ubiquitous mobile content service, i.e., the Mobile TV based on the converged DVB-H (Digital Video Broadcasting – Handheld) and GPRS/GSM. At the server side, the Joint Compression and Encryption method is proposed to encrypt video contents. At the mobile terminal side, the Joint Decryption and Fingerprinting method is proposed to decrypt video contents and simultaneously embed the mobile terminal’s identification information. When the media content is illegally redistributed to public networks, such as Internet or public TV, the proposed Fingerprint Detection and Traitor Tracing method will be used to identify the illegal redistributor. To show the proposed scheme’s prior performances, the existing secure media distribution schemes are reviewed, and the comparative evaluations are done. The analysis and experimental results show that the proposed scheme is more suitable for secure mobile multimedia distribution. The work is expected to attract more researchers.

Realising time limitation for cryptographic keys in secure multimedia distribution

AbstractIf the results of the latest studies for Internet usage are to be believed, worldwide 12 million TV consumers will be using Internet protocol TV (IPTV) instead of the traditional TV broadcasting by the year 2010. These figures were published by ABI Research in 2006. Furthermore, analysts of Informa Telecoms & Media are forecasting the worldwide grow in revenue of IPTV to be 10 billion dollar by 2010. The revolution that is described by these figures implies on the one hand an enormous increase in sales values but on the other hand causes problems in handling the data volume. Moreover, IPTV will be attracting criminal attacks like Pay‐TV has in traditional broadcasting. Therefore, not only efficient encoding of media data has to be applied to save transmission capacity but also security mechanisms should be established to prevent unauthorised access. This paper will give a short overview of possible infrastructure setup as well as a method for the use of time‐limited keys. Copyright © 2008 John Wiley & Sons, Ltd.

Collusion-Traceable Secure Multimedia Distribution Based on Controllable Modulation

In this paper, a secure multimedia distribution scheme resistant to collusion attacks is proposed. In this scheme, the multimedia content is modulated by n pseudorandom sequences at the server side, which generates the unintelligible multimedia content, and then demodulated under the control of the fingerprint code at the customer side, which produces the multimedia content contains a unique code. The demodulation process adopts collusion-resistant fingerprint codes to determine which sequences will be removed from the received multimedia content. Since the collusion-resistant fingerprint code is used, the colluders who combine different copies together can be detected. Compared with existing schemes, the collusion-resistant code is used in the proposed scheme, which confirms the robustness against collusion attacks. This scheme provides a good choice for secure multimedia content distribution.