In this era where everything is becoming digital the most challenging topic in front of us Data Security every aspect even secured communication channel. These issues can be tackled by using strong Encryption and trusted third party who maintains database. The fast development Digital Technology also comes with rapid crimes insecurity data theft. From time to engineers came up many encryption t...

Solutions to the problem of transmitting data to a group of receivers in a way that only the correct sub-set of all possible receivers can decrypt the data are needed by a number of applications: Pay-TV, rights-controlled media, audio streaming, realtime business data, multicast communication are current examples, but there also off-line applications, particularly with regard to storage media f...

Image, which covers the highest percentage of the multimedia data, its protection is very important. This can be achieved by cryptography. Image encryption plays an important role to ensure confidential transmission and storage of image over internet.It becomes an important issue that how to protect the confidentiality, integrity, and authenticity of image.A real–time image encryption faces a g...

Over the last three years, several encryption algorithms, applied to MPEG video streams, emerged. Most of the algorithms tried to optimize the encryption process with respect to the encryption speed due to the temporal properties of video retieval and display process. Permutation Algorithm, with respect to not only their encryption speed metric, but also their security level and stream size met...

Content security is an important issue in multimedia applications. In this paper we perform a cryptanalysis of several encryption algorithms that have been proposed to protect the privacy of MPEG video streams. In particular, we analyze the encryption based on permuting the Huffman codeword list, and two selective encryption algorithms VEA and MVEA. For the convenience of the reader, we provide...

Security of multimedia data is an imperative issue because of fast evolution of digital data exchanges over unsecured network. With the progress in data exchange by the electronic system, we need to secure information. In this paper 128 bit image encryption is used for securing the image. Many security issues are also concern with this exchange and sharing of information. These may be authentic...

In the digital world nowadays, multimedia security is becoming more and more important with the continuous increase in the use of digital communications on the Internet. In addition, special and reliable security in storage and transmission of digital images and videos is needed in many digital applications, such as pay-TV, confidential video conferencing and medical imaging systems, etc. Unfor...

Driven by the development of multimedia, encryption multimedia digital audio has received more attention; however, cryptography-based methods have many shortcomings in information, and new are urgently needed. This paper briefly introduced cryptography chaos theory, designed a chaos-based algorithm that combined Logistic mapping Sine for confusion used Hopfield neural network diffusion, explain...

Information Security is an important problem in communication. Information includes text, audio, video, image etc. When information is transferred through various networks, there is high chance of unauthorized access. In many fields such as medical science, military, geographic satellite images etc, high security of information is guaranteed using encryption. As a result, the data confidentiali...