Survey of Video Encryption Algorithms

Research on security of digital video transmission and storage has been gaining attention from researchers in recent times because of its usage in various applications and transmission of sensitive information through the internet. This is as a result of the swift development in efficient video compression techniques and internet technologies. Encryption which is the widely used technique in securing video communication and storage secures video data in compressed formats. This paper presents a survey of some existing video encryption techniques with an explanation on the concept of video compression. The review which also explored the performance metrics used in the evaluation and comparison of the performance of video encryption algorithms is being believed to give readers a quick summary of some of the available encryption techniques

Remote Usability Testing with Live Video Streaming

Käytettävyystestien etähavainnointi lisäisi käytettävyystestausprosessin joustavuutta ja vähentäisi testipaikalle matkustamiseen liittyviä kuluja. Tässä diplomityössä arvioidaan kuinka suoratoistovideo Internetin välityksellä sopii käytettävyystestausprosessiin, minkälaisia ratkaisuja tähän on tarjolla ja kuinka nämä ratkaisut suoriutuvat. Käytettävyystestausprosessi on osa tuotekehitystä ja ihmiskeskeistä suunnitteluprosessia. Aluksi etähavainnointityökalulle määritettiin vaatimukset. Neljä eri ratkaisua arvioitiin ominaispiirteidensä ja ominaisuuksiensa kautta, sekä testattiin aidossa käytettävyystestiympäristössä. Etähavainnointityökalun tulee taata luotettava, turvallinen ja katkeamaton suora videoyhteys ja toisto. Toisin kuten viihteessä, työkalun ei tarvitse tarjota korkealuokkaista mediakokemusta. Työkalun tulisi myös tukea vähintään tavanomaisimpia käytettävyystestilaitekokoonpanoja. Työkalulle ei ole ylivoimaisesti parasta yleisluontoista ratkaisua, mutta erilaisille tarpeille ja tilanteille on tarjolla varteenotettavia kandidaatteja.Being able to observe usability tests remotely would increase the flexibility of the usability testing process and decrease the expenses of traveling to the test site. This thesis assesses how streaming video over the Internet would fit the usability testing process, what kinds of solutions are available and how they perform. The usability testing process is a part of product development and the human-centered design process. In the beginning, the criteria for a remote observation tool for usability testing were defined. Four different solutions were evaluated by their characteristics and features which were also tested in a real usability test environment. The remote observation tool must guarantee reliable, secure and uninterrupted live video transmission and playback. Unlike in entertainment, the tool is not required to offer a high quality media experience. The tool should also support at least the basic usability testing setups. There is no ultimate generic choice for the tool but there are suitable candidates for different needs and situations

Buyer-seller watermarking protocol in digital cinema

Master'sMASTER OF SCIENC

inVídeo : Uma aplicação de vídeo interactivo sobre a Internet

Tese de mestrado. Faculdade de Engenharia. Universidade do Porto. 199

Impact of access control and copyright in e-learning from user’s perspective in the United Kingdom

This thesis was submitted for the award of Doctor of Philosophy and was awarded by Brunel University LondonThe widespread adoption of E-Learning has largely been driven by the recommendations of educational technologists seeking to convey the benefits of E-Learning as a valuable accessory to teaching and possible solution for distance-based education. Research in the E-Learning domain has mainly focused on providing and delivering content andinfrastructure. Security issues are usually not taken as central concern in most implementations either because systems are usually deployed in controlled environments, or because they take the one-to-one tutoring approach, not requiring strict security measures. The scope of this research work is to investigate the impact of Access Control and Copyright in E-Learning system. An extensive literature review, theories from the field of information systems, psychology and cognitive sciences, distance and online learning, as well as existing E-Learning models show that research in E-learning is still hardly concerned with the issues of security. It is obvious that E-learning receives a new meaning as technology advances and business strategies change. The trends of learning methods have also led to the adjustment of National Curriculum and standards. However, research has also shown that any strategy or development supported by the Internet requires security and is therefore faced with challenges. This thesis is divided into six Chapters. Chapter 1 sets the scene for the research rationale and hypotheses, and identifies the aims and objectives. Chapter 2 presents the theoretical background and literature review. Chapter 3 is an in-depth review of the methods and methodology with clear justification of their adaptation and explains the underlying principles. Chapter 4 is based on the results and limitations obtained from the six case studies observations supported with literature review and ten existing models, while Chapter 5 is focused on the questionnaire survey. Chapter 6 describes the proposed Dynamic E-Learning Access Control and Copyright Framework (DEACCF) and the mapping of the threats from the Central Computing and Telecommunications Agency (CCTA) Risk Analysis and Management Method (CRAMM) to Annualised Loss Expectancy (ALE). Chapter 7 presents the conclusions and recommendations, and the contribution to knowledge with further development plans for future work