Design and implementation of secure chaotic communication systems

Chaotic systems have properties such as ergodicity, sensitivity to initial conditions/parameter mismatches, mixing property, deterministic dynamics, structure complexity, to mention a few, that map nicely with cryptographic requirements such as confusion, diffusion, deterministic pseudorandomness, algorithm complexity. Furthermore, the possibility of chaotic synchronization, where the master system (transmitter) is driving the slave system (receiver) by its output signal, made it probable for the possible utilization of chaotic systems to implement security in the communication systems. Many methods like chaotic masking, chaotic modulation, inclusion, chaotic shift keying (CSK) had been proposed however, many attack methods later showed them to be insecure. Different modifications of these methods also exist in the literature to improve the security, but almost all suffer from the same drawback. Therefore, the implementation of chaotic systems in security still remains a challenge. In this work, different possibilities on how it might be possible to improve the security of the existing methods are explored. The main problem with the existing methods is that the message imprint could be found in the dynamics of the transmitted signal, therefore by some signal processing or pattern classification techniques, etc, allow the exposition of the hidden message. Therefore, the challenge is to remove any pattern or change in dynamics that the message might bring in the transmitted signal.EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Abbott's Gambit: The 2013 Australian Federal Election

This book provides a truly comprehensive analysis of the 2013 federal election in Australia, which brought the conservative Abbott government to power, consigned the fractious Labor Party to the Opposition benches and ended the ‘hung parliament’ experiment of 2010–13 in which the Greens and three independents lent their support to form a minority Labor government

The image and the body in modern fiction’s representations of terrorism: embodying the brutality of spectacle

My research arises from a critique of the tendency within terrorism debates to equate the terrorist act with the production of spectacular images. Chapter 1 uses the work of Luce Irigaray to critique this trend in terrorism discourses, arguing that such a characterisation relies on a repression of the very materiality that terrorist action exploits. Moreover, placing the concept of terror in an Irigarayan framework reveals that the concept of terrorism is bound up with concepts of masculinity. In developing this critical approach, I build on the thinking of both Irigaray and Gayatri Spivak in turning to literary representations of terrorism to find a means of articulating a new understanding of the concept of terrorism and its place within our culture. Chapter 2 brings together the figure of the woman terrorist in terrorism studies, Nadine Gordimer’s Burger’s Daughter(1979), and Doris Lessing’s The Good Terrorist (1985) in order to critique the portrayal of the feminine in terrorism discourses. Chapter 3 then moves on to ask how the global reach of terrorism discourses after September 11th, 2001, has impacted on our understanding of masculinity and femininity, looking at the relationship between the body and subjectivity in Ian McEwan’s Saturday (2006). Finally, Chapter 4 examines how Don DeLillo’s Falling Man (2007) figures the body as a site of resistance to such global narratives of terror, as he explores the possibility of an embodied ethics opening up a suspension of photographic and filmic modes of perception. By setting up a dialogue between terrorism studies and literary fiction, I reintroduce the body to our conceptualisation of terrorism. In doing so, I show how literature can open up new ethical horizons in an otherwise closed rhetoric