Computer
Asmaa A Mohammed; Abdul Monem S. Rahma; Hala B. Abdulwahad
Abstract
The rapid "development of communication technology" has had a considerable impact on financial transactions, leading to the appearance of new types of "currency." These digital currencies are intended to streamline processes, decrease time and effort expenditures, and minimize financial losses while ...
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The rapid "development of communication technology" has had a considerable impact on financial transactions, leading to the appearance of new types of "currency." These digital currencies are intended to streamline processes, decrease time and effort expenditures, and minimize financial losses while doing away with the need for traditional financial intermediaries and central bank regulation. Despite persistent worries and hazards that remain in the minds of people participating in currency trading and stock exchanges, digital currencies have significantly impacted the global financial industry. The fundamental issue with digital currencies is the question of the legal and regulatory frameworks. Since digital currencies are decentralized, conventional regulatory frameworks might find it difficult to keep up with the consequences of this rapidly changing technology. This may result in ambiguity and uncertainty regarding the governance and regulation of digital currency.Best in Class In addition to exploring the ideas of Bitcoin and block chain technology, this study attempts to give an overview of digital currencies, including their definition, emergence, and development. The research examined the stages of development of digital currency from its inception in 2009 to the present year, 2023. It traced the evolution of digital currency over this period. The study provided into how digital currency has evolved from its early days, marked by the introduction of Bitcoin in 2009, to its current state in 2023.
Computer
Yasmin A. Hassan; Abdul Monem S. Rahma
Abstract
Since the Internet has been more widely used and more people have access to multimedia content, copyright hacking, and piracy have risen. By the use of watermarking techniques, security, asset protection, and authentication have all been made possible. In this paper, a comparison between fragile and ...
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Since the Internet has been more widely used and more people have access to multimedia content, copyright hacking, and piracy have risen. By the use of watermarking techniques, security, asset protection, and authentication have all been made possible. In this paper, a comparison between fragile and robust watermarking techniques has been presented to benefit them in recent studies to increase the level of security of critical media. A new technique has been suggested when adding an embedded value (129) to each pixel of the cover image and representing it as a key to thwart the attacker, increase security, rise imperceptibility, and make the system faster in detecting the tamper from unauthorized users. Using the two watermarking types in the same system reaches better results and increases the power of the system and makes it robust against any attack and revel the modification if any at the same time. PSNR has been used as a performance metric to evaluate the study. The result of the new proposed watermark is 54. It is preferable to utilize both a fragile and a robust watermark simultaneously.