A Lightweight Privacy Preserved Buyer Seller Watermarking Protocol Based on Priced Oblivious Transfer

replacing traditional selling of digital products (such as songs, videos,movies, software, books, documents, images, etc.) through shops. This mode of sale can bring the product price down as infrastructure cost in setting up shops and retail chain is reduced. On downside, however, this may increase problem of piracy as digital data can be easily copied, manipulated and transmitted. To protect copyright of owner, establish right of buyer on purchased copy and yet check data piracy, it is required that a rusted e-distribution system be built. Such a system should be able to ensure secure transaction between buyer and seller, check ownership and track the origin of unauthorized copies..The buyer seller watermarking protocols are heavyweight protocols.These protocols require large computation power and network bandwidth.The heavyweight protocols could not be used for the resource constrained devices since the devices does not support battery power.A lightweight protocol has been proposed which is best suited for the resource constrained devices. The protocol is based on a fast asymmetric encryption with novel simplification.In this approach the seller authenticates the buyer but does not learn which items are purchased. The protocol is designed in such a way that the buyers pay the right price without disclosing the purchased item, and the sellers are able to identify buyers that released pirated copies. The protocol is constructed based on the priced oblivious transfer and the existing techniques for asymmetric watermark embedding. Index Terms- Buyer–seller watermarking protocol, fair exchange, priced oblivious transfer (POT). B I

China Bashing 2004

On April 26, 2004, Senator John Kerry released his six-point trade program, "Trade Enforcement: Asleep at the Wheel," and conspicuously targeted China for violating worker rights, dumping, and supporting "illegal currency manipulation" (Kerry 2004). Five days earlier, senior Bush administration officials met with Chinese Vice Premier Wu Yi to settle a few trade disputes (e.g., WiFi) but did not resolve the most contentious ones (exchange rates, semiconductors, and labor rights).

Cryptocurrencies and Bitcoin: Charting the Research Landscape

This systematic literature review examines cryptocurrencies (CCs) and Bitcoin. Because cryptocurrency research has not gained much attention from Information Systems (IS) researchers and needs a more vivid discussion, this review summarizes the main concepts of 42 papers and aligns them to IS Research. Although, cryptocurrency research has not reached IS mainstream yet, there is massive potential for multifaceted research ranging from protocol development to designing alternative digital currency schemes. Cryptocurrencies entail a core digital artifact and present a rich phenomenon based on the intertwining of technological artifacts and social contexts. We argue that cryptocurrencies are an alternative payment method that may replace intermediaries with cryptographic methods and should be embedded in the research areas of SIGeBIZ and SIGSEC. At the end of this literature review, we discuss some open research gaps like new business models based on cryptocurrencies or the influence of culture on cryptocurrencies and Bitcoin