Key establishment is the process whereby two or more parties derive a shared secret, typically used for subsequent confidential communication. However, identifying the exact security requirements for key establishment protocols is a non-trivial task. This thesis compares, extends and merges existing security definitions and models for key establishment protocols. The primary focus is on two-party key agreement schemes in the public-key setting. On one hand new protocols are proposed and analyzed in the existing Canetti-Krawzcyk model. On the other hand the thesis develops a security model and novel definition that capture the essential security attributes of the standardized Unified Model key agreement protocol. These analyses lead to the development of a new security model and related definitions that combine and extend the Canetti-Krawzcyk pre- and post- specified peer models in terms of provided security assurances. The thesis also provides a complete analysis of a one-pass key establishment scheme. There are security goals that no one-pass key establishment scheme can achieve, and hence the two-pass security models and definitions need to be adapted for one-pass protocols. The analysis provided here includes the description of the required modification to the underlying security model. Finally, a complete security argument meeting these altered conditions is presented as evidence supporting the security of the one-pass scheme. Lastly, validation and reusing short lived key pairs are related to efficiency, which is a major objective in practice. The thesis considers the formal implication of omitting validation steps and reusing short lived key pairs. The conclusions reached support the generally accepted cryptographic conventions that incoming messages should not be blindly trusted and extra care should be taken when key pairs are reused.

The main goal of cryptography is to enable secure communication over a public channel; often a secret shared among the communicating parties is used to achieve this. The process by which these parties agree on such a shared secret is called key agreement. In this thesis, we focus on two-party key agreement protocols in the public-key setting and study the various methods used to establish and validate public keys. We pay particular attention to certificateless key agreement schemes and attempt to formalize a relevant notion of security. To that end, we give a possible extension of the existing extended Canetti-Krawzcyk security model applicable to the certificateless setting. We observe that none of the certificateless protocols we have seen in the literature are secure in this model; it is an open question whether such schemes exist. We analyze several published certificateless key agreement protocols, demonstrating the existence of key compromise impersonation attacks and even a man-in-the-middle attack in one case, contrary to the claims of the authors. We also briefly describe weaknesses exhibited by these protocols in the context of our suggested security model.

Ett av de vanligaste sätten att bedriva näringsverksamhet i Sverige är genom att bilda ett aktiebolag. De svenska aktiebolagen regleras genom ett omfattande regelverk i aktiebolagslagen. Ägarna i ett privat aktiebolag är inte alltid tillfreds med reglerna i aktiebolagslagen, utan vill reglera vissa förhållanden ytterligare mellan sig. Aktieägarna har möjlighet att genom aktieägaravtal reglera vissa förutsättningar för verksamheten. När aktieägarna väljer att reglera vissa förhållanden mellan sig i ett aktieägaravtal kan det uppstå skillnader mellan vad som gäller enligt aktieägaravtalet och vad som gäller enligt aktiebolagslagen. Det råder en självständighet mellan avtalsrätten och aktiebolagsrätten vilken innebär att aktieägarna inte med bindande verkan kan avtala vissa förhållanden sinsemellan samt att avtalet inte ses som aktiebolagsrättsligt gällande i vissa fall. Uppsatsen har som syfte att utreda de rättsverkningar som ett aktieägaravtal kan ge upphov till i två situationer, det handlar dels om när avtalsparterna är aktieägare, dels när avtalsparterna är styrelseledamöterna. I situationen med aktieägarna utreds två scenarier dels om ett partnermöte kan utgöra en bolagsstämma, dels om själva aktieägaravtalet kan utgöra ett protokoll med beslut som får samma rättsverkningar som ett bolagsstämmobeslut. I situationen med styrelseledamöterna utreds huruvida de kan bli bundna av avtal och vilka följder det kan få. Slutsatserna som presenteras i uppsatsen är att den svenska aktiebolagsrätten är mycket försiktig vid tillåtandet av att ge aktieägaravtal rättsverkningar även aktiebolagsrättsligt. Enligt uppsatsförfattaren finns det dock anledning att, under förutsättning att vissa rekvisit är uppfyllda, tillåta verkningar för aktieägaravtal inom aktiebolagsrätten. / One of the most common ways to carry out business activities in Sweden is by establishing a limited liability company, which are regulated by extensive rules in The Swedish Companies Act. The shareholders of such companies are not satisfied at all times with the rules in the Act and therefore want to regulate certain conditions between each other. They have the possibility to regulate such conditions by enter into a shareholder agreement. When the shareholders choose to regulate conditions between each other there might be a difference between what is valid according to the agreement and to the Act. In Sweden there is autonomy between the contract laws and the corporate law, which means that shareholders mutually cannot contract certain conditions and that the contract in some occasions does not become binding according to corporate law. This thesis has as its purpose to investigate the legal effects of a shareholder agreement in two situations; firstly when the parties are the shareholders and secondly when the parties are the members of the board of directors. In the first situation two scenarios are investigated, firstly if a meeting prior to a general meeting can have the same legal effects as a general meeting and secondly if the shareholder agreement can have the same legal effects as the minutes from a general meeting. In the situation with the members of the board it is investigate if they can enter into a contract and the legal effects thereof. The conclusions presented in this thesis are that the corporate law in Sweden is very cautious in giving shareholder agreements legal effects. According to the author of the thesis there are however certain occasions where the shareholder agreement should be given legal effects not just between the parties but also in relation to the corporate law, if certain requirements are fulfilled.

The United States is the single largest contributor of greenhouse gas emissions. Its engagement is therefore critical to the success of any international effort to prevent man-made global climate change. It was therefore a huge step-back for the international community when President Bush soon after taking office in 2001 rejected the Kyoto Protocol. Despite a strong opposition the international community did not convince the Bush administration to reconsider its decision and re-engage in the Kyoto Protocol process. The objective of this thesis is to investigate which central elements that will increase a US inclination to participate in international agreements after the first commitment period in the Kyoto Protocol. These elements were found through a literature study of four peer-reviewed articles and an empirical analysis of four international partnership agreements. The overall conclusion is that there are several central elements that could increase a US inclination to participate in international agreements after the first commitment period in the Kyoto Protocol. These elements cover a wide range of disciplines from technology over research and development to business interests.

Machinery industry is the engine of the industrialization for a nation. During the last four decades of industrial development in Taiwan, machinery industry has played a key leading role. With an overall production value at NT$680 billion in 2009, the Taiwanese machinery industry ranks among the top 20 nations worldwide. Its tooling machines and carpentry machines etc. are ranked in the global top 5 exporting countries. Mainland China (including Hong Kong), with increasingly importance, is currently the number one export destination as well as the number three country of origin for imports for the Taiwanese machinery industry. With the cross-strait relations becoming progressively more close, Taiwan and the Mainland are about to sign the Economic Cooperation Framework Agreement (ECFA). ECFA will serve as Taiwan¡¦s breakthrough in the country¡¦s participation in regional cooperation, promote its signing of Free Trade Agreement with other countries, and stimulate its economic development further. The signing of ECFA will enable the machinery industry in Taiwan to benefit and prosper from a huge Mainland market. It will also likely to cause some in the industry to stumble because of massive cheap Mainland imports. This research has studied the key competitive factors for corporations, the competitive situation and operations issues of the machinery industry in Taiwan. By conducting a survey on the senior managers of the machinery industry we understand what their current status, problems and competitive strategies are. Through the insight gained we hope to provide a blueprint for the machinery industry and the subject company reviewed to better their competitive strategies after ECFA is signed across the straits. This research has confirmed that in an ever increasingly competitive industry such as the machinery industry, any company wants to continue to make money and grow sustainably, it is vital to always adapt to the environment and adjust its competitive strategies. After the signing of the ECFA across the straits, the machinery industry together with many other industries in Taiwan will benefit from the lowering of the tariffs and favorably gain access to the Mainland market. Hence a good opportunity for all companies concerned to make the best of the cross-straits cooperation this time around, further their investment in China and further their competitiveness globally.

The purpose of the research is to seek for the key success factors of free trade agreements. And the result show: -FTA between countries with similar cultural background brings more benefits. But sometimes difference could be a plus. -Countries with more FTA signed benefit more while signing new FTAs. Other important factors include the sound institution and operational environment offered by a country. -FTA between geographically proximate countries benefits more. Also, FTA with country with good location that is closed to big markets brings more benefit. -Factors like the original tariff, quality of infrastructure, cost of human resources, and level of technology are the reasons that affect the benefits of FTA.

Vehicular ad-hoc network (VANETs) has been a hot research topic in recent years. In this environment, each vehicle can broadcast messages to other vehicles and inform drivers to change their route right away in order to enhance the efficiency of driving and to avoid accidents. Since vehicles communicate through wireless tunnel, many malicious attacks may occur during the transmission of messages. Consequently, ensuring the correctness of receiving messages and verifying the authenticity of the sender is necessary. Besides, we also need to protect the real identities of vehicles from revealing to guarantee the privacy. To satisfy these security properties, many related researches have been proposed. However, they all have some drawbacks. For example: 1. The cost of the certificate management and the exposure problem of the certificate. 2. Waiting for RSU to verify the messages: Once more vehicles need RSU, RSU will have much more overhead and it can¡¦t achieve real-time authentication. In this thesis, we come up with an anonymous authentication and key agreement scheme based on chameleon hashing and ID-based cryptography in the vehicular communication environment. In our scheme, every vehicle can generate many different chameleon hash values to represent itself, and others can prove the ownership of chameleon hash value. Furthermore, unlike other pseudonymous authentication schemes, we also achieve one-to-one private communication via ID-based cryptography. Finally, we not only overcome some problems in previous works but also fulfill some necessary security requirements in vehicular communication environment.

<p>The United States is the single largest contributor of greenhouse gas emissions. Its engagement is therefore critical to the success of any international effort to prevent man-made global climate change. It was therefore a huge step-back for the international community when President Bush soon after taking office in 2001 rejected the Kyoto Protocol. Despite a strong opposition the international community did not convince the Bush administration to reconsider its decision and re-engage in the Kyoto Protocol process. The objective of this thesis is to investigate which central elements that will increase a US inclination to participate in international agreements after the first commitment period in the Kyoto Protocol. These elements were found through a literature study of four peer-reviewed articles and an empirical analysis of four international partnership agreements. The overall conclusion is that there are several central elements that could increase a US inclination to participate in international agreements after the first commitment period in the Kyoto Protocol. These elements cover a wide range of disciplines from technology over research and development to business interests.</p>

Thesis (LL. M.)--York University, 2001. Graduate Programme in Law. / Typescript. Includes bibliographical references (leaves 205-237). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://wwwlib.umi.com/cr/yorku/fullcit?pMQ66408.

There have been fewer studies performed to understand real-world software-testing practice than for other areas of software engineering, such as software requirements, design and development. In particular, surprisingly little is known about global software-testing practices---the practice of outsourcing testing activities to a company offshore---which is currently a large industry and is continuing to grow rapidly. Hence, it is important to study this practice. Moreover, research and anecdotal records provide evidence suggesting that cultural factors greatly impact aspects of the global software-engineering practice (e.g., quality and productivity). The evidence indicates that culture appears to have a greater influence on global software-engineering practice than originally envisioned. Thus, it is important to understand culture's influence particularly on the global-software testing practice. Most of the global software practice studies have used the cultural-dimensions (e.g., Hofstede's dimensions) approach to understand culture’s influence on this practice. However, such dimensional perspectives of culture significantly limit the meaning of culture. Hence, it is important to study culture's influence on global software-testing practice by adopting a non-dimensional perspective of culture so that hidden cultural facets can be identified and uncovered. In this dissertation research, I conducted three ethnographically-informed studies at different Indian vendor organizations, who provided software-testing services to their respective clients in a global setting, to better understand what and how cultural factors influence the global software-testing practice. I used the “culture as models” perspective, adapted from the cultural anthropologist Bradd Shore, to analyze the data from these studies. The dissertation provides a detailed description of the study design, the data analysis, and the insights that emerged from the study. The study provided insights into four embedded cultural models that have emerged from this practice---Agreement, Trust, Flexibility, and Global Software Delivery Cultural Models -- which are described and discussed in detail. This dissertation makes the following contributions. First, it describes a framework that facilitates conducting culture-based studies in the global software- engineering domain. Second, it exposes significant cultural models that are embodied in the specific global software-testing practices investigated to better understand the affordances and clashes of cultural facets of such practices more widely. Third, it presents a ``thick description'' of the role and interplay of these cultural facets in the global software-testing practices investigated. Finally, based on the study insights, the dissertation provides implications for practice and future research.