Orientador: Ricardo Dahab / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Computação / Made available in DSpace on 2018-08-14T04:06:33Z (GMT). No. of bitstreams: 1 Morais_EduardoMoraesde_M.pdf: 1060073 bytes, checksum: 349e64f9f2a5456f3af935607dfa5e3d (MD5) Previous issue date: 2009 / Resumo: A criptografia baseada em identidades representa uma alternativa ao modelo de certificação digital, exigindo menor esforço para solucionar o problema de autenticidade da chave pública, mas perdendo a custódia da chave privada, que será gerada por uma autoridade de confiança. O modelo de criptografia sem certificados soluciona o problema da custódia da chave privada sem a utilização de certificados digitais. Neste modelo, o usuário tem a posse de uma parte da chave privada e com isso a chave pública passa a ser constituída de uma parte gerada pela autoridade de confiança e uma parte gerada pelo usuário. A cifrassinatura é uma primitiva criptográfica que reúne as vantagens do ciframento e da assinatura em uma única operação, permitindo maior eficiência e segurança. A literatura possui diversas propostas de ciframento sem certificados e assinatura sem certificados, mas não tem uma proposta genérica de cifrassinatura sem certificados. Este trabalho propõe um protocolo de cifrassinatura sem certificados eficiente, que pode ser implementado usando dois emparelhamentos bilineares. Considerando a importância de emparelhamentos bilineares para a construção do protocolo proposto, este trabalho apresenta os conceitos matemáticos necessários para a obtenção de emparelhamentos bilineares eficientes e resistentes a ataques ao problema do logaritmo discreto sobre a curva elíptica e sobre o corpo de extensão resultante do cálculo do emparelhamento bilinear. São apresentados também algoritmos eficientes para aritmética de precisão arbitrária, aritmética de curvas elípticas e cálculo de emparelhamentos. Além disso, são discutidos modelos formais de segurança, como por exemplo o modelo do oráculo aleatório. Finalmente, o modelo de criptografia baseada em identidades e o modelo de criptografia sem certificados são discutidos e com isso é possível apresentar a proposta de cifrassinatura sem certificados e argumentar que esta proposta _e segura e eficiente / Abstract: Identity based cryptography is an alternative to digital certification, which requires less computational effort to solve the problem of public key authenticity. On the other hand, identity based cryptography has the problem of key escrow, because the private key is generated by a trust authority. The certificateless cryptography model solves the key escrow problem without digital certificates. In this model, the user computes a parcial private key that is used to compose the entire private key. In the same way, the public key has two parts: one generated by the user and the other generated by the trust authority. Signcryption is a cryptographic primitive that has the advantages of encryption and signature together in a single operation, allowing the construction of secure and efficient protocols. The literature has many certificateless encryption and certificateless signature protocols, but there is no generic and efficient certificateless signcryption scheme. This work proposes an efficient certificateless signcryption protocol, that can be implemented with just two bilinear pairings. Considering the importance of bilinear pairings for the construction of the proposed protocol, this work presents the mathematical concepts for efficient bilinear pairings, that can resist against discrete logarithm atacks on the elliptic curve and on the extension field. This works also presents efficient algorithms for big number arithmetic, elliptic curve arithmetic and the Miller algorithm for pairings. It also presents formal security models, such as the random oracle model. Finally, identity based cryptography and certificateless cryptography models are defined and the proposed certificateless signcryption scheme is presented and we argue that it is secure and eficient, although no formal proof is given / Mestrado / Criptografia / Mestre em Ciência da Computação

Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-10-14T17:42:00Z No. of bitstreams: 1 lucianaalvesdominato.pdf: 266751 bytes, checksum: 77579ed12e08f1ddbdb337a6697d64cd (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-10-22T13:08:18Z (GMT) No. of bitstreams: 1 lucianaalvesdominato.pdf: 266751 bytes, checksum: 77579ed12e08f1ddbdb337a6697d64cd (MD5) / Made available in DSpace on 2016-10-22T13:08:18Z (GMT). No. of bitstreams: 1 lucianaalvesdominato.pdf: 266751 bytes, checksum: 77579ed12e08f1ddbdb337a6697d64cd (MD5) Previous issue date: 2008-09-30 / O presente estudo tem por escopo discutir o licenciamento compulsório de patentes dos anti-retrovirais como uma escolha do Estado para a implementação de determinada política pública na área da saúde. Para tanto, apresentamos a evolução histórica das políticas públicas de saúde no país, a forma de financiamento da saúde hoje e os critérios utilizados para a alocação de recursos na saúde. Posteriormente discutimos o papel dos atores sociais para a determinação da agenda, especificamente no campo da saúde e por fim, analisamos alguns aspectos do direito patentário e a possibilidade de utilização do licenciamento compulsório como um instrumento hábil para garantir o acesso universal à saúde, ponto em que ocorre um embate do Estado x Mercado. / This study aims to discuss the compulsory license for anti-retroviral drugs as a governmental choice for the implementation of certain public health policies. In order to accomplish such assignment, we present the historical evolution of public health policies in Brazil, the means of financial support concerning health policies today, and the criteria used for the allocation of financial resources in health policies. After, we discuss the role played by social actors in the determination of the health agenda, and, finally, we analyze some aspects of patent law in regards to the possibility of deploying compulsory license as an efficient instrument to ensure the universal access to health policies, which turns out to be a collision point between the government and the market.

Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-02-17T18:59:38Z No. of bitstreams: 1 jenifferdesouzafaria.pdf: 2092214 bytes, checksum: e1ecb0657bad81fb647ad61f4bf88e0f (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-02-26T13:19:31Z (GMT) No. of bitstreams: 1 jenifferdesouzafaria.pdf: 2092214 bytes, checksum: e1ecb0657bad81fb647ad61f4bf88e0f (MD5) / Made available in DSpace on 2016-02-26T13:19:31Z (GMT). No. of bitstreams: 1 jenifferdesouzafaria.pdf: 2092214 bytes, checksum: e1ecb0657bad81fb647ad61f4bf88e0f (MD5) Previous issue date: 2014-04-29 / Imersa em um Projeto de Pesquisa que propiciou processos educativos em Educação Ambiental, a presente pesquisa procurou compreender de que forma tais ações educativas tocaram os sujeitos envolvidos. Assim, tivemos como objetivo apontar os desafios e as possibilidades/potencialidades de um processo de construção metodológica para Programas de Educação Ambiental no licenciamento, a partir de um relato de experiência. As premissas teórico-metodológicas que embasaram a presente pesquisa pautam-se na perspectiva crítica, emancipatória de Educação Ambiental, atrelada ao seu desenvolvimento metodológico de forma participativa em Projetos e Programas executados no decorrer de um licenciamento ambiental. Ao utilizar como estratégia metodológica a pesquisa qualitativa do tipo etnográfica, ou seja, uma adaptação da etnografia quando o foco refere-se aos estudos dos processos educativos, pudemos observar, narrar e analisar alguns elementos os quais julgamos pertinentes na constituição da proposta metodológica que se pretende construir. Dentre os principais aspectos levantados, podemos apontar o tempo como principal desafio na implementação de um PEA. Apesar disso, inúmeras foram as possibilidades propiciadas como aprender, refletir, questionar, participar, conhecer a própria realidade, assim como descobrir potencialidades locais a relação que os sujeitos estabelecem com o lugar onde vivem e as lideranças locais organizadas e relacionadas a grupos religiosos. Tais aspectos se configuram como um forte aliado para compreender os motivos que levaram as pessoas a darem prosseguimento, ou não, ao movimento empreendido pelo PEA e comprovar em que medida as estratégias participativas são condizentes com a realidade dos sujeitos prioritários envolvidos e os objetivos de proposta emancipatória e crítica de Educação Ambiental implementada no decorrer de um licenciamento. / Immersed in a research project that provided education in environmental education processes, this research sought to understand how these educational activities have approached the subjects involved. So we had to point out the challenges and opportunities / potential of a methodological process of construction for Environmental Education Programs in licensing from an experience report. The theoretical and methodological premises that supported this research are guided in a critical perspective. Also, emancipatory Environmental Education is linked to its methodological development in a participatory manner in Projects and Programs implemented over an environmental license. By using the methodological strategy of ethnographic qualitative research style, it means an adaptation of ethnography when the focus refers to studies of educational processes. It was possible to observe and analyze some elements which is believed to be methodological relevant to this proposal. Among the main aspects pointed, it was identified at the time as the main challenge in implementing the EEP. However, many possibilities such as learning, reflecting, questioning, participating, and meeting reality itself were experienced. And even discovering local potential as the relationship that subjects have with the place where they live and organized local leaderships and related to religious groups. Such aspects are configured as a strong ally to understand the reasons which led people to continue or not the movement undertaken by the EEP. And also to demonstrate the extent to which a participatory approach is consistent with the reality of the people involved and the goals of emancipatory proposal and criticism of Environmental Education in implementing an EEP in licensing.

Context Spyware is “computer software that obtains information from a user's computer without the user's knowledge or consent” [25]. Spyware is often embedded in another application and is usually stated in End User License Agreement (EULA) [20]. However it is quite common to accept the EULA without even reading it. Therefore beside the traditional spyware analysis techniques, automated EULA analysis can be helpful for common users in order to identify the spyware [18]. Objectives The techniques of automated EULA analysis do exist however the process of taking a binary application, analyze it, and prepare it in order to extract the EULA has not been studied in existing research. There is a need for such a tool that can extract and analyze the EULA text from an installer binary without executing it. Objectives of this research are to investigate the techniques to unpack the binary file, extract the EULA, analyze it and present the analysis results to the end user. Methods In order to establish basic understanding of the related concepts preliminary study is done. In this study a number of article sources are used, including ACM Digital Library, Compendex, Inspec, IEEE Xplore, and Springer Link. Material has been selected after reading titles and summaries. Prototype of an open source tool is designed and developed. This tool extracts the EULA from executable binary installers, analyzes the extracted text and gives suggestions about legitimate level of the software. Results To evaluate our application we downloaded 150 executables from different web sites, which were already classified as bad or good by [23]. We used our tool to extract EULA text from executables. We were able to extract EULA from 48 percent of selected binary files. Analysis of extracted EULAs was also done to classify the software as good or bad. This analysis assists the user to make a decision to accept or reject the installation of software without reading even a single word of EULA. During the extraction and analysis process there was no significant impact on performance of the host system. Conclusion We conclude that EULA can be extracted from a binary file without executing it. However because of limited time it was not possible to extract EULA from all installer binaries. The rate of EULA extraction can be improved in future research.

This thesis is describing a business strategy of how to license a software product. The licenses discussed in this thesis are called open source licenses. The open source licenses have gained much attention lately by companies such as Microsoft, IBM, and Sun Microsystems. The reason for this is that some products considered being open source software are very widely used. These products include the most popular web server, the Apache web server, with more than 60% market share. 25% of the installed operating systems that are running Apache and other web servers are installed with Linux as operating system, which is also considered as open source software. These are only two examples of popular products that are considered as open source software products. These products are choices for many people and companies when choosing software to use, for example NASA. Open source licenses are called open in the way that the software is shipped not only in binary form, but also with the source code that can be modified and recompiled to suit the buyer’s need better. Apache web server and the Linux operating system are free for download, install, run and modify to suit your needs. In this thesis I will discuss whether these licenses can increase the chance of developing a successful product or not, in terms of market shares. / Affärsmodeller kring öppen källkod diskuteras i denna magisteruppats. Det finns ett flertal programvaror byggd på öppen källkod som kan betraktas som framgångsrika om man avser antal användare eller hur stora marknadsandelar produkterna har. Diskussionen i magister uppsatsen kretsar därför om man kan öka sina chanser att utveckla framgångsrika produkter genom att använda sig av öppen källkod främst ur ett företags perspektiv som har vinstintresse. / Mats Nilsson Kabelgatan 13D 414 57 Göteborg

Contractual copyright law The theme of this dissertation is the contractual copyright law. Its main purpose is to describe the most important contractual types in the area of copyright law and the most important changes that Act No. 89/2012 Coll., Civil Code, brought in relation to contractual copyright law as well. The thesis consists of nine chapters. The first chapter contains a brief overview of the most important sources of the contractual copyright law. The second chapter is focused on the copyright law and its specifics and also defines other concepts from the area of intellectual property. The third chapter deals with the impact of recodification of private law on the contractual copyright law. It is about the concrete changes, which influence the contractual copyright law significantly, both directly and indirectly. Besides other things, there are described the changes concerning licence agreement, contract for work, a new conception of a thing and adjustment of principles of the contractual law. The fourth chapter concentrates on the specifics of the transfer of author's right, or the legal prohibition of its transfer respectively. The fifth and the sixth chapter are about the legal regulation of licence agreement. The fifth chapter describes the term of licence in general and some its...

The subject matter of this thesis is to approach prudential requirements for banking activities in the Czech Republic. Taking into account the importance of the banking sector in the economy of each country, this area is widely regulated by directly applicable European legislation, for example by new regulation (EU) No. 757/2013 of the European parliament and of the Council of 26 June 2013 on prudential requirements for credit institutions and investment firms. National regulation is contained mainly in Act No. 21/1992 Coll., on Banks, as amended. Particular chapters of this thesis focus first on general introduction to banking, i.e. a description of the banking systems and institutions operating in them. One part is devoted to the Czech National Bank as the institution of the financial market supervision. The main part describes specific rules of banking activities, beginning with requirements for obtaining a banking license. Finally are mentioned financial safety net and the issue of the doctrine too- big-to-fail. Diploma thesis tries to connect the theory and the legislation with the practical functioning of supervision. For this purpose are used statistical data, certain decisions of the Czech National Bank and information from the Report on the performance of financial market supervision, the...

It is well recognized that there are imperfections in the market for knowledge transfer due to the nature of ideas and inventions. This is consistent with market failures commonly discussed in the economics of information literature. Some of the impediments to efficiency axe examined here in three essays—one empirical, one theoretical, and one case study—all of which share the theme of scientific knowledge movement. The first essay is empirical and measures the systematic effects of direct interaction and geographic distance between university and firm scientists on the economic performance of imported inventions. This study concludes that, with respect to licensing royalties, scientific interaction has an elasticity of approximately 3 at the mean, which is highly robust, and that distance does not have a significant effect after controlling for interaction. This suggests imperfections in the market for know-how that are sensitive to distance. The second essay is a case study of an invention from the area of robotics and control systems and augments the empirical work presented in the previous essay by illustrating specific reasons why interaction was important for the commercialization of one particular early stage invention. The third essay develops a game theoretic model involving the strategic manipulation of incentives by an incumbent to create an 'intellectual property commons' for the purpose of preventing the commercial development of a disruptive technology that would otherwise threaten existing industry margins. The strategy of spoiling incentives to commercialize public sector scientific inventions by eliminating exclusive intellectual property rights—the strategy of the commons—is motivated by a fear of cannibalization and supported by a credible threat. It is shown that the degree of cannibalization to which the new technology exposes the old market is responsible for this market failure. / Business, Sauder School of / Graduate

The thesis entitled "Legal aspects of organizing music events" deals with musical performances from the perspective of organizers, performers, but also the wider public. The aim is to identify the legal issues that must be seen to by the organizer of musical performances and to evaluate the operation and use of the services of collective rights management societies and to evaluate the impact of copyright infringement and attitude of the society to its violation. The introductory chapter provides an overview of the legislation and discusses copyright and certain organizations that work in this field. The second chapter describes the activities of collective rights management companies. Equally important is the third chapter, which deals with license agreements and the different types of licenses. The final chapter applies the theoretical knowledge gained from previous chapters into practice.

This Diploma thesis focuses on copyright law and mainly on the individual legal institutions, licenses and agreements, under which the contractual relationship between the author and the licensee if formulated. In the conclusion, the linking with another branch of law, the execution of a decision, proposes a solution for the author of a work defined by the Copyright Act, regarding the recovery of their claims from a licensee, in case they are not compensated accordingly for providing a license to their work. The aim of this thesis is to process and explain these legal issues in such a way, which will enable even an inexperienced reader to understand the sometimes complex legal texts.