Privacy is hot topic. Lawyers, technicians and plain people are all concerned by this notion. Nowadays, most discussions focus on the effects of digital tools, such as social media or surveillance software. However, privacy is still ill-defined. Moreover, digital tools which endanger privacy are widely used. Should not we leave privacy aside and accept that we are, maybe more than ever, visible ?In this doctoral thesis, I address this question from a twofold viewpoint. I first inquire into the nature of our digital condition from a philosophical standpoint. I claim that digital artifacts rework the implementation of our frontiers, be them geographical or social. However, I contend that such frontiers are necessary. As I show that code defines the structure and the effects of digital tools, I point out that properties such as privacy management should be addressed right from the conception of software applications.Helping out designers to address such properties is the second issue I tackle. I focus on Service-Oriented Computing as it is a widely used paradigm. Most speci- fically, I deal with the composition of heterogenous and dynamic services. I define access control as an efficient mechanism to protect privacy and I propose a twofold generative approach to secure services compositions. The composition and its access control policies are separately defined at an abstract level. An expert is responsible for each of them. As we promote an abstract description of the application, we free the designer from technical complexity. At runtime, we propose an architecture which selects and protects the actual services by hiding them behind proxies which run the access control policy. Automated model transformations permit to generate the application from its specification. We thus bypass manual programming. We have implemented a modeling and execution environment and applied our approach to a use case in order to validate our work.

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   |texte=   Design and Implementation of privacy in service compositions
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