@MASTERSTHESIS\{IMM2014-07069, author = "A. Andrijauskas", title = "Client Side Encryption for Soonr Cloud Service and Secure Key Distribution", year = "2014", school = "Technical University of Denmark, Department of Applied Mathematics and Computer Science", address = "Richard Petersens Plads, Building 324, {DK-}2800 Kgs. Lyngby, Denmark, compute@compute.dtu.dk", type = "", note = "{DTU} supervisor: Christian D. Jensen, cdje@dtu.dk, {DTU} Compute", url = "http://www.compute.dtu.dk/english", abstract = "Data privacy depends on the honesty of the source that has to be trusted during storage and/or exchange of said data. Users choose {ISP,} servers for storage and solutions to store data. The choices are based on a combination of functionality and credibility. An alternative is to decrease the need to trust an outside source for data management and give the user more control over it. This thesis presents an analysis of currently existing state of the art methods and tools for securing data, provides considerations for the choices made, details the implementation and analyses the results. Current problems are analyzed in addition to the tools and appropriate considerations for solutions are given. The project is performed in collaboration with “Soonr” - an external company, which is specializes in dealing with confidential data around the world. The company was founded in 2005 and deals with data from more than 150,000 companies worldwide. The project includes changes to part of their code to support additional features. The changes are analyzed to display how well they follow the outlined requirements. The information regarding the company’s data is disclosed to the extent needed to carry out the analysis of the implementation. A key management solution is designed, implemented and analyzed to fulfil its’ part of the requirements." }