UMD Theses and Dissertations

Permanent URI for this collectionhttp://hdl.handle.net/1903/3

New submissions to the thesis/dissertation collections are added automatically as they are received from the Graduate School. Currently, the Graduate School deposits all theses and dissertations from a given semester after the official graduation date. This means that there may be up to a 4 month delay in the appearance of a given thesis/dissertation in DRUM.

More information is available at Theses and Dissertations at University of Maryland Libraries.

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Author: search.filters.author.Lynton, CiaraSubject: search.filters.subject.Encryption

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    ANALYZING USER TRADEOFFS FOR ENCRYPTED EMAIL SERVICES
    (2018) Lynton, Ciara; Papamanthou, Charalampos; Electrical Engineering; Digital Repository at the University of Maryland; University of Maryland (College Park, Md.)
    Securing online communication, especially in email settings, is challenging. End-to-end encryption achieves maximal security; however, introducing search capabilities is complicated, potentially making it impractical for email. One option is to locally decrypt and index emails to incorporate search, but this requires significant client-side storage. Encryption that is searchable at the server-side limits local storage, but requires other compromises as well. This thesis presents a study using conjoint analysis to understand user tradeoffs related to email features in order to propose a solution for providing usable, yet secure, email service. The results suggest that while it is ideal to have maximum privacy, users rely heavily on the features present in standard insecure email services. Furthermore, with about half of the participants reporting local device storage as a concern, searchable encryption could be a feasible secure email service solution for some users.