الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
The voting process is the cornerstone and key feature of any democratic society. Despite the controversies and criticism surrounding electronic voting (e-voting). Electronic voting systems are rapidly overtaking the more old-fashioned paper-based voting system (PVS) that comes with big administrative effort, consumes long time (due to low tally speed) and huge money. There have been various experiments performed with different methods aiming to raise participation and allow automated rapid counting of votes. In this thesis we propose a new voting scheme based on scratch cards (SC); a practical, simple, appealing, secure, anonymous and end to end verifiable voting protocol that supports multiple modalities. Our new scheme does not require a special voting channel where communications can occur completely over the existing Internet through common public technology used daily by people to charge their mobile phones without the need to special machinery. The participants are not required to physically move to the polling stations as the system provides location-independent voting, that enables voters to cast their votes even from their own homes. Moreover, votes are tallied automatically and correctly, giving quick accurate results, reducing manual efforts. The proposed system is easy to implement and is independent of the underlying cryptographic components. The system relies on; a very efficient and collision-free secure hash function that makes it difficult to link vote to a voter. A Random Number Generator (RNG) randomly produces the ballots unique numbers and standard Secure Socket Layer (SSL) protocol to secure the communication traffic between the client and the server. The proposed protocol; is costeffective, meeting most of the essential requirements, allowing a voter to cast his/her ballot anonymously via the Internet. The system allows voter to cast his/her vote via SMS messages over GSM network or via IVR through landline of a complete separation between identification and vote cast. Experiments, done on a sample of 1200 voters, proved that it meets the requirements necessary for a practical e-voting system that is unbiased, secure and perhaps the most important, worry-free. Keywords: Electronic voting, Remote voting, SMS voting, IVR voting and verifiable voting.