在電子投票系統中，投票者於投票過程不受時間與地點限制，且可減少開票與計票過程花費之人力與時間資源，解決傳統投票的缺點，使用電子投票必為未來之趨勢。電子投票系統欲取代傳統紙本投票，就必須滿足傳統紙本投票的安全與操作需求，其中以保護投票者的身分為此機制的設計關鍵。
本研究提出一個基於模糊簽章與時間戳記之電子投票系統，且本系統可多選候選者(t-out-of-n choices)，只要改變t值就可讓投票者選擇1至t位候選者，使電子投票機制更加彈性，並滿足不可偽造性Unforgeability)、可驗證性(Verifiability)、正確性(Correctness)、公平性(Fairness)、匿名性(Anonymity)、隱私性(Privacy)等安全需求。

In the e-voting system, voters in the voting phase will not restrict to time and place, and it can reduce resource waste in the counting ballots. The e-voting system solves the problems of traditional voting system, for example, the voting center wastes time and human resource to count ballot, and it offers a more convenient way to voting. Use e-voting system is future trends. In order to replace the traditional voting system, the e-voting system must satisfy all security and operational requirements of traditional voting system, and the protection of voter’s identities is an important design issue.

We process an e-voting system based on oblivious signatures and timestamp, and voters can choice multiples candidates in this system (t-out-of-n choices). As long as the e-voting system changes the value of t, it can let voters choose 1 to t candidates, this feature make the e-voting mechanism more flexible. Our e-voting system also satisfies security requirements, such as unforgeable, verifiability, correctness, fairness, and anonymity.

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