Xiao Yang, Zhi Dong. Final Design Presentation. Overview of Design Server Client Voters Subclasses of voters votes.

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Presentation transcript:

Xiao Yang, Zhi Dong. Final Design Presentation

Overview of Design Server Client Voters Subclasses of voters votes

Registration （ Proxy, Singleton ）

Authentication （ Proxy ）

Voter Factory

Ballot Factory （ Factory, Composite, Chain of Responsibility ）

Voting

Anonymized Voting Using a token based method After the local ballot received the name and voting time, then it generates a token which is stores in database, where token is not able to be inferred. As some revote happen, it looks up for the record in database based on the token. Subtract 1 from the previous candidates vote number, add 1 on the changed candidate’s vote number.

Return results

Information Updated(Observer)

Database Singleton

Overview of Design continued

Questions?