Melissa's and Mitchell's E-Voting project for Prof Yener's Fall 2016 Crypto Class
This project uses the UT-Dallas Paillier Encryption library, which is licensed under GPL v3 (https://www.gnu.org/copyleft/gpl.html) and has documentation which can be found at http://cs.utdallas.edu/dspl/cgi-bin/pailliertoolbox/. Additionally all of the source code from this library is paillierp package. Although we really only used the Paillier, PaillierKey, KeyGen, and EncryptionZKP classes from this library.
All of the code that we wrote ourselves is contained in the electronicvoting package. It is split up into 4 subpackages which pertain to the voter, election board, bulletin board, and ballots. The high level use case would be to instantiate a bunch of Voter objects (each with a unique id), and a single election board and bulletin board. The Voters then register with the election board and can cast a ballot in via the election board they are registered with (the ElectionBoard class generates specific blank ballots for its election with a list of candidates it was constructed with). The Voter can then vote by getting a ballot from the ElectionBoard, selecting a candidate, encrypting their vote, getting it blind signed, and then submitting it to the BulletinBoard for counting; all of this work is contained in the Voter.vote() method. The BulletinBoard will then check each vote to make sure it is valid, and count up the encrypted votes. This encrypted count can be submitted to the ElectionBoard (which holds the Paillier Private key) to be decrypted.
A simple example is shown in the main method of the VotingMain class. To run, simply cd into the top level directory of this project and run "javac VotingMain.java" and then "java VotingMain".
We assume that the only mechanism in which someone can vote is though the Voter and Ballot classes that we created.
If you have any questions email Mitchell at [email protected]