VoteXX is the first election system that has “extreme coercion resistance”. This project aims at implementing a prototype of VoteXX.

Disclaimer: This code is not production ready.

The extended abstract of the paper can be found here.

Main features of VoteXX:

• End-to-end Verifiable
• Privacy
• Extreme Coercion-resistant (voter can nullify his voter even if the coercer knows all the secret information)

Roles of VoteXX:

• Voter
• Election Authority: responsible for authenticating voters
• Trustees: respondible for tallying
• Hedgehog: can nullify a voter's ballot if the voter cast the ballot under coercion

The library implements four core building blocks of VoteXX in JavaScript:

• protocol/DKG/: A simple DKG protocol (see Simple_DKG.md)
• protocol/MIX_AND_MATCH/: The mix and match protocol based on Jakobsson and Juels's proposal
• protocol/NIZKs/verifiable_shuffle/: The shuffle argument based on Bayer and Groth's proposal
• protocol/NIZKs/nullification.js: The novel succinct NIZK for nullifying a ballot

• example/ includes the examples of running the four protocols.
• Run protocol/NIZKs/benchmarks/benchmark.js to evaluate the nullification NIZK.

Dependencies:

• MongoDB
• npm
• node

npm install
node server.js

This will start a server running on http://localhost:3000.

• Do the cryptographic operations in the frontend (right now they are done in the backend).
• Correct the shuffle argument for shuffling a vector of ciphertexts.
• Add shuffle arguments in the mix and match protocol.
• Store the bulletin board in the database (right now it is stored in the memory).
• Support verifying the election using browser.
• Support any number of trustees.
• Support elegible voter list (right now everyone can vote).
• Change an alert to a beautiful BootStrap modal.
• Support "forget password".
• Support GitHub/Gooble login.
• Optimize the shuffle argument.
• Trustees do mix and match instantly when a nullification request arrives.