https://github.com/unitychain/zkvote-node

Using ZK-SNARK to Implement Decentralized Anonymous Voting on p2p Network
https://github.com/unitychain/zkvote-node

dht golang kademlia libp2p p2p zero-knowledge-proofs zkp

Last synced: about 2 months ago
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Using ZK-SNARK to Implement Decentralized Anonymous Voting on p2p Network

• Host: GitHub
• URL: https://github.com/unitychain/zkvote-node
• Owner: Unitychain
• License: mit
• Created: 2019-11-18T03:51:49.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2020-06-08T10:28:40.000Z (almost 6 years ago)
• Last Synced: 2024-06-21T08:51:01.889Z (almost 2 years ago)
• Topics: dht, golang, kademlia, libp2p, p2p, zero-knowledge-proofs, zkp
• Language: Go
• Homepage:
• Size: 88.5 MB
• Stars: 13
• Watchers: 5
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# zkvote: Using ZK-SNARK to Implement Decentralized Anonymous Voting on p2p Network

**zkvote** is a powerful tool for anonymous voting. It uses a cryptographic function called a ZK-SNARK to keep the voter from revealing its identity. It is also built on a peer-to-peer network so that no single entity or authortity can control the access or result of the voting. Moreover, zkvote utilizes a developing standard called Decentralized Identifier (DID) and Verifiable Credential (VC) to prove the validity of the identity.

## How it Works?

![](https://i.imgur.com/RAAnWn8.png)

1. **Generate keypair**

    - Use `zkvote-web` to generate keypair / DID / identity commitment

    - Doesn't support import at this moment

    - Store in browser localStorage

2. **Propose/Join**

    - Proposer

        - Use `zkvote-web` to propose a new subject to be voted on

    - Joiner

        - Use `zkvote-web` to join an existing subject

3. **Exchange VC**

    - Joiner sends its identity commitment to proposer via other network

      - For example: email, SMS...

    - Proposer receives the identity commitment of the joiner from the network

    - Proposer generates a verifiable credential (VC) for joiner and sends it to joiner. This VC includes:

        - Subject hash

        - identity commitment of joiner

        - Signature of issuer

        - public key of issuer

    - Joiner receives the VC

4. **Vote**

    - Proposer

        - Generates the proof that corresponds to the subject

        - Uploads the proof and the VC to `zkvote-node`

    - Joiner

        - **Verify the VC for the subject**

        - Generates the proof that corresponds to the subject

        - Uploads the proof and the VC to `zkvote-node`

5. **Open**

    - Use `zkvote-web` to see the latest result

## Contribution

See [this document](https://hackmd.io/@juincc/B1QV5NN5S) for more technical details