Blockchain Voting System

Appearance

System Workflow Diagrams ​

This document presents various workflow diagrams illustrating how the Blockchain Voting System operates with ZK privacy and gasless transactions.

1. Data Flow Diagram (DFD) ​

2. Use Case Diagram ​

3. Voting Process Sequence Diagram ​

4. Voter Registration Process Flow ​

5. Election Creation Process Flow ​

6. Vote Casting Process with ZK Privacy ​

Diagram Explanations ​

Data Flow Diagram (DFD) ​

This diagram shows the flow of data between external entities, system processes, and data stores. The key flows include:

  • Voter interactions with the web application
  • Authentication and session management
  • Voting process with ZK proof generation
  • Blockchain relay service for gasless transactions
  • Data storage in various databases

Use Case Diagram ​

This diagram illustrates the various functionalities available to different actors in the system:

  • Voters can authenticate, view elections, cast votes, and view results
  • Administrators can manage elections, candidates, and voters
  • The system internally handles ZK proof generation, blockchain submission, and vote verification

Voting Process Sequence Diagram ​

This diagram shows the step-by-step interaction between components during the voting process:

  1. Voter authentication via email/social
  2. Election viewing with ZK proof generation
  3. Vote submission through backend relay
  4. Blockchain recording with gas payment
  5. Confirmation to voter without blockchain awareness

Voter Registration Process Flow ​

This flowchart shows how voters are registered in the system:

  1. Registration data validation
  2. Semaphore identity generation for privacy
  3. Encrypted private key storage
  4. Blockchain registration for verification

Election Creation Process Flow ​

This flowchart shows how administrators create elections:

  1. Election data validation
  2. Smart contract deployment
  3. Blockchain registration
  4. IPFS storage for election details

Vote Casting Process with ZK Privacy ​

This flowchart shows how votes are cast with privacy protection:

  1. Voter authentication verification
  2. ZK proof generation for eligibility
  3. Blockchain transaction creation and relay
  4. Gas payment by backend
  5. Vote recording with privacy guarantees

These diagrams provide a comprehensive view of how the system works with ZK privacy and gasless transactions while hiding blockchain complexity from users.