PRNG-in-Blockchain-based-E-lottery-System

Organization of files:

• Folder name: Paper 1
  • Implementation of "Design of Blockchain Lottery for Thai Government" extension (link: https://www.researchgate.net/publication/330223692_Design_of_Blockchain_Lottery_for_Thai_Government) .
  • Files: Lottery_Thai.sol, test_data.txt
• Folder name: Paper 2
  • Implementation of "Lottery DApp from Multi-Randomness Extraction" extension (link: https://ieeexplore.ieee.org/document/8751323).
  • Files: Lottery_Dapp.sol, test_data.txt

Running instructions:

Tools Setup:

1. Install ganache:

   • Download from: https://github.com/trufflesuite/ganache/releases
   • (for windows:) Download Ganache-2.1.1-win-setup.exe
   • Install and run.
   • Once ganache GUI is running go to
     • setting (setting button) -> CHAIN -> set gas limit 10000000
     • setting (setting button) -> ACCOUNTS & KEYS -> set the mnemonic "wine school heavy thought bomb awkward acquire urban bulk aware high true"
     • Restart ganache (by pressing the restrat button on top right)

2. Go to https://remix.ethereum.org/

   • Load the files.
     • For paper 1: Lottery_Thai.sol
     • For paper 2: Lottery_Dapp.sol
   • Set the compiler version to version:0.4.26+commit.4563c3fc
   • For paper 1: select the Lottery_Thai.sol file first. Next, set "lottery name" and press the Start to compile button in remix.
   • Once the compilation is done, switch to Run tab in remix.
   • In the run tab:
     • Environment: Web3 Provider
       • A pop up will appear, select ok.
       • Set Web3 Provider Endpoint: http://localhost:7545 (it will connect remix with ganache)
     • Gas limit: set 10000000.
     • Then select the Election contract from the drop down option and press deploy.
     • (For paper 2) Select the Lottery_Dapp.sol file first. Then set "lottery Name" during deployment
       • Once deployed all the functions of the smart contract will become visible under "Deployed Contracts".

Testing: (Paper 1)

1. Open the "test_data" file.
2. Use the provided data in order to test the execution.
3. Copy and paste the data provided for each function to the deployed functiones in remix (inside the Lottery_Thai contract under "Deployed Contracts").
4. For lottery buyers use the registerd accounts (by switching the accounts under Run tab in remix).
5. To get the execution cost:
   • From ganache: Switch to Transactions tab and see "GAS USED"

Testing: (Paper 2)

1. Open the "test_data" file.
2. Use the provided data in order to test the execution.
3. Copy and paste the data provided for each function to the deployed functiones in remix (inside the Lotter_Dapp contract under "Deployed Contracts").
4. For lottery buyers use the registerd accounts (by switching the accounts under Run tab in remix).
5. To get the execution cost:
   • From ganache: Switch to Transactions tab and see "GAS USED"

PRNG: RANDAO Commit-Reveal Scheme

Environment: java 9.0.1 above

1. Open terminal or command prompt

2. Compile the code: In the folder directory: javac *.java

3.Run the code: In the folder directory: java Test (number of participate)

4. Get the output

NIST Python files are from: https://github.com/GINARTeam/NIST-statistical-test

Output: