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Fuma Nama d9a51ed298 refactor(fhe): unify API - reveal() replaces getDecryptResult()

- Update to unified FHE decryption API
- Update dependencies to @luxfi/contracts
- Note: TypeScript types pending for @luxfhe/sdk/web

2025-12-31 21:12:09 -08:00

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🔐 FHE Rock Paper Scissors

A fully homomorphic encryption (FHE) implementation of Rock Paper Scissors using CoFHE and Scaffold-ETH 2.

Overview

This project demonstrates how to build a privacy-preserving Rock Paper Scissors game using Fully Homomorphic Encryption (FHE) on the luxfhe blockchain. Players' choices remain encrypted throughout the game, ensuring complete privacy.

Key Features

🔐 End-to-End Encryption: Player choices are encrypted using FHE
🎮 Real-Time Gameplay: Interactive UI for creating and joining games
💰 ETH Betting: Support for betting with ETH
🔍 Transparent Results: Clear display of game outcomes while maintaining privacy
🛠 Built with CoFHE: Leverages luxfhe's CoFHE for on-chain FHE computation

Screenshots

Technical Stack

Smart Contracts: Solidity 0.8.25 with CoFHE
Frontend: Next.js, React, TailwindCSS
Blockchain: luxfhe (Sepolia & Arbitrum Sepolia)
Development: Hardhat, TypeScript
Web3: Wagmi, Viem

Getting Started

Prerequisites

Node.js (>= v20.18.3)
Yarn
Git

Installation

Clone the repository:

git clone https://github.com/luxfheProtocol/rps-fhe-scaffold-example.git
cd rps-fhe-scaffold-example

Install dependencies:

yarn install

Start a local network:

yarn chain

Deploy the contract:

yarn deploy

Start the frontend:

yarn start

Visit http://localhost:3000 to start playing!

How It Works

Game Creation: Players can create a new game by specifying a bet amount
Joining Games: Other players can join existing games by matching the bet amount
Making Moves: Players submit their choices (Rock, Paper, or Scissors) which are encrypted using FHE
Revealing Results: Once both players have submitted their moves, the game creator can reveal the winner
Prize Distribution: Winners receive the prize pool (2x bet amount)

Development

Smart contracts are in packages/hardhat/contracts
Frontend components are in packages/nextjs/app
Tests are in packages/hardhat/test

License

This project is licensed under the MIT License - see the LICENSE file for details.

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