Sui Extension

smart contracts for Hash Time-Locked Contracts (HTLCs) in Move for the Sui Blockchain, demonstrating 1inch Fusion+ swaps from Ethereum to Move. We used the cross-chain-resolver example as base, and used the HTLC contract for atomic cross chain swaps.

We used Next and Pnpm and Move

This is a cross-chain atomic swap solution that extends 1inch Fusion+ to support swaps between Ethereum and Sui blockchains. The project demonstrates how to implement secure, trustless cross-chain transactions using Hash Time-Locked Contracts (HTLCs) in Move.

Frontend: Next.js 14 application with modern UI components (Shadcn UI + Tailwind CSS) that provides a seamless user experience for cross-chain swaps. Users can connect both MetaMask (Ethereum) and Sui Wallet to initiate swaps.

Smart Contracts:

• Ethereum: Solidity escrow contracts using the 1inch Cross-Chain SDK with resolver patterns for automated execution
• Sui: Move language HTLC contracts (oneinch_move module) that handle lock/unlock mechanisms with time-based constraints

Key Technical Features

1. Atomic Swap Security: Uses cryptographic secrets and hash locks to ensure either both sides of the swap complete or both fail
2. Cross-Chain Communication: Bypasses 1inch SDK chain validation limitations while maintaining security guarantees
3. Dual Wallet Integration: Seamless integration with both Ethereum (Wagmi/Viem) and Sui (Sui TypeScript SDK) wallets
4. Real-time Tracking: Complete order lifecycle monitoring with status updates and transaction confirmations
5. Mock Fusion+ API: Realistic simulation of 1inch Fusion+ endpoints with proper timing, cryptographic operations, and state management

Swap Flow Process

Phase 1: Quote generation and EIP-712 order creation with cryptographic secret generation Phase 2: Escrow deployment on both chains with safety deposits and timelock mechanisms Phase 3: Secret revelation and atomic claim/withdrawal process ensuring trustless execution