NuLink Privacy Wallet SDK & Infrastructure

Overview

NuLink provides comprehensive wallet-as-a-service infrastructure through developer SDKs and a web-based privacy wallet platform, enabling seamless integration of privacy-preserving wallet functionality into Web3 applications. The solution reduces onboarding friction while providing enterprise-grade privacy features without requiring deep cryptographic expertise.

NuLink Agent SDK

The NuLink Agent SDK is a comprehensive software development kit that bridges communication between DApps and the NuLink Agent, providing essential tools for building privacy-preserving applications.

Seamless Integration: The SDK enables DApps to communicate directly with the NuLink Agent, which acts as a web-based digital wallet and intermediary for handling privacy-sensitive data requests. Developers can integrate the SDK into browser-based or Node.js runtime environments.

Developer-Friendly APIs: The SDK offers intuitive JavaScript/TypeScript APIs including connect(), uploadData(), uploadFile(), apply(), approve(), and download() functions that handle complex cryptographic operations behind simple interfaces. These APIs manage user authentication, wallet connection, encrypted data operations, access control workflows, and secure data retrieval.

Multi-Chain Support: The SDK supports multiple blockchain networks including Horus (BSC Testnet) with Chain ID 97 and Conflux eSpace Testnet with Chain ID 71, integrating with NuLink backend services, staking services, and porter services to provide complete privacy infrastructure.

NuLink SDK for Direct Integration

For developers requiring deeper control, the NuLink SDK allows performing fundamental privacy operations directly within DApps without relying on external components.

Core Components:

• NulinkHDWallet: Interfaces for wallet creation, management, and cryptographic key handling
• AccountManager: Manages multiple Account objects and provides account lifecycle management
• Account: Handles account-specific cryptographic operations and data management
• Strategy Module: Encrypts user files using private keys with core cryptographic strategies
• Functions Module: Provides interfaces for file encryption, uploading, and blockchain interaction

Advanced Capabilities: The SDK enables endpoint encryption where data is encrypted immediately at the source, proxy re-encryption for secure sharing without exposing plaintext, blockchain-based access control and permission management, and integration with decentralized storage solutions.

Deployment Flexibility: Available via npm as @nulink_network/nulink-sdk, the toolkit can be easily integrated into existing JavaScript/TypeScript projects with configurable network parameters, backend server addresses, and Web3 RPC URLs to match deployment requirements.

NuLink Agent - Web-Based Wallet Platform

NuLink Agent serves as the execution environment for privacy operations, providing a hassle-free web-based wallet experience that eliminates the need for browser plugins.

Privacy-Preserving Data Management: Users can encrypt and store data securely with decentralized storage, share encrypted data with granular access control, manage digital assets and private account information, and control who can access their sensitive data regardless of where it's stored.

Blockchain Integration: Every transaction and operation is recorded on-chain, ensuring transparency and immutability. The Agent supports multiple blockchain networks and tokens, providing flexibility for managing various digital assets within a single interface.

Security Features: Enterprise-level security measures including advanced encryption for all data at rest and in transit, decentralized storage of account data to prevent single points of failure, endpoint encryption where data never leaves the user's device without authorization, and cryptographic access control using Proxy Re-Encryption and Attribute-Based Encryption.

Use Cases

The NuLink wallet infrastructure empowers various privacy-preserving applications:

• Encrypted NFT marketplaces with privacy-preserving trading features
• Electronic health record sharing systems with granular access control
• Decentralized social networks with end-to-end encrypted messaging
• Privacy-first identity and authentication systems
• Enterprise data sharing and collaboration tools
• Any DApp requiring secure data sharing and user-controlled privacy

With comprehensive documentation, demo applications, and active community support through Discord and GitHub, NuLink provides the easiest path for developers to add enterprise-grade privacy wallet features to their Web3 applications.