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MPC Core Kit

The MPC Core Kit is designed for applications that need advanced security and complete control over their authentication flows. It provides the necessary tools and flexibility to build sophisticated authentication systems while maintaining high security standards.

How MPC Core Kit Works​

Using the Web3Auth MPC Core Kit, you can authenticate users and generate signatures for blockchain transactions through distributed key shares, without ever reconstructing the private key. The SDK uses a 2-of-3 threshold signature scheme where the key shares are distributed across:

  • Auth Network Share: Managed by Web3Auth's decentralized Auth Network and accessible through OAuth providers like Google, providing a familiar authentication experience.

  • Device Share: Securely stored on the user's device, leveraging platform-specific security features like biometric authentication on mobile devices.

  • Recovery Share: A backup share that can be stored on a secondary device, downloaded for offline storage, or derived from user input like passwords or security questions.

To sign transactions, users need access to any two of these three shares. The shares independently create partial signatures which are then combined using TSS to create the final valid signature.

This diagram describes the relationship between the Web3Auth SDK and integrating application
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To learn more about MPC Core Kit architecture, visit mpc infrastructure documentation

Key Features​

  • Uncompromised Security: Private keys are never reconstructed, eliminating key compromise risks through distributed MPC architecture.

  • Seamless Integration: Build end-to-end authentication flows directly in your application with complete UI/UX control.

  • Enterprise-Grade Infrastructure: Non-custodial MPC wallet infrastructure with automated recovery mechanisms ensures maximum security and reliability.

  • Flexible Authentication: Support for social logins, passwordless methods, and existing auth systems provides comprehensive authentication options.

  • Developer-First Design: Direct integration capabilities and customizable interfaces enable building sophisticated authentication flows that match your brand.

Get Started with MPC Core Kit SDKs​

MPC Core Kit JS SDK

Designed for projects that require a tailored approach to authentication, providing the tools and flexibility necessary to build advanced, secure, and integrated authentication systems.

Works for Web & NodeJS environments.

MPC Core Kit React Native SDK

Designed for projects that require a tailored approach to authentication, providing the tools and flexibility necessary to build advanced, secure, and integrated authentication systems.

Works for React Native & Expo environments.