Seal

Seal brings onchain access control and threshold encryption to developers, providing a secure and flexible way to manage sensitive data, whether it's for encrypted storage, gated content, private messaging, or beyond!

Why Seal?

A ton of Web3 apps need secure data access — whether for encrypted storage, gated content, private messaging, and more. Right now, options are:

• Web2 solutions (AWS KMS, GCP Cloud KMS)
• Niche Web3 products (wallet-specific encryption or purpose-specific privacy tool)

Seal offers a generalized, decentralized alternative that integrates easily with any app or protocol, without sacrificing flexibility or security.

How it Works

• Onchain Access Control

Seal uses smart contracts written in Move to define flexible decryption policies, determining exactly who gets access to data and when.

• Threshold Encryption

Encryption keys are never stored in a single place. Instead, trust is distributed across a network of Seal key store services, eliminating single points of failure.

• Client-Side Encryption

Data is encrypted and decrypted locally by users, ensuring that sensitive information remains private.

• Storage Agnostic

Seal doesn't care where data is stored, it works with any storage layer, including decentralized storage solutions like Walrus.

What This Enables

With Seal, developers can build:

• Protect user data without relying on centralized key management
• Gate content for creators, NFT owners, DAOs, or private communities
• Secure private messaging for dApps
• Enable time-locked asset transfers with encryption-based handovers

Built for Builders

• Seal is designed to be plug-and-play. With the SDK, developers get:
• Scalability — Threshold encryption = no single point of failure
• Transparency — Onchain access controls
• Flexibility — Policies work across use cases

Example use cases

• Gated content — Monetize premium content on-chain
• Game logic — Encrypted assets and gated story progression
• Web3 messaging — End-to-end encrypted chats
• Secure NFT transfers — Set time-locks or dynamic access rules