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Your browser tab could become encrypted storage for someone else’s files

Researcher Gregory Magarshak has introduced Safecloud, a decentralized storage network that utilizes browser-based nodes to store encrypted file chunks while ensuring data privacy through a unique key-derivation architecture.

Key Points

  • Safecloud splits files into encrypted chunks stored within browser-based "Drops" using IndexedDB, while "Jets" act as routing servers to manage retrieval.
  • The system employs a triple-tree structure—Merkle, key-derivation, and access trees—to simultaneously verify data integrity, manage decryption, and authorize user access.
  • A native token called Safebux incentivizes storage and routing, with payment security enforced through the OpenClaiming Protocol to prevent replay attacks.
  • The architecture supports efficient media streaming by allowing users to grant access to specific file segments or chapters using individual range keys.
  • Current development has finalized the encryption and integrity layers, while the proof-of-storage and payment verification mechanisms are currently being integrated.

Why it Matters

This architecture offers a more cost-effective alternative to existing decentralized storage solutions by eliminating the need for resource-intensive "sealing" processes. By leveraging browser-native storage, it provides a scalable framework for private, verifiable data hosting that could significantly lower the barrier for decentralized cloud applications.
Help Net Security Published by Mirko Zorz
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