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arXiv · 1710.07898

Meta-Key: A Secure Data-Sharing Protocol under Blockchain-Based Decentralised Storage Architecture

Dagang Li·Rong Du·Man Ho Au·Yue Fu
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Abstract

In this letter we propose Meta-key, a data-sharing mechanism that enables users share their encrypted data under a blockchain-based decentralized storage architecture. All the data-encryption keys are encrypted by the owner's public key and put onto the blockchain for safe and secure storage and easy key-management. Encrypted data are stored in dedicated storage nodes and proxy re-encryption mechanism is used to ensure secure data-sharing in the untrusted environment. Security analysis of our model shows that the proxy re-encryption adopted in our system is naturally free from collusion-attack due to the specific architecture of Meta-key.

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Dagang Li, Rong Du, Man Ho Au, Yue Fu. 2017-10-22. Meta-Key: A Secure Data-Sharing Protocol under Blockchain-Based Decentralised Storage Architecture. https://doi.org/10.1109/lnet.2019.2891998

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