Paper 2024/182

FileDES: A Secure, Scalable and Succinct Decentralized Encrypted Storage Network

Minghui Xu, Shandong University, ETH Zurich
Jiahao Zhang, Shandong University
Hechuan Guo, Shandong University
Xiuzhen Cheng, Shandong University
Dongxiao Yu, Shandong University
Qin Hu, Indiana University – Purdue University Indianapolis
Yijun Li
Yipu Wu

Decentralized Storage Network (DSN) is an emerging technology that challenges traditional cloud-based storage systems by consolidating storage capacities from independent providers and coordinating to provide decentralized storage and retrieval services. However, current DSNs face several challenges associated with data privacy and efficiency of the proof systems. To address these issues, we propose FileDES (Decentralized Encrypted Storage), which incorporates three essential elements: privacy preservation, scalable storage proof, and batch verification. FileDES provides encrypted data storage while maintaining data availability, with a scalable Proof of Encrypted Storage (PoES) algorithm that is resilient to Sybil and Generation attacks. Additionally, we introduce a rollup-based batch verification approach to simultaneously verify multiple files using publicly verifiable succinct proofs. We conducted a comparative evaluation on FileDES, Filecoin, Storj and Sia under various conditions, including a WAN composed of up to 120 geographically dispersed nodes. Our protocol outperforms the others in terms of proof generation/verification efficiency, storage costs, and scalability.

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Published elsewhere. INFOCOM 2024
Decentralized storage networkblockchaindata sharingproof of storagescalabilitySybil attacks.
Contact author(s)
mhxu @ sdu edu cn
202215140 @ mail sdu edu cn
ghc @ mail sdu edu cn
xzcheng @ sdu edu cn
dxyu @ sdu edu cn
2024-02-09: approved
2024-02-07: received
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      author = {Minghui Xu and Jiahao Zhang and Hechuan Guo and Xiuzhen Cheng and Dongxiao Yu and Qin Hu and Yijun Li and Yipu Wu},
      title = {FileDES: A Secure, Scalable and Succinct Decentralized Encrypted Storage Network},
      howpublished = {Cryptology ePrint Archive, Paper 2024/182},
      year = {2024},
      note = {\url{}},
      url = {}
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