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Plausibly Deniable Content Discovery for Bitswap Using Random Walks

, , and . 2024 IEEE 49th Conference on Local Computer Networks (LCN), page 1-9. (October 2024)
DOI: 10.1109/LCN60385.2024.10639726

Abstract

Bitswap is the data exchange protocol for the content-addressed peer-to-peer overlay network IPFS. During content discovery, Bitswap reveals the interest of a peer in content to all neighbors, enabling the tracking of user interests. In our paper, we propose a modification of the Bitswap protocol, which enables source obfuscation using proxies for content discovery. The proxies are selected via a random-walk. Enabling content discovery through proxies introduces plausible deniability. We evaluate the protocol modification with a simulation. The protocol modification demonstrates enhanced privacy, while maintaining acceptable performance levels.

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