Abstract:Immutability and traceability are the main reasons for the popularity of blockchain. Nevertheless, its transparency also makes the transactions visible to all participants, which seriously violates the privacy of some dealers. In order to transfer accounts over blockchain, all verifiers should be empowered with the ability to confirm the transactions, leading to the conflict between extensive consensus and individual privacy. Orienting to privacy issues of UTXO (Unspent Transaction Output), this paper exploite… Show more
“…At the same time, with properties of decentralization, traceability, and immutability, blockchain technology has been widely explored to promote data trust, sharing, co-governance, and co-maintenance [3][4][5][6][7][8][9][10][11][12]. With the help of blockchain technology, the trusted third party in the data sharing protocol is replaced by a public ledger maintained by all users.…”
In order to catch the express train of the digital age and seize the opportunities brought by the development of blockchain technology, many government departments have begun to build blockchain-based data sharing protocols. Most existing data sharing protocols are built on different blockchains with different specific features. The interaction between them is not trivial, leading to the phenomenon of “data islands.” Therefore, we consider building a data sharing protocol compatible with various blockchains. In this work, we propose a generalized blockchain-based data sharing protocol, which takes fairness, privacy, auditability, and generality into account simultaneously. With adaptor signature and zero-knowledge techniques, the proposed protocol ensures a secure and fair data sharing process and is compatible with various blockchains since it only requires the underlying blockchain to perform signature verification. Finally, we implement our construction on an Ethereum test network and conduct a series of experiments. The results demonstrate the practicality of our construction while remaining good functionalities.
“…At the same time, with properties of decentralization, traceability, and immutability, blockchain technology has been widely explored to promote data trust, sharing, co-governance, and co-maintenance [3][4][5][6][7][8][9][10][11][12]. With the help of blockchain technology, the trusted third party in the data sharing protocol is replaced by a public ledger maintained by all users.…”
In order to catch the express train of the digital age and seize the opportunities brought by the development of blockchain technology, many government departments have begun to build blockchain-based data sharing protocols. Most existing data sharing protocols are built on different blockchains with different specific features. The interaction between them is not trivial, leading to the phenomenon of “data islands.” Therefore, we consider building a data sharing protocol compatible with various blockchains. In this work, we propose a generalized blockchain-based data sharing protocol, which takes fairness, privacy, auditability, and generality into account simultaneously. With adaptor signature and zero-knowledge techniques, the proposed protocol ensures a secure and fair data sharing process and is compatible with various blockchains since it only requires the underlying blockchain to perform signature verification. Finally, we implement our construction on an Ethereum test network and conduct a series of experiments. The results demonstrate the practicality of our construction while remaining good functionalities.
“…Tis article has been retracted by Hindawi, as publisher, following an investigation undertaken by the publisher [1]. Tis investigation has uncovered evidence of systematic manipulation of the publication and peer-review process.…”
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