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- W3199453016 abstract "In the traditional blockchain system, data is public and cannot be redacted. With the development of blockchain technology, the problem that the data cannot be altered will be more serious once it is written on the chain. Recently, some redactable blockchain schemes have been proposed. However, most of the schemes are based on the public blockchain, and the users’ identities and transaction data may be disclosed. To solve the problem of privacy disclosure, we propose a privacy-preserving transaction-level redactable blockchain. In the proposed scheme, symmetric encryption and ring signature are used to protect transaction data and the users’ identities, respectively. In order to prove the legality of data redaction, the transaction sender can reveal the invalid users’ identities and transaction data in an anonymous environment. To construct a transaction-level redactable blockchain, the users only need to replace a single transaction to complete the data redaction instead of replacing the entire block. The experimental results show that the proposed scheme saves 20% of the redaction time compared to the previous privacy-preserving blockchains, so the redaction efficiency is higher." @default.
- W3199453016 created "2021-09-27" @default.
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- W3199453016 date "2021-09-18" @default.
- W3199453016 modified "2023-10-15" @default.
- W3199453016 title "Privacy-Preserving Redactable Blockchain for Internet of Things" @default.
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- W3199453016 doi "https://doi.org/10.1155/2021/4485311" @default.
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