Fine-grained and controllably redactable blockchain with harmful data forced removal

• Main Authors: HOU, Huiying, HAO, Shidi, YUAN, Jiaming, XU, Shengmin, ZHAO, Yunlei
• Format: text
• Language: English
• Published: Institutional Knowledge at Singapore Management University 2021
• Subjects: Fine grained; Fine-grained control; Formal security analysis; blockchain; Information Security
• Online Access: https://ink.library.smu.edu.sg/sis_research/7563; https://ink.library.smu.edu.sg/context/sis_research/article/8566/viewcontent/3680359_pvoa_cc_by.pdf
• Institution: Singapore Management University

Notoriously, immutability is one of the most striking properties of blockchains. As the data contained in blockchains may be compelled to redact for personal and legal reasons, immutability needs to be skillfully broken. In most existing redactable blockchains, fine-grained redaction and effective d...