The classifier judged this item not relevant to AI security, so it is left out of lists, feeds, the API and dataset releases. If that is wrong, report a correction on this page.
InfoResearchPeer-reviewed
PRBPR: Privacy-Preserving Redactable Blockchain Supporting Policy Hiding and Revocation
- Published
- Record updated
Summary
The authors propose PRBPR, a privacy-preserving redactable blockchain that supports policy hiding and revocation for secure data sharing. It uses a hierarchical blinding factor to give chameleon hash trapdoors dynamic expiration, enabling batch revocation and resilience against trapdoor leakage, and extends CP-ABE with lightweight inner-product encoding to conceal access policies. The reported experiments show up to 7.7× higher efficiency and a 66.8% reduction in computational cost over existing redactable blockchain approaches.