Harpocrates: Privacy-Preserving and Immutable Audit Log for Sensitive Data Operations. (arXiv:2211.04741v1 [cs.CR])

The audit log is a crucial component to monitor fine-grained operations over
sensitive data (e.g., personal, health) for security inspection and assurance.
Since such data operations can be highly sensitive, it is vital to ensure that
the audit log achieves not only validity and immutability, but also
confidentiality against active threats to standard data regulations (e.g.,
HIPAA) compliance. Despite its critical needs, state-of-the-art
privacy-preserving audit log schemes (e.g., Ghostor (NSDI '20), Calypso (VLDB
'19)) do not fully obtain a high …

audit data log operations privacy sensitive data