A system for implementing search- and retrieval-compatible data
obfuscation includes an annotator that annotates data, metadata, and
relationships thereof that are privacy sensitive according to privacy
policies. The system also includes an indexing server that indexes the
annotated data according to the policies that specify rules for
controlling access to the data. The system also includes an obfuscation
server for serving user requests for data search and retrieval, and
specifies data entitlement and access rights for the users by applying
the privacy policies to user profiles. In response to receiving a search
request from a user, the obfuscation server forwards the search terms in
the request, along with a privacy level determined from a corresponding
user profile and the policies, to a search engine that searches indices
of a database having the privacy level in the request, and returning to
the user only the results which match the search terms and the privacy
level. In response to receiving a data retrieval request, the obfuscation
server retrieves the requested data with annotations from the database,
applies the obfuscation scheme to the annotated data according to the
privacy policies and the user profile, and returns to the user the
obfuscated data in compliance with the privacy policies.