Verifiable Phrase Search over Encrypted Data Secure against a Semi-Honest-but-Curious Adversary

摘要

We present an efficient method to carry out verifiable phrase-search over encrypted data in the setting of Semi-Honest-but-Curious (SHBC) cloud storage. In particular, we devise a two-phase protocol that verifies the result from a search of an encrypted phrase. We achieve this by incorporating, with modifications, a verifiable keyword-search technique and a phrase-search method based on work presented in ICC 2012 and ICDCS 2012. We use added verification tags to provide proof of the query results returned from the cloud.