An Encrypted Index Mechanism in Ciphertext Retrieval System

The cipher text-based full-text retrieval technology is proposed to satisfy the pressing demands for high security in massive information sharing applications. Based on the analysis of general technology of full-text indexing, we propose an improved index structure that supports cipher text indexing and retrieval. Then we present approaches to construct, maintain and retrieve cipher text indexes. Meanwhile, we implement a cipher text-based full-text retrieval system, which allows full-text search on the encrypted documents in multiple formats without decryption. Finally, we carry out the experiments and evaluate the performance of cipher text index construction and retrieval.