Research on Dictionary Based Compression Encryption Query Scheme
The RDF(Resource Description Framework)compression scheme effectively compresses large RDF datasets,and the RDF en-cryption scheme enhances data security.Combined these two approaches,we propose a dictionary-based compression and encryption query scheme.In this scheme,a dictionary set is constructed by the original RDF dataset for data compression.Then,using the dictionary set,ciphertext ID triplets are generated to achieve data encryption.The dictionary set is stored in a trusted zone,while the ciphertext ID triplets are stored in an untrusted zone.During querying,the keywords in the query statement are first transformed into corresponding ci-phertext keywords using the dictionary set.Then,a query is performed on the ciphertext ID triplets to retrieve data related to the ciphertext keywords.The obtained ciphertext data is transferred to the trusted zone,where decryption and decompression operations are performed to obtain the final plaintext data.By separating the query operations from the decryption and decompression operations,the proposed scheme enhances data security.The querying is conducted only in the untrusted zone,while decryption and decompression are performed in the trusted zone.Finally,a comparison experiment with other RDF encryption schemes is carried out on 5 data sets,and it is proved that the proposed compressed encryption query scheme has a certain improvement in query performance,and verifies that it is feasible and effective.
万方数据
维普
