International Journal of Advance Research in Science and Engineering (IJARSE)
The advancement in cloud computing has motivated the data owners to outsource their data management systems from local sites to commercial public cloud for great flexibility and economic savings. But people can enjoy full benefit of cloud computing if they are able to address very real privacy and security concerns that come with storing sensitive personal information. For real privacy, user identity should remain hidden from CSP (Cloud Service Provider) and to protect privacy of data, data which is sensitive is to be encrypted before outsourcing. Thus, enabling an encrypted cloud data search service is of great importance. By considering the large number of data users, documents in the cloud, it is important for the search service to allow multi keyword query and provide result similarity ranking to meet the effective need of data retrieval search and not often differentiate the search results.