Enable Central Keyword Base Semantic Search using UserLevel Encryption Extension Model

Abstract

A cloud system is difficult to synchronize login and authentication data between external clouds and internal systems without exposing internal security data. The cloud technologies are rapidly being adopted throughout the Information Technology (IT) due to their various attractive properties. In spite of their spread, they have raised a range of significant security and privacy concerns which interrupt their adoption in sensitive environments. In existing scheme makes a good tradeoff between the functionality and the efficiency. To better express the relevance between the query and files, we introduce the TF-IDF rule into our design.