The introduction of Cloud computing concept has
been instrumental in reducing resource unavailability in cyber
world. Privacy of data stored in cloud resources though is a
debatable subject and a matter of concern. As the number of
documents stored on cloud resources increase, a search engine
will have to be employed to search for information. Due to
increased concern on these search engines itself misusing data,
users are apprehensive about treating cloud resources as a data
storage medium. Through this project we try to improve the
security in cloud computing by introducing encryption of count
list, as well as documents. The search is performed with the
hashed keywords. Limitations in cloud computing are addressed
by maximizing the utilization of cloud computing resources.
Keywords— privacy, cloud, fully homomorphic encryption,
similarity based retrieval, keyword search.