A CloudKeyBank: Privacy and Owner Authorization Enforced Key Management Framework

With the limited computing power cloud permit users to outsource their data. However, a security issue has been always obstacle to the use of computing outsourcing. Recently, there is huge growth in the use of number of security passwords for web based application and encryption keys required to securely outsource the data. User encrypts the data using encryption before uploading it on cloud and provides access rights to the other user i.e. shared data with other authorized users of cloud. While uploading data to the cloud data owner also have to outsource their password and data encryption keys to CSP. Such outsourcing of password and encryption keys attracts attention of many users with security and privacy point of view. Users don’t have fully trust on CSP as they don’t have guidance of how to access and manage user’s keys. This is the main reason behind that user worried to outsource their important information on cloud. Previously existed systems are not much intelligent to preserve data integrity, privacy policy of searching etc. To make efficient management of user private data as well as to securely preserve user’s data encryption keys on cloud there is need of such system which provides the guarantee of security and privacy to the end user for their outsourcing data and for proper key management. Bloom filter is space-efficient probabilistic data structure designed to specify whether an element is present or not in the set. It is rapid and memory efficient strategy which we contribute in our proposed work. It can save search space and time of searching as it does not require too many transactions to the database as frequent data stored in cache.