A Pre-Authentication Approach to Proxy Re-encryption in Big Data Context

Abstract-In the first place,Big Data growing amount of data, the demand of big data storage significantly increases. Through the cloud center, data providers can conveniently share data stored in the center with others. However, one practically important problem in big data storage is privacy Cloud computing.In addition, matter of fact,sharing process, data is encrypted to be confidential and anonymous. Such operation can protect privacy from being leaked out. In contrast,To satisfy the practical conditions,at the same time, data transmitting with multi receivers is also considered. Further more, this paper proposes the notion of pre-authentication for the first time,In spite of,only users with certain attributes that have already. The pre-authentication mechanism combines the advantages of proxy conditional re-encryption multi-sharing mechanism with the attribute-based authentication technique,important to realize, achieving attributes authentication before re-encryption,for this reason,ensuring the security of the attributes and data. under those circumstances,As a result,proves that the system is secure and the proposed Cloud computing pre-authentication mechanism could significantly enhance the system security level.