A survey on security over data outsourcing

Today´s world business depends on outsourcing the computing and storage. Lack of Security on Data Outsourcing is an important issue and becomes one of the wider areas in the Information science research field. The major challenges of outsourcing the data over un-trusted parties are providing confidentiality, maintaining integrity, Access control of multi- owners data, and user revocation of shared data. This paper addresses the analysis of security over data outsourcing on different concerns like Attribute based encryption (ABE), Key management, Anonymous authentication, User revocation and Access control. ABE is one type of a public key cryptosystem which has its more attraction for encrypting data, user revocation issues and access control particularly in case of data outsourcing. Securing and Managing the keys is as important as securing the data. Anonymous authentication is essential for the special cases where the user may wish to store sensitive data without revealing their identity. This paper surveyed all the different types of techniques used to enhance the security of outsourced data.