A Survey on Data Security Using File Hierarchy Attribute-Based Encryption in Cloud Computing Environment

Cloud computing has formed the conceptual and infrastructural basis for the modern world. Almost all
organizations are looking for the ways to decrease the cost and complexity of providing an IT infrastructure. Many
organizations frequently deploy cloud based services for every new projector requirements. Privacy and security
aspects in a cloud based computing environment remains at the core of interest. Public clouds are managed by the
service providers which include servers, storage, networking and datacenter operations. This paper presents a review
on the security issues inherent within the context of cloud computing and cloud infrastructure. Ensuring security to
the data is an important issue in cloud storage, even though many efforts have been taken to solve the security
problem. This paper presents a survey on security issues using Attribute Based Encryption (ABE), Key-Policy ABE
(KP-ABE), Cipher-text Policy ABE (CP-ABE) and File Hierarchy Cipher-text policy Attribute-Based Encryption
(FH-CP-ABE).ABE uses public-key cryptography by having public key as an arbitrary string. The main concern in
this approach is that the decryption can happen only if the user holds the key with matching attributes which are
issued by a trusted party. Different from previous cloud based data system, data owners encrypt their secret data for
the data receivers using KP-ABE Encryption scheme. Another advanced specification is File Hierarchy Cipher-text
policy Attribute-Based Encryption (FH-CP-ABE).In this approach, the data files have the characteristic of multilevel hierarchy. Each layered structures are integrated and then the hierarchical files are encrypted with the integrated access structure.