Attribute Based Encryption with Privacy Preserving In Clouds

Security and privacy are very important issues in cloud computing. In existing system access control in clouds are centralize d in nature. The scheme uses a symmetric key approach and does not supp ort authentication. Symmetric key algorithm uses same key for both encryption and decryption. The authors take a centralized approach where a single key distribution center (KDC) distribute secret keys and attributes to all users. A new decentralized acce ss control scheme for secure data storage in clouds that supports anonymous authentication. The validity of the user who stores the data is also verified. The proposed scheme is resilient to replay attacks. In this scheme using Secure Hash algorithm for au thentication purpose, SHA is the one of several cryptographic hash functions, most often used to verify that a file has been unaltered. The Paillier crypto system, is a probabilistic asymmetric algorithm for public key cryptography. Paillier algorithm used f or Creation of access policy, file accessing and file restoring process

Anonymous Authentication of Decentralized Access Control of Data Stored in Cloud

Cloud computing is location that allows users to store the data. Cloud computing is logically developed technology to store data from more than one user. In decentralized access control data is stored securely in cloud and here only valid users are able to decrypt the data stored in cloud and this is added feature of this scheme. This scheme supports anonymous authentication. It also supports construction, variation and reading data stored in cloud and also deals with user revocation. This access control scheme is decentralized and robust which is different from other access control scheme and costs are equivalent to centralized approaches. DOI: 10.17762/ijritcc2321-8169.16049

Hybrid clouds for data-Intensive, 5G-Enabled IoT applications: an overview, key issues and relevant architecture

Hybrid cloud multi-access edge computing (MEC) deployments have been proposed as efficient means to support Internet of Things (IoT) applications, relying on a plethora of nodes and data. In this paper, an overview on the area of hybrid clouds considering relevant research areas is given, providing technologies and mechanisms for the formation of such MEC deployments, as well as emphasizing several key issues that should be tackled by novel approaches, especially under the 5G paradigm. Furthermore, a decentralized hybrid cloud MEC architecture, resulting in a Platform-as-a-Service (PaaS) is proposed and its main building blocks and layers are thoroughly described. Aiming to offer a broad perspective on the business potential of such a platform, the stakeholder ecosystem is also analyzed. Finally, two use cases in the context of smart cities and mobile health are presented, aimed at showing how the proposed PaaS enables the development of respective IoT applications.Peer ReviewedPostprint (published version

An Application for Decentralized Access Control Mechanism on Cloud Data using Anonymous Authentication

In the last few years, Cloud computing has gained a lot of popularity and technology analysts believe it will be the future, but only if the security problems are solved from time-to-time. For those who are unfamiliar with cloud computing, it is a practice wherein users can access the data from the servers that are located in remote places. Users can do so through the Internet to manage, process and store the relevant data, instead of depending on the personal computer or a local server. Many firms and organizations are using cloud computing, which eventually is faster, cheaper and easy to maintain. Even the regular Internet users are also relying on cloud computing services to access their files whenever and wherever they wish. There are also numerous challenges associated with cloud computing like abuse of cloud services, data security and cyber-attacks. When clients outsource sensitive data through cloud servers, access control is one of the fundamental requirements among all security requirements which ensures that no unauthorized access to secured data will be avoided. Hence, cloud computing has to build a feature that provides privacy, access control challenges and security to the user data. A suitable and reliable encryption technique with enhanced key management should be developed and applied to the user data before loading into the cloud with the goal to achieve secured storage. It also has to support file access control and all other files related functions in a policy-based manner for any file stored in a cloud environment. This research paper proposes a decentralized access control mechanism for the data storage security in clouds which also provides anonymous authentication. This mechanism allows the decryption of the stored information only by the valid users, which is an additional feature of access control. Access control mechanism are decentralized which makes it robust when compared to centralized access control schemes meant for clouds