Cloud Computing Essay

Miss. Nupoor M. Yawale, Prof. V. B. Gadichha “Third Party Auditing (TPA) for Data Storage Security in Cloud with RC5 Algorithm” IJARCSSE,

Usage of remote servers via internet to store, manage and process data instead of using a personal computer is known as Cloud computing. It’s a set of Information Technology services with the ability to scale up or down their service requirements. Most of the cloud services are provided by a third party service provider. In cloud computing, organizations can utilize IT services without in advance investment. Despite its benefits obtained from the cloud computing, the organizations are slow in accepting it due to security issues and challenges. Security is one of the major problems which hinder the growth of cloud. It’s not wise to handing over the important data to another company; such that clients need to be vigilant in understanding the risks of data infringement in this new environment. This paper discusses a detailed analysis of the cloud computing security issues and challenges. (Ayoleke)

Cloud computing has become so famous; there is much widespread news about the cloud these days. This is mainly because of the exponential shift of the business applications from traditional models of software towards the Internet, and now through mobile devices. Cloud computing is a model that uses the network of remote servers that has been hosted on the internet rather than on a specific hardware. This would enable a better shared pool for storing, accessing and processing of data. With the huge information being available in the internet, the security for cloud computing has been challenging and this paper would elucidates the security threats of cloud computing also stating the possible countermeasures for them.

ABSTRACT: Cloud computing is a method of providing a set of shared computing resources that includes applications, computing, storage, networking, development, and deployment platforms as well as business processes. In cloud computing, data while transferring as well as storage, and get data back when it is needed there is no assurance about the security of that data stored and also it is not changed by the cloud or TPA. Therefore Security and control over data remain to play a significant role in plans for cloud computing initiatives. Existing research work earlier grant data integrity to be verified,but still there are different drawbacks, firstly basic and mostly needed authorization/authentication process is not present in between Cloud Service provider and TPA. Techniques like authentication and encryption are important, our system can provides those things for security issues. Second: in recent research POR protocol in which the verifier stores only a single cryptographic key, POR can only capable of detection of file corruption or loss, and not prevention. Maintaining the storages can be a tough task and second it requires high resource costs for the implementation. This paper, Propose a formal analysis method called full

when we transfer data to cloud we use standard encryption tecnique to secure the data. But when we have to do computations on data stored on cloud then we have to decode data i.e provide private key every time which is not a secure method.In this paper we are introducing a technique which allow us to do computations on encrypted data which is kept on cloud on remote servers without need of any private key and without decoding it.Result of computations will be same as computations performed on raw

Abstract - Cloud Computing is huge computing, it is the internet based computing, where all users can remotely store their data into the cloud so as to enjoy the latest and high quality applications and services. In outsourcing data , users can be relieved from the burden of local maintenance and data storage .Thus, enabling public auditability for cloud data storage security is of difficult so that users can resort to an external audit party to check the integrity of outsourced data when needed. To securely introduce an effective. The following two fundamental requirements to securely introduce an effective third party auditor (TPA) .1) The third party auditing process should bring in no new vulnerabilities towards user data privacy. 2) TPA introduces no additional on-line burden to the cloud user. TPA should be able to efficiently audit the cloud data storage. 3) TPA should audit the data for checking the integrity of that data. In this we propose for privacy-preserving public auditing for cloud data storage.To enable the TPA to perform audits for multiple users simultaneously and efficiently.We also doing batch auditing for multiple users data.

Cloud Computing is a new paradigm in which computing resources:(i) Processing, (ii) Memory and (iii) Storage are not physically present at the user’s location. The proposed system will create the multiple users to monitor and handle the data integration physically in the Third Party Auditor (TPA). A utilization of homomorphic linear authenticator and random mask will guarantees that the TPA will unable to retrieve any information / data content stored in the cloud server during auditing process. In the proposed work, the reinforcement of TPA handles multiple audit sessions from an outsourced data files and extend the existed Privacy-Preserving Public Auditing Protocol (P3AP) into an Multi-User Public Auditing Protocol (MUPAP). It performs an efficient Multiple Auditing Tasks (MAT) to typically eliminate the burden of tedious and expensive auditing task and improves outsourced data leakage

The surge in advancements in distributed systems and networking technology and the advantages that it has brought along with it, has many individuals and organizations move from local to remote cloud storage [1]. Cloud storage falls under Infrastructure as a Service (IaaS) in the series of cloud services where in, a user’s or organization’s data is stored in a nexus of remote servers. Cloud infrastructures can be broadly classified as either public or private. The remote servers provided by public cloud storage service, preserves the unhindered and efficient accessibility of a local storage server along with transparency while customers/users has access to their data. While there are benefits to using a public cloud infrastructure, it poses significant privacy and security risks [2]. The goal of this research is to obtain the degree of security that is indigenous to a private cloud environment in a public cloud environment with respect to data storage. To achieve such degree of security [1], a public cloud storage service should provide (at least):

Cloud computing is a model for enabling convenient and on-demand network access to a shared pool of computing resources.One of the major characteristics of the cloud services is that users’ data are processed on unknown remote servers which are not under the control of service owner.Multiple users want to do business of their data or application using cloud , but their fears of losing control over their data or application become a barrier to the wide adoption of cloud computing services.Data owner must get confirmation that his/her data is safe on the cloud. To solve these problems, here proposes a highly decentralized framework to monitor the actual usage of the user’s data available on the cloud.The framework proposed in this work performs automated logging and distributed auditing of relevant access performed by other entity, occured at any point of time at any cloud provider . Software as a service model is considered in this work. The methodology includes an object centered approach that uses JAR programmable capabilities to create an object that contains service owner’s policies and data.When the data are accessed by any external entity, logging mechanism is automatically triggered at the moment itself.Automatic JAR checking is also done to verify the trustworthiness of the cloud server.Data encryption technique,policy checking and technique to

be an issue. In different service models, the level of trust must also be different.

The infrastructure of the cloud provides a multi-tenant configuration in which software deployed in virtual machines, is accessed by multiple users concurrently across heterogeneous environments. Though verifying software through evidence can provide a means for trust, the consumer would demand the authenticity of that trusted service. The possibilities for the consumer not able to fully trust are that, there is no governance or authority to certify the resources. Hence a third party authority generally called as the cloud auditor should verify and certify the service instance which is generally termed as attestation process.

Protection of data is the most important challenges in cloud computing because the location of the data is not always known. To enhance the security in cloud computing organization should provide authentication, authorization and access control for data stored in cloud. Top vulnerabilities are to be checked to ensure that data is protected from any attacks. So security test has to be done to protect data from malicious user such as Cross-site Scripting and Access Control mechanisms.

In the world of technical life cloud computing has become integral part and also understanding the way of business is changing and is likely to continue changing into the future. Using cloud storage services means that you and others can access and share files across a range of devices and position. Files such as photos and videos can sometimes be unmanageable to email if they are too big or you have allot of data. You can upload your data to a cloud storage provider means you can speedily circulate your data with the help of cloud service and you can share your data files with anyone you choose. Since cloud computing shares distributed resources via network in the open environment thus it makes less secured. Data security has become a major issue in data sharing on cloud. The main motto behind our system is that it secures the data and generates the key for each transaction so every user can secure our shared data by the third party i.e. unethical hacker.

The goal of our research paper is to provide a concise analysis on data security and privacy protection issues pertaining to data and databases as well as the current advancement/ breakthrough made and achieved in regards to database security and privacy concerns. We will also discuss in this paper some current solutions in the security market. First, we looked at the a trusted database model which makes it possible to shield database with absolute secrecy to benefit trusted equipment presented on the side of server and made to work at the charge of any cryptography which permits private data handling on a simple device.

To address the issue of data deduplication there has been many schemes introduced in cloud computing. The main goal was to lower the resources cost from the cloud server. Data deduplication increases the volume of resources for data storage and limits it to consumers. As cloud computing offers vast and heavy data storage service there is a possibility of duplicate data storage in a server or multiple servers. Many techniques implemented till now focuses on security issues and sided the issue of data duplication on cloud server. To utilize the available resources in a very official and implicit manner there is a need to verify data of an individual or an organization where data is being stored in duplicates in cloud server. Information