The Security Problems Faced By Cloud Computing

A company allows its staffs in the same groupor department to store and share files in the cloud. By utilizing the cloud, the staffs can be completely released from the troublesome local data storage and maintenance.However, it also poses a significant risk to the confidentialityof those stored files. Specifically, the cloud serversmanaged by cloud providers are not fully trusted by userswhile the data files stored in the cloud may be sensitive andconfidential, such as business plans. To preserve dataprivacy, a basic solution is to encrypt data files, and thenupload the encrypted data into the cloud. Unfortunately,designing an efficient and secure data sharing scheme forgroups in the cloud is not an easy task due to the followingchallenging issues.First, identity privacy is one of the most significantobstacles for the wide

We would like to provide the benefits of cloud computing without any troubles to propel in the direction it is designed for. This is to be achieved by preventing the owner's data from all risks associated and providing a cloud model that is more secure and efficient. The proposed model shall overcome the security risks defined by the security functions over cloud computing, as follows in (Passent M. et al., 2015):

With public clouds, when a customer chooses to house their information in this way they lose the physical access to their servers hosting that data. The cloud provider itself has physical access, and the vulnerability that this exposes are insider attacks. An insider attack would be when an employee of the cloud provider accesses data that they should not. Cloud providers need to ensure that their hiring policies involve stringent background checks and that all data centers have monitoring to ensure that suspicious activity is caught early.

This section of paper includes why we need cloud computing as a security control tool against the cyber criminal activities and in how many ways it can be implemented. As we are living in a technical era, many aspects of our lives rely on the Internet and computers, including transportation, communications, government, medicine, finance and education. Consider how much of our personal information is stored either on our own computer or on someone else’s system.

Cloud computing emerge as a computational prototype as well as a sharing architecture and its main intention is to provide secure, quick, convenient data storage and net computing services and dispatched all

Individual use on request -The resources can be used at anywhere, anyplace and at any time via a global network. There is no need for human intervention from a service provider in order to access the resources

Cloud Computing is an innovative method of viewing,editing,accessing and sharing data among a particular community or within individuals.The arrival of cloud computing has intensifiesd the data structure and the rapid changes taking place to it and the ways of accessing.It is really an easier,cheaper and safer method of data transmission and reception.

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)

The motivation behind choosing this topic is the many advantages of Computing of encrypted data and homomorphic encryption (HE) like Delegation which is when a client can delegate the process of data to the powerful third party (server) while still maintaining data privacy. To this end, the client could send the server an encryption of the data, created employing an HE scheme. The server is able to run processes over the encrypted data, and return an output to the client; the client needs only to decrypt to receive the processed answer. The server here can actually be a collection of computing devices (cloud).

Users share information in the cloud. Some purpose public or private organizations publish their database on the cloud for research purpose. This database may contain sensitive information about many people. The Hospital tracks its patients with help of this database. The privacy of this data must be preserved while disclosing it to third party or while placing it in long time storage. i.e. any sensitive information should not be disclosed [02].

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.

Privilege Control: This security component is necessary to control cloud usage by different individuals and organizations. It protects user’s privacy and ensures data integrity and secrecy by applying an anthology of rules and policies. Cloud users are granted different levels of access permissions and resource ownerships based on their account type. Only authorized users can access the authorized parts of the encrypted data through identity-based decryption algorithm. For example, in a healthcare cloud, not all practitioners have the same privileges to access patient’s data, this may depend on the degree to which a practitioner is involved/specialized in treatment; patients can also allow or refuse distribution their information with other healthcare practitioners or hospitals [24]. Encryption/Decryption algorithms [23] such as AES [5] [7] and RC4 [6] can be employed by this component to achieve confidentiality of information [22].

Cloud computing platform is vulnerable to security due to shared computing resources between multiple users. Also cloud computing resources are installed and managed by cloud providers. So cloud providers can have access to the confidential data. Data breaches can occur due to stealing or modifying important data by the harmful cloud providers. So data security, confidentiality and integrity can be problematic when cloud computing services are used[1]. Organizations can use Cryptographic techniques and Encrypted File System (EFS) to do data encryption for the security. Public keys are used for the encryption and decryption of the data by EFS. These keys are stored in the disk of the computer. So EFS is not a good option to use for the data security in the cloud. System administrators can have

Enterprise applications, database, financial analytics, data warehousing, data mining, virtual desktop infrastructure and virtual machine deployment all these requires high performance infrastructure and security based storage systems. The existing systems consume more time to load and slow down its speed. Organizations are upgrading the technological systems to the flash and cloud environment and offers security to the data storage in the cloud using the new encryption techniques.

Abstract: Cloud technology is very constructive and usefulin present new technological era, where a person uses the internet and the remote servers to give and maintain data as well as applications. Such applications in turn can be used by the end users via the cloud communications without any installation. Moreover, the end users‟ data files can be accessed and manipulated from any other computer using the internet services. Despite the flexibility of data and application accessing and usage that cloud computing environments provide, there are many questions still coming up on how to gain a trusted environment that protect data and applications in clouds from hackers and intruders. Cloud storage should be able to store and share data securely, efficiently, and flexibly with others in cloud storage. The costs and complexities involved generally increase with the number of the decryption keys to be shared. The encryption key and decryption key are different in public key encryption. Since we are proposing new era of Aggregate key cryptography. To produce constant length ciphertext is also one of important task that we have materialized. In this paper, we propose a simple, efficient, and publicly verifiable approach to ensure cloud data security while sharing between