Privacy Preserving Data Access To Cloud

International Journal for Research in Applied Science and Engineering Technology, 2017

This Quick growth in communications, storage and processing information allow us to move all data into some remote place. Data management systems activated by automated traditional tasks such as keeping record of business transactions and many more. This data involved mainly of numeric and characteristics and graphical representation. Cloud is not a particular product; it is a simple technique of delivering IT services based on demand, adaptable to rescale as required based pay-as-use model. Cloud computing becomes popular because of its delivery of flexible access to the cloud data storage. The cloud data storage capacity allows users to access and extract the sensitive information whenever they require. The storage and access of data through the third party server or proxy server increases the load of the users this leads to a memory and time complexity. Storing and accessing data through the cloud server or proxy server will arise security issue. This concludes occurs cloud servers are not fully trustable as data is openly available to them. Some existing storage services provide security of stored data, while data confidentiality for the database as a service model is still not fully formed. In this proposed architecture a different architecture that takes part cloud database services with confidentiality of data and the opportunity of performing parallel operations on encrypted data. This architecture supports physically scattered clients which are directly connected to an encrypted cloud database, and to perform concurrent and independent operations such read, write and modify the database structure. All information stored on cloud is in encrypted format. Metadata related to the information is in encrypted format so ease access of information is controlled. This work proposed architecture eliminates intermediate proxy servers that limit the availability, elasticity, and scalability properties cloud-based solutions. Blowfish algorithm technique is used for the encryption and decryption of data. Because of variable key length decryption of the data is difficult. User can store any type of information on cloud and can retrieve in distributed environment. Response time is also increases as omission of intermediate proxy server. Blowfish algorithm is fast in speed as well as not attach are found on the application in which blowfish algorithm is used. Higher security with great response time data is available everywhere.

International Journal Of Engineering And Computer Science, 2016

As the information created by the ventures that should be put away and used (e.g. messages, individual wellbeing records, photograph collections, charge reports, budgetary exchanges and so on) is quickly expanding information proprietors are inspired to outsourced their nearby complex information administration frameworks into the cloud for its extraordinary adaptability and monetary reserve funds. Distributed storage permits shoppers and organizations to utilize the application without establishment and access their own records at any PC with web access. In distributed storage, the information will be put away given by cloud administration suppliers (CSPs). Cloud administration suppliers must have a reasonable approach to ensure their customers information. In any case, in information security assurance and information recovery control is most testing exploration work in distributed computing. This paper basically concentrates on center secured distributed storage administrations i.e by encrypting the information it can store the data in securely.

Number of businesses using cloud computing has increased dramatically over the last few years due to the attractive features such as scalability, flexibility, fast start-up and low costs. Services provided over the web are ranging from using provider's software and hardware to managing security and other issues. Some of the biggest challenges at this point are providing privacy and data security to subscribers of public cloud servers. An efficient encryption technique presented in this paper can be used for secure access to and storage of data on public cloud server, moving and searching encrypted data through communication channels while protecting data confidentiality. This method ensures data protection against both external and internal intruders. Data can be decrypted only with the provided by the data owner key, while public cloud server is unable to read encrypted data or queries. Answering a query does not depend on it size and done in a constant time. Data access is managed by the data owner. The proposed schema allows unauthorized modifications detection.

This is a common fact nowadays to use the external third party resources for data storage and sharing among multiple personnel of the same organization or different organizations. Such external resources are collectively known as Cloud Computing resources. Cloud Computing resources save time, cost and efforts required to manage the huge data of organizations. Due to the rapid growth of using cloud services in many organizations or individuals, there are many concerns resulted. The major concerns are data sharing, security and efficiency. Since from last 15 years, there are number of solutions and researches were conducted and applied. Data sharing both single user and multiuser in Cloud Computing, and hence it is required that data sharing is strongly secured, number of recent cryptography base methods such as Identity Based Encryption or Attributed Based Encryption are designed for secure data sharing among multiple users. All the recent methods have some limitations and advantages. This paper addresses the current research problems of data security and privacy preserving in cloud servers. The study was presented over different methods of cloud data security and their comparative analysis first. At we discussed the research limitations of those methods.

international journal for research in applied science and engineering technology ijraset, 2020

In the era of digitization and technological advancement, cloud computing is that the trending domain in several regards. Cloud computing permits us to form and customize business applications on-line. It allows the cost-efficient, easy approach by configuring the parts and also the applications on information centers. Whereas security remains a serious concern in cloud. Once the cryptography secret is exposed, the sole possible way to preserve information confidentiality is to limit the adversary's access to the cipher text. However, if information is encrypted, using the existing cryptography schemes and spreading the cipher text on multiple servers hasn't entirely solved the matter since somebody who may acquire the cryptography key, will still compromise single server and rewrite the cipher text keep therein. We in this paper tend to address confidentiality, user authentication and information integrity under key exposure. I. INTRODUCTION Computing is being fully changed to a model consisting of services that are commoditized and delivered using a fashion quite like many utilities which is usually available like water electricity, etc. In such models, users able to access services supported their requirements without relevancy where the services are hosted. Different computing paradigms deliver this utility computing which include Grid computing, Peer to Peer computing, and more recently cloud computing. [1]. Cloud Computing is a trending and emerging computing technology that uses the online and thus the remote servers to need care of data and applications. Cloud Computing refers to applications and services offered over the web. These services are offered from data centers everywhere the world, which collectively are mentioned because the "cloud. "Cloud computing is Pay Per-Use-On-Demand model which may conveniently access shared IT resources through the web Where the IT resources include social networking sites, web mail, online business applications and network Services. Cloud computing divulge infrastructure, platform, and software (application) as services, which are made available as subscription-based services to consumers. These services in industry are respectively mentioned as Infrastructure as a Service (Iaas) ,Software as a Service (SaaS) and Platform as a Service (PaaS).To realize cloud computing potential, vendors like Amazon, Google, Microsoft and IBM are started to make and deploy Clouds in various locations across the planet. Additionally, companies working across the planet require the faster response time and thus save time by distributing workload requests to multiple Clouds in various locations at the same time. This creates the necessity for flourishing a computing world for dynamically interconnecting and provisioning Clouds from multiple domains within and across enterprises. There are many difficulties involved in creating such Clouds and Cloud interconnections. Cloud computing companies' states that data is secure, but it isn't completely true. Only time will tell if your data is secure within the cloud. Since customer data and program are residing in provider premises cloud security concerns are arising tons. While cost and easiness to use are two major benefits of cloud computing, there are significant security concerns that require to be addressed while moving critical applications and crucial data to public and shared cloud environments. With social networking services gaining popularity it has to concentrate on sharing data. Google Docs is one such cloud platform which provides data sharing capabilities as groups of scholars, or teams performing on a project can share documents and should collaborate with one another effectively. There's an assumption that data servers will be trusted to stay the info secure. However, this assumption isn't any longer valid today since services are increasingly storing data across many servers that are shared with other data owners. The Cloud is prone to many privacy and security attacks. The largest obstacle hindering the development and also the wide adoption of the Cloud is that the privacy and security issues related to it. An example of this can be cloud data storage where cloud service providers aren't within the identical trusted domains as end users, and hardware platforms aren't under the direct control of information owners. To mitigate user's privacy concerns about their data, a typical solution is to store data in encrypted form so as that it will remain private, whether or not data servers or storage devices aren't trusted or compromised.