Ensuring Security to Data on Cloud using Cryptography

International Journal of Engineering Development and Research, 2016

Cloud computing is a rising computing standard in which the computing framework is given as a service over the Internet. The Cloud computing tool gives facility of data storage and access for cloud users, but when outsourcing the data to a third party causes safety issue of cloud data so data are protected by restricting the data. We propose a new decentralized access control scheme for secure data storage in the clouds that supports anonymous authentication where identity of the user is protected from the cloud during authentication. The architecture is decentralized, meaning that there can be several KDCs for key management. Revoked users cannot access data after they have been revoked. The proposed scheme is resilient to replay attacks. In addition to this a new symmetric key cryptographic method called Modern encryption Standard (MES)-II presents method which can be effective to encrypt various types of plain text files and the method is free from standard cryptography attacks n...

2014

is a model for enabling ubiquitous, convenient, on demand network access to a shared pool of configurable computing resources such as storage, network applications and services that can be rapidly provisioned and released with minimal management effort. Users can enjoy the benefits of cloud computing once the they are sure about their data security. Since users data are stored in remote locations -which is not under direct control and visibility of users or data owners .So ensuring the security at the remote storage is a big challenge. There are variety of algorithms for ensuring security and integrity. Among them RSA for digital signature generation and SHA for hash code generation are used here efficient in public cryptosystems. Here to provide additional security the sentinels added to the data. Though cloud provides efficient services, the main challenge service providers and customers facing is data security, integrity maintenance, storage maintenance. For the better public auditing users go in need to the Third Party Providers (TPA).By using the multiple TPA's the invalid responses overcomed.

World Academy of Research in Science and Engineering, 2019

This present research paper proposes the security is frequently referred to as a standout among the most unlimited issues in the cloud processing as distributed computing gives a helpful and huge measure of capacity information at extremely low and effective expense so searching for a legitimate wellbeing measures is basic. It is contended that the Cloud is proposed to deal with a lot of information, along these lines aggressors can be search for taking out the information as it includes different data's being put away. A many customers are surfing cloud for diverse purposes hence they need profoundly protected & persevering administrations. The developing of cloud is growing day by day which utilizes the additional level of protection and validation. We propose a basic information assurance model where information is encoded utilizing MD5 with RSA and Authenticated by Diffie-Hellman calculation prior to it is propelled in the cloud, therefore guaranteeing data privacy and security.

Cloud makes data storage very smart. It provides enormous amount of space to store the user’s data. These data are instantly available for the users at any time and it reduces the cost with respect to hardware support, technical experts available and license of the database. It leverages the small and medium scale enterprise straight away to start their business. Nevertheless cloud has many advantages; enterprises are undecided to deploy their data in the cloud storage, because data security issue is the top concern in Cloud Storage (CS). Security issues arose from the attack of cloud data by the hackers. Hackers are either outsiders from the enterprises or insiders from cloud service providers. This paper considers the issue that the CS is attacked by insiders from the cloud service provider. To protect this attack, this paper proposes the data confidentiality framework called AROMO. As per the proposed framework, user’s data are protected in the Cloud Storage. The proposed framework has a mechanism which uses two techniques to protect the data that are encryption and obfuscation. The data are encrypted and obfuscated before it is uploaded to CS. A metadata is maintained in the client. It contains the details of encryption and obfuscation applied on the data. To retrieve data from the CS, query is generated to run on encrypted and obfuscated data on the server side. Based on the query from the client, required data is fetched out from the CS; it could be decrypted and deobfuscated in client side based on the metadata details.

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.