Cloud Storage Security Using Encryption and Third-Party Storage Auditing Service (original) (raw)
Related papers
2016
Using cloud services, anyone can remotely store their data and can have the on-demand high quality applications and services from a shared pool of computing resources, without the burden of local data storage and maintenance. Cloud is a commonplace for storing data as well as sharing of that data. However, preserving the privacy and maintaining integrity of data during public auditing remains to be an open challenge. In this paper, we introducing a third party auditor (TPA), which will keep track of all the files along with their integrity. The task of TPA is to verify the data, so that the user will be worry-free. Verification of data is done on the aggregate authenticators sent by the user and Cloud Service Provider (CSP). For this, we propose a secure cloud storage system which supports privacy-preserving public auditing and blockless data verification over the cloud.
Privacy-preserving public auditing for data storage security in cloud computing
… , 2010 Proceedings IEEE, 2010
Cloud Computing is the long dreamed vision of computing as a utility, where users can remotely store their data into the cloud so as to enjoy the on-demand high quality applications and services from a shared pool of configurable computing resources. By data outsourcing, users can be relieved from the burden of local data storage and maintenance. However, the fact that users no longer have physical possession of the possibly large size of outsourced data makes the data integrity protection in Cloud Computing a very challenging and potentially formidable task, especially for users with constrained computing resources and capabilities. Thus, enabling public auditability for cloud data storage security is of critical importance so that users can resort to an external audit party to check the integrity of outsourced data when needed. To securely introduce an effective third party auditor (TPA), the following two fundamental requirements have to be met: 1) TPA should be able to efficiently audit the cloud data storage without demanding the local copy of data, and introduce no additional on-line burden to the cloud user; 2) The third party auditing process should bring in no new vulnerabilities towards user data privacy. In this paper, we utilize the public key based homomorphic authenticator and uniquely integrate it with random mask technique to achieve a privacy-preserving public auditing system for cloud data storage security while keeping all above requirements in mind. To support efficient handling of multiple auditing tasks, we further explore the technique of bilinear aggregate signature to extend our main result into a multi-user setting, where TPA can perform multiple auditing tasks simultaneously. Extensive security and performance analysis shows the proposed schemes are provably secure and highly efficient.
Rigorous Public Auditing Support On Shared Data Stored In The Cloud By Privacy-Preserving Mechanism
2015
Cloud storage systems allow data owners to host their data on cloud servers and users (data consumers) can access their data from cloud servers. The paradigm of data hosting service also introduces new security challenges, which requires an independent auditing service to check the data integrity in the cloud server. Generally security in cloud is achieved by signing the data block before sending to the cloud server. Moreover, users should use cloud storage like the local storage and they didn't worry about the integrity of the data. In large-scale cloud storage systems, the data may be updated dynamically, so existing remote integrity checking methods served for static archive data are no longer applicable to check the data integrity. Thus, efficient and secure dynamic auditing protocols desired to convince data owners that the data is correctly stored in the cloud. The public auditability for cloud data storage security is of critical importance so that users can resort to an external audit party to check the integrity of stored data when needed. To securely introduce an effective third party auditor (TPA), these are : 1) TPA should be able to efficiently audit the cloud data storage without demanding the local copy of data, and introduce no additional on-line burden to the cloud user; 2) The third party auditing process should bring in no new vulnerabilities towards user data privacy. In this paper, we propose a secure cloud storage system supporting privacy-preserving and public auditing.
Trusted Public Auditing Process for Secure Cloud Storage
Cloud computing moves the application software and databases to the centralized large data centers, where the management of the data and services may not be fully trustworthy. This unique paradigm brings about many new security challenges, which have not been well understood. The problem of ensuring the integrity of data storage in Cloud computing we introduce TPA. The proposed system is based on HLA algorithm to support data integrity. It eliminates the involvement of the client through the auditing of whether his data stored in the cloud are indeed intact, which can be important in achieving economies of scale for Cloud Computing. Cloud computing is the long dreamed vision of computing as a utility, where users can remotely store their data into the cloud so as to enjoy the on-demand high quality applications and services from a shared pool of configurable computing resources. By data outsourcing, users can be relieved from the burden of local data storage and maintenance. Thus, enabling public auditability for cloud data storage security is of critical importance so that users can resort to an external audit party to check the integrity of outsourced data when needed.
Enhanced Public Auditability & Secure Data Storage in Cloud Computing
Cloud computing is the most envisioned paradigm shift in the computing world. Its services are being applied in several IT scenarios. This unique platform has brought new security issues to contemplate. This paper proposes a homomorphic encryption scheme based on the Elliptic curve cryptography. It implements a provable data possession scheme to support dynamic operation on data. The application of proof of retrievability scheme provisioned the client to challenge integrity of the data stored. The notion of a third party auditor (TPA) is considered, who verifies and modifies the data on behalf of the client. Data storage at the server is done using a Merkle hash tree (MHT) accomplishing faster data access. This proffered scheme not only checks the data storage correctness but also identifies misbehaving servers. The initial results demonstrate its effectiveness as an improved security system for data storage compared to the existing ones in most prospects.
Implementation of Public Auditing for Privacy Preserving in Secure Cloud Storage
Cloud computing area provides solution to the problem of limited storage using which a user can remotely store his or her data and enjoy the on demand high quality applications and services from a shared pool of configurable computing resources without handling the burden of local data that is being stored and maintained but the major fact is a user no longer possess the outsourced data that makes the data integrity protection in cloud computing environment as a formidable task for the users who posses constrained computing resources which pretends to use the cloud storage as if it is local without worrying about the need to verifying the data integrity by enabling public audit ability for cloud storage as it is considered to be critical where a user can resort to a third party auditor (TPA) to check the integrity of the outsourced data and be worry free. The vulnerabilities toward user data privacy introduce no additional online burden to user and in this paper we propose a secure cloud storage system that supports privacy preserving public auditing technique which is further extended to perform audits for multiple users simultaneously and efficiently by implementing extensive security and performance analysis which is proved in the proposed scheme which is provably secure and highly efficient.
IJERT-Secure and Efficient Audit Service for Data Integrity in Cloud Storage
International Journal of Engineering Research and Technology (IJERT), 2019
https://www.ijert.org/secure-and-efficient-audit-service-for-data-integrity-in-cloud-storage https://www.ijert.org/research/secure-and-efficient-audit-service-for-data-integrity-in-cloud-storage-IJERTCONV7IS01027.pdf Cloud-based outsourced storage relieves the client's burden for storage management and maintenance by providing a comparably low-cost, scalable, location-independent platform. Cloud computing is an emergent paradigm to provide reliable and resilient infrastructure enabling the users (data owners) to store their data and the data consumers (users) can access the data from cloud servers. However, the fact that clients no longer have physical possession of data indicates that they are facing a potentially formidable risk for missing or corrupted data. The Cloud Storage Service (CSS) relieves the burden of storage management and maintenance. To avoid the securityrisks, audit services are critical to ensure the integrity and availability of outsourced data and to achieve digital forensics and credibility on cloud computing. Provable Data Possession (PDP), which is a cryptographic technique for verifying the integrity of data without retrieving it at an untrusted server, can be used to realize audit services. The profiting from the interactive zero-knowledge proof system, address the construction of an interactive PDP protocol to prevent the fraudulence of proven (soundness property) and the leakage of verified data (zero-knowledge property). One fundamental aspect of this paradigm shifting is that data are being centralized and outsourced into clouds. Therefore, it isnecessary for cloud service providers to offer an efficient audit serviceto check the integrity and availability of the stored data.Traditional cryptographic technologies for data integrity and availability, based on hash functions and signature scheme, cannot work on theoutsourced data without a local copy of data.
Cloud computing is internet based computing which enables sharing of services. Many users place their data in the cloud. However, the fact that users no longer have physical possession of the possibly large size of outsourced data makes the data integrity protection in cloud computing a very challenging and potentially formidable task, especially for users with constrained computing resources and capabilities. So correctness of data and security is a prime concern. This paper studies the problem of ensuring the integrity and security of data storage in Cloud Computing. Security in cloud is achieved by signing the data block before sending to the cloud. Using Cloud Storage, users can remotely store their data and enjoy the on-demand high quality applications and services from a shared pool of configurable computing resources, without the burden of local data storage and maintenance. However, the fact that users no longer have physical possession of the outsourced data makes the data integrity protection in Cloud Computing a formidable task, especially for users with constrained computing resources.
IJERT-A System of Privacy Preserving Public Auditing for Secure Cloud Storage System
International Journal of Engineering Research and Technology (IJERT), 2014
https://www.ijert.org/a-system-of-privacy-preserving-public-auditing-for-secure-cloud-storage-system https://www.ijert.org/research/a-system-of-privacy-preserving-public-auditing-for-secure-cloud-storage-system-IJERTV3IS080756.pdf The Cloud computing is the internet based computing it enables sharing of services. It allows user to use application without installation of any application and user can access their personal files and application at any computer with internet or intranet access. In recent time number of user are using clouds for storing their data on cloud. It is beneficial for user because it allows user to store data and user can access it anytime and anywhere. Cloud computing is the technology for next generation information and software enabled work that is capable of changing software working environment. Cloud computing is the connection of nodes here nodes are computers connecting with each other for sharing information. The cloud is a platform where data owner remotely store their data in cloud storage. The main goal of cloud computing concept is to protect and secure the data which come under the property of users. The security of cloud computing environment is exclusive research area which requires further development from both research and academic communities. In the corporate world there are a huge number of cloud users which is storing data on cloud, accessing the data and modifying the data. In the cloud, services and application move to centralized huge data center and services and management of this data may not be trustworthy, into cloud environment the computing resources are under control of service provider and the third-party-auditor ensures the data integrity over out sourced data. As users are placing their data in cloud so correctness of data and security is the prime concern. Cloud data security is a major concern for the cloud user while using the cloud services provided by the service provider. To ensure correctness of data here we propose the task of allowing a third party auditor. On behalf of cloud user request to verify the integrity of data stored in the cloud is done by TPA .The advantage of TPA is that there is no additional online burden to user.In this paper we propose a secure cloud storage system supporting a privacy preserving public auditing. We further extend our result to enable the TPA to perform audits for multiple users simultaneously and efficiently with AES and BLOWFISH Encryption Algorithm. This shows the proposed scheme is highly efficient and data modification attack, and even server colluding attacks. Resulted encrypted method is secure and easy to use.
A Comprehensive Survey on Public Auditing for Secure Cloud Storage
International Journal of Engineering & Technology
Cloud computing is the most popular paradigms used today by Industries & individual users to store data. This outsourcing releases user from capital as well as maintenance cost to own their data. But it brings new security challenges such as data integrity & privacy since user has no power of control on his own data. Advances in encryption & authentication techniques has improved security of data at cloud server(CS) but still it is not providing any certificate or assurance about cloud data to user. Most of the times users are not aware of the different controls employed by CS to protect integrity of data. Due to this lack of transparency in system, the user may lose trust on CS. Hence it is a need of user to check integrity of his data at regular intervals. Most of the researchers have given solutions to this problem with the help of cryptography techniques. External parties such as Third-Party Auditors (TPA) are performing audit to verify this remote data on behalf of user. This p...