ACTIVE-HASH-TABLE BASED PUBLIC AUDITING FOR SECURE CLOUD STORAGE

2019 ◽  
Author(s):  
BALAKRISHNAN K ◽  
VIDHYA R
Keyword(s):  
Cloud Storage ◽  
Privacy Preservation ◽  
Computational Cost ◽  
Hash Table ◽  
Cloud Services ◽  
Third Party ◽  
Communication Overhead ◽  
Public Auditing ◽  
The Public ◽  
Secure Cloud Storage

Public auditing scheme for secure cloud storage based on dynamic hash table, which is a new two-dimensional data structure located at a third-party auditor (TPA) to record the data property information for dynamic auditing. Differing form the existing works, the proposed scheme migrates the authorized information from the cloud services provider to the TPA and thereby significantly reduces the computational cost and communication overhead. Our scheme can also achieve higher updating efficiency than the state of the art schemes. In addition, we extend our scheme to support privacy preservation by combining the homomorphic authenticator based on the public key with the random masking generated by the TPA and achieve batch auditing by employing the aggregate BLS signature technique. We formally prove the security of the proposed scheme and evaluate the auditing performance by detailed experiments and comparisons with the existing ones. The results demonstrate that the proposed scheme can effectively achieve secure auditing for cloud storage and outperform the previous schemes’ in computation complexity, storage costs, and communication overhead.

scholarly journals Multiauditing Based Cloud Storage Using a Dynamic Hash Table

2020 ◽  
Vol 8 (1) ◽  
pp. 143-148
Author(s):  
K Arun Kumar ◽  
R Mohammed Harun Babu ◽  
S Kalaivanan ◽  
V Kanimozhi
Keyword(s):  
Cloud Storage ◽  
Privacy Preservation ◽  
Service Providers ◽  
Computational Cost ◽  
Hash Table ◽  
Cloud Service ◽  
Computing System ◽  
Communication Overhead ◽  
Cloud Computing System ◽  
To Come

Cloud depository is one of the customary supplications of the cloud computing system, which offers on-demand offloading services for both individuals and institutions. Although utilizes do not have full faith in the cloud service providers (CSPs) within that, it is hard to decide either the CSPs meet their licit expectations for data security or not. Thence, it is evaluative to come up with productive auditing techniques to boost owners’ trust and reliance in cloud storage. In this paper, we are presenting a scheme of auditing for assured cloud storage based on a 2-dimensional data structure called a dynamic hash table (DHT), used to record the data information for public auditing. This scheme emigrates the approved information from the CSP to the TPA and thereby a remarkable reduction in the computational cost and communication overhead. Also, the deduplication technology is utilized to lower the capacity and bandwidth prerequisites of the utilities by removing repetitious informati zon and stockpiles, only an original replica of them. We enhance our design encourages privacy preservation by homomorphism authenticator constructed on the public key, and attend batch auditing by aggregate BLS signature technique. Experimental results indicate that our mechanism achieves secure deduplication and tag generation improvements.

scholarly journals Public Auditing for Secure Cloud Storage based on DHT

2021 ◽  
Vol 23 (11) ◽  
pp. 86-98
Author(s):  
Raziqa Masood ◽  
◽  
Q.P. Rana ◽  
Keyword(s):  
Cloud Computing ◽  
Cloud Storage ◽  
Service Providers ◽  
Cloud Service ◽  
Cloud Services ◽  
Third Party ◽  
Distributed Hash Table ◽  
Present System ◽  
Two Dimensional ◽  
Public Auditing

Today cloud computing has been the most popular service enjoyed by people due to the easy maintenance provided by it. Cloud computing is cost-efficient and people pay according to the services they use. Many organizations are using cloud storage and the reason behind it is that the outsourcing services are provided by the cloud computing. Most of people do not trust the legality of the services provided by cloud (CSPs i.e. cloud service providers) because they are afraid of the security breach of their data. The public auditing of the data by their owners is a technique that can maintain the trust of people on cloud services. This research paper is about cloud storage services based on the distributed hash table (DHT).This is required for dynamic auditing of information as this is new two-dimensional data and Third-party Auditor (TPA) is responsible for recording the information to do dynamic auditing and the dimensional data is located at TPA. The computational costs gets reduced when the authorized information is migrated to the two dimensional data and the Cloud service provider shifts it to the TPA DHT has many structural advantages and the services can be updated efficiently. The comparison with the present system is also made and is assured that it is the security system for the cloud storage. To secure the data information by blinding it, random masking is provided as a proof for securing process. The authentication is done via hashing technique and integrity and performance checks are made with this authentication process.

Dynamic-Hash-Table Based Public Auditing for Secure Cloud Storage

2017 ◽  
Vol 10 (5) ◽  
pp. 701-714 ◽  
Author(s):  
Hui Tian ◽  
Yuxiang Chen ◽  
Chin-Chen Chang ◽  
Hong Jiang ◽  
Yongfeng Huang ◽  
...  
Keyword(s):  
Cloud Storage ◽  
Hash Table ◽  
Public Auditing ◽  
Secure Cloud Storage

scholarly journals A Blockchain-Based Public Auditing Scheme for Cloud Storage Environment without Trusted Auditors

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Song Li ◽  
Jian Liu ◽  
Guannan Yang ◽  
Jinguang Han
Keyword(s):  
Cloud Storage ◽  
Cloud Service ◽  
Emerging Technology ◽  
Third Party ◽  
Cloud Service Provider ◽  
Public Auditing ◽  
The Public ◽  
Blockchain Technology ◽  
Fairness And Efficiency ◽  
Cloud Storage Environment

In the cloud storage applications, the cloud service provider (CSP) may delete or damage the user’s data. In order to avoid the responsibility, CSP will not actively inform the users after the data damage, which brings the loss to the user. Therefore, increasing research focuses on the public auditing technology recently. However, most of the current auditing schemes rely on the trusted third public auditor (TPA). Although the TPA brings the advantages of fairness and efficiency, it cannot get rid of the possibility of malicious auditors, because there is no fully trusted third party in the real world. As an emerging technology, blockchain technology can effectively solve the trust problem among multiple individuals, which is suitable to solve the security bottleneck in the TPA-based public auditing scheme. This paper proposed a public auditing scheme with the blockchain technology to resist the malicious auditors. In addition, through the experimental analysis, we demonstrate that our scheme is feasible and efficient.

scholarly journals Design and development of a secure certificateless proxy signature based (SE-CLPS) encryption scheme for cloud storage

2021 ◽  
Vol 10 (1) ◽  
pp. 57
Author(s):  
Ms. K. Sudharani ◽  
Dr. N. K. Sakthivel
Keyword(s):  
Computational Cost ◽  
Public Key Cryptography ◽  
True Positive Rate ◽  
Proxy Signature ◽  
Attack Detection ◽  
Third Party ◽  
Public Key ◽  
Secret Key ◽  
True Negative ◽  
The Public

Certificateless Public Key Cryptography (CL-PKC) scheme is a new standard that combines Identity (ID)-based cryptography and tradi- tional PKC. It yields better security than the ID-based cryptography scheme without requiring digital certificates. In the CL-PKC scheme, as the Key Generation Center (KGC) generates a public key using a partial secret key, the need for authenticating the public key by a trusted third party is avoided. Due to the lack of authentication, the public key associated with the private key of a user may be replaced by anyone. Therefore, the ciphertext cannot be decrypted accurately. To mitigate this issue, an Enhanced Certificateless Proxy Signature (E-CLPS) is proposed to offer high security guarantee and requires minimum computational cost. In this work, the Hackman tool is used for detecting the dictionary attacks in the cloud. From the experimental analysis, it is observed that the proposed E-CLPS scheme yields better Attack Detection Rate, True Positive Rate, True Negative Rate and Minimum False Positives and False Negatives than the existing schemes.   

scholarly journals A More Efficient Conditional Private Preservation Scheme in Vehicular Ad Hoc Networks

2018 ◽  
Vol 8 (12) ◽  
pp. 2546
Author(s):  
Tao Wang ◽  
Xiaohu Tang
Keyword(s):  
Ad Hoc Networks ◽  
Privacy Preservation ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Computational Cost ◽  
Communication Overhead ◽  
Storage Space ◽  
Anonymous Authentication ◽  
Vehicle Ad Hoc Networks ◽  
Hoc Networks

It is a challenging issue to provide a secure and conditional anonymous authentication scheme in vehicle ad hoc networks (VANETs) with low storage space and computational cost. In 2008, Lu et al. proposed a conditional privacy preservation scheme called efficiency conditional privacy preservation (ECPP) protocol. The ECPP protocol provides conditional privacy preservation to vehicles in VANETs. That is, on one hand vehicles can achieve anonymous authentication in the network, on the other hand, allow to be traced and revoked if necessary. However, ECPP scheme suffers from high computational cost and large storage. In this scheme, an improved protocol based on the concept of ECPP protocol has been proposed to achieve more efficiency conditional privacy preservation (MECPP) scheme in VANETs. Comparing with ECCP, the computational cost of the proposed scheme has been decreased by about 54 % while the communication overhead has been reduced by about 10 % . At the same time, a lot of storage space has been saved.

scholarly journals Modified Dynamic Hash Table with Threshold RSA for Dynamic and Public Auditing on Cloud Data

2019 ◽  
Vol 8 (11) ◽  
pp. 765-772
Keyword(s):  
Hash Table ◽  
Third Party ◽  
Experimental Result ◽  
Secret Key ◽  
Computation Cost ◽  
Public Auditing ◽  
Cloud Data ◽  
Major Application ◽  
Rsa Cryptography ◽  
State Of Art

Cloud storage is one of the major application in the cloud, which can provide the on-demand outsourcing data service for both organizations as well as individuals. The Data Integrity (DI) check in the cloud is applied by the user to ensure the integrity of data. The Third Party Auditing (TPA) technique is later introduced to check the cloud DI. Many research has been carried out in the public auditing to minimize the computation cost of the integrity check. The most existing method involves in lack of security and low computation overhead. In this research, the Modified Dynamic Hash Table with threshold Rivest, Shamir, and Adelman Algorithm (RSA) algorithm (MDHT-RSA) is proposed to improve the security and reduce the computation cost. The threshold RSA cryptography system increase the security by generating the secret key to the user and reduce the computation cost. The Modified Dynamic Hash Table (MDHT) is used to record the data information for dynamic auditing, which is located in the TPA. The MDHT is differed from the Dynamic hash table, that the MDHT doesn’t contain the tag block whereas the dynamic hash table has the tag block. The MDHT-RSA is analyzed with the computation cost and compared with existing method. The experimental result proved that the MDHT-RSA method has low computation cost than state-of-art method in public auditing. The verification cost of the MDHT-RSA is 1.3 s while a state-of-art method DHT-PA has the 1.35 s for the 200 blocks of data.

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