SHARED AUTHORITY BASED PRIVACY-PRESERVING AUTHENTICATION PROTOCOL IN CLOUD COMPUTING

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Engineering

SHARED AUTHORITY BASED PRIVACY-PRESERVING
AUTHENTICATION PROTOCOL IN CLOUD COMPUTING
ABSTRACT
Cloud computing is an emerging data interactive paradigm to realize users’ data remotely
stored in an online cloud server. Cloud services provide great conveniences for the users to enjoy
the on-demand cloud applications without considering the local infrastructure limitations. During
the data accessing, different users may be in a collaborative relationship, and thus data sharing
becomes significant to achieve productive benefits. The existing security solutions mainly focus
on the authentication to realize that a user’s privative data cannot be illegally accessed, but
neglect a subtle privacy issue during a user challenging the cloud server to request other users for
data sharing. The challenged access request itself may reveal the user’s privacy no matter
whether or not it can obtain the data access permissions. In this paper, we propose a shared
authority based privacy-preserving authentication protocol (SAPA) to address above privacy
issue for cloud storage. In the SAPA, 1) shared access authority is achieved by anonymous
access request matching mechanism with security and privacy considerations (e.g.,
authentication, data anonymity, user privacy, and forward security); 2) attribute based access
control is adopted to realize that the user can only access its own data fields; 3) proxy re-
encryption is applied to provide data sharing among the multiple users. Meanwhile, universal
composability (UC) model is established to prove that the SAPA theoretically has the design
correctness. It indicates that the proposed protocol is attractive for multi-user collaborative cloud
applications.

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In cloud computing outsourcing group resource among cloud users is a major challenge, so cloud computing provides a low-cost and well-organized solution. Due to frequent change of membership, sharing data in a multi-owner manner to an untrusted cloud is still its challenging issue. In this paper we proposed a secure multi-owner data sharing scheme for dynamic group in public cloud. By providing AES encryption with convergent key while uploading the data, any cloud user can securely share data with others. Meanwhile, the storage overhead and encryption computation cost of the scheme are independent with the number of revoked users. In addition, I analyze the security of this scheme with rigorous proofs. One-Time Password is one of the easiest and most popular forms of authentication that can be used for securing access to accounts. One-Time Passwords are often referred to as secure and stronger forms of authentication in multi-owner manner. Extensive security and performance analysis shows that our proposed scheme is highly efficient and satisfies the security requirements for public cloud based secure group sharing.

A cloud storage system for sharing data securely with privacy preservation an...

eSAT Journals

Abstract Cloud computing provides much-known services for storing user data over cloud server and it provides attention towards a broad set of technologies, rules and controls deployed to provide security for applications and data. As the more and more firm uses the cloud, security in cloud environment is becoming very important issue. It is much needed that companies should work with partners doing best practices of cloud security and which facilitate transparency for their solutions. Number of security solutions today depends on the authentication for security but it did not provide solution for the privacy problems while sharing data in the cloud environment. Data access request from the user itself may expose users’ private data no matter his request approved or not. So this becomes very important in sharing data in the cloud environment. In this paper we proposed a system which provides attention towards the above mentioned problem. In proposed system we used the concept of data anonymity for sending data access request to data owner and also provide the data auditing facility to detect fraud in the integrity of users shared data. Keywords: Cloud computing, privacy preservation, data integrity, data sharing, authentication

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Benefited from cloud computing, users can achieve an effective and economical approach for data sharing among group members in the cloud with the characters of low maintenance and little management cost. Meanwhile, we must provide security guarantees for the sharing data files since they are outsourced. Unfortunately, because of the frequent change of the membership, sharing data while providing privacy-preserving is still a challenging issue, especially for an untrusted cloud due to the collusion attack. Moreover, for existing schemes, the security of key distribution is based on the secure communication channel, however, to have such channel is a strong assumption and is difficult for practice. In this paper, we propose a secure data sharing scheme for dynamic members. Firstly, we propose a secure way for key distribution without any secure communication channels, and the users can securely obtain their private keys from group manager. Secondly, our scheme can achieve fine-grained access control, any user in the group can use the source in the cloud and revoked users cannot access the cloud again after they are revoked. Thirdly, we can protect the scheme from collusion attack, which means that revoked users cannot get the original data file even if they conspire with the untrusted cloud. In our approach, by leveraging polynomial function, we can achieve a secure user revocation scheme. Finally, our scheme can achieve fine efficiency, which means previous users need not to update their private keys for the situation either a new user joins in the group or a user is revoked from the group.

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The data is stored in the cloud. Storing data should be risky. Cloud provider should be trustful because the data is confidentential. The Group manager keeps the record of group members. The key distribution is done to the group of each department. The Group members can access the stored data from cloud. The encryption-decryption technique is used to store the data. Any cloud user can anonymously share data with others by providing group signature and dynamic broadcast encryption techniques. When new member joined in the group, new granted users can directly decrypt data files uploaded without contacting with data owners. Proposing a new model for Sharing Secure Data in the Cloud for the Multiuser Group.

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Cloud computing refers to a type of networked computing whereby an application can be run on connected servers instead of local servers. Cloud can be used to store data, share resources and also to provide services. Technically, there is very little difference between public and private cloud architecture. However, the security and privacy of the data is a very big issue when sensitive data is being entrusted to third party cloud service providers. Thus encryption with a fine grained access control is inevitable to enforce security in clouds. Several techniques implementing attribute based encryption for fine grained access control have been proposed. Under such approaches, the key management overhead is a little bit high in terms of computational complexity. Also, secret sharing mechanisms have added complexity. Moreover, they lack mechanisms to handle existence of traitors. Our proposed approach addresses these requirements and reduces the overhead of the key management as well as secret sharing by using efficient algorithms and protocols. Also, a traitor tracing technique is introduced into the cloud computing two layer encryption environment.

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We propose a new decentralized access control scheme for secure data storage in clouds that supports anonymous authentication. In the proposed scheme, the cloud verifies the authenticity of the series without knowing the user’s identity before storing data. Our scheme also has the added feature of access control in which only valid users are able to decrypt the stored information. The scheme prevents replay attacks and supports creation, modification, and reading data stored in the cloud. We also address user revocation. Moreover, our authentication and access control scheme is decentralized and robust, unlike other access control schemes designed for clouds which are centralized. The communication, computation, and storage overheads are comparable to centralized approaches.

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Cloud computing is rapidly emerging due to the provisioning of elastic, flexible, and on demand storage and computing services for customers. The data is usually encrypted before storing to the cloud. The access control, key management, encryption, and decryption processes are handled by the customers to ensure data security. A single key shared between all group members will result in the access of past data to a newly joining member. The aforesaid situation violates the confidentiality and the principle of least privilege.

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Cloud computing is a huge area which basically provides many services on the basis of pay as you go. One of the fundamental services provided by cloud is data storage. Cloud provides cost efficiency and an efficient solution for sharing resource among cloud users. A secure and efficient data sharing scheme for groups in cloud is not an easy task. On one hand customers are not ready to share their identity but on other hand want to enjoy the cost efficiency provided by the cloud. It needs to provide identity privacy, multiple owner and dynamic data sharing without getting effected by the number of cloud users revoked. In this paper, any member of a group can completely enjoy the data storing and sharing services by the cloud. A secure data sharing scheme for dynamic cloud users is proposed in this paper. For which it uses group signature and dynamic broadcast encryption techniques such that any user in a group can share the information in a secured manner. Additionally the permission option is proposed for the security reasons. This means the file access permissions are generated by the admin and given to the user using Role Based Access Control (RBA) algorithm. The file access permissions are read, write and delete. In this, owner can provide files with options and accepts the users using that option. The revocation of cloud user is a function generated by the Admin for security purpose. The encryption computational cost and storage overhead is not dependent on the number of users revoked. We analyze the security by proofs and produce the cloud efficiency report using cloudsim.

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Messages addressed to specific users can be decrypted by Key Generation Centre (KGC) by generating their private keys. Data owner wants the data to be delivered only to specified user and not to unauthorized person that is the data owner makes their private data accessible only to authorized person. We propose attribute based encryption and escrow problem which means written agreement delivered to a third party to overcome this problem. Attribute based Encryption (ABE) is a type of public-key encryption in which the private key of a user and the cipher text are dependent upon attributes. It is a promising cryptographic approach.

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In an organization specifically as virtual as cloud there is need for access control systems to constrain users direct or backhanded action that could lead to breach of security. In cloud, apart from owner access to confidential data the third party auditing and accounting is done which could stir up further data leaks. To control such data leaks and integrity, in past several security policies based on role, identity and user attributes were proposed and found ineffective since they depend on static policies which do not monitor data access and its origin. Provenance on the other hand tracks data usage and its origin which proves the authenticity of data. To employ provenance in a real time system like cloud, the service provider needs to store metadata on the subject of data alteration which is universally called as the Provenance Information. This paper presents a provenance-policy based access control model which is designed and integrated with the system that not only makes data auditable but also incorporates accountability for data alteration events.

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原版一模一样【微信：741003700 】【(csu毕业证书)查尔斯特大学毕业证硕士学历】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma 1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700 留信网认证的作用: 1:该专业认证可证明留学生真实身份 2:同时对留学生所学专业登记给予评定 3:国家专业人才认证中心颁发入库证书 4:这个认证书并且可以归档倒地方 5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息 6:个人职称评审加20分 7:个人信誉贷款加10分 8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才

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Harnessing WebAssembly for Real-time Stateless Streaming Pipelines

Christina Lin

Traditionally, dealing with real-time data pipelines has involved significant overhead, even for straightforward tasks like data transformation or masking. However, in this talk, we’ll venture into the dynamic realm of WebAssembly (WASM) and discover how it can revolutionize the creation of stateless streaming pipelines within a Kafka (Redpanda) broker. These pipelines are adept at managing low-latency, high-data-volume scenarios.

一比一原版(SFU毕业证)西蒙菲莎大学毕业证成绩单如何办理

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哪里办理(csu毕业证书)查尔斯特大学毕业证硕士学历原版一模一样

bank management system in java and mysql report1.pdf

Harnessing WebAssembly for Real-time Stateless Streaming Pipelines

一比一原版(SFU毕业证)西蒙菲莎大学毕业证成绩单如何办理

PROJECT FORMAT FOR EVS AMITY UNIVERSITY GWALIOR.ppt

sieving analysis and results interpretation

Swimming pool mechanical components design.pptx

Tutorial for 16S rRNA Gene Analysis with QIIME2.pdf

Building Electrical System Design & Installation

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Governing Equations for Fundamental Aerodynamics_Anderson2010.pdf

Literature Review Basics and Understanding Reference Management.pptx

KuberTENes Birthday Bash Guadalajara - K8sGPT first impressions

SHARED AUTHORITY BASED PRIVACY-PRESERVING AUTHENTICATION PROTOCOL IN CLOUD COMPUTING

1. SHARED AUTHORITY BASED PRIVACY-PRESERVING AUTHENTICATION PROTOCOL IN CLOUD COMPUTING ABSTRACT Cloud computing is an emerging data interactive paradigm to realize users’ data remotely stored in an online cloud server. Cloud services provide great conveniences for the users to enjoy the on-demand cloud applications without considering the local infrastructure limitations. During the data accessing, different users may be in a collaborative relationship, and thus data sharing becomes significant to achieve productive benefits. The existing security solutions mainly focus on the authentication to realize that a user’s privative data cannot be illegally accessed, but neglect a subtle privacy issue during a user challenging the cloud server to request other users for data sharing. The challenged access request itself may reveal the user’s privacy no matter whether or not it can obtain the data access permissions. In this paper, we propose a shared authority based privacy-preserving authentication protocol (SAPA) to address above privacy issue for cloud storage. In the SAPA, 1) shared access authority is achieved by anonymous access request matching mechanism with security and privacy considerations (e.g., authentication, data anonymity, user privacy, and forward security); 2) attribute based access control is adopted to realize that the user can only access its own data fields; 3) proxy re- encryption is applied to provide data sharing among the multiple users. Meanwhile, universal composability (UC) model is established to prove that the SAPA theoretically has the design correctness. It indicates that the proposed protocol is attractive for multi-user collaborative cloud applications.

SHARED AUTHORITY BASED PRIVACY-PRESERVING AUTHENTICATION PROTOCOL IN CLOUD COMPUTING

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