scholarly journals Towards Hybrid Cloud Service Certification Models

2014 ◽  
Author(s):  
Spyros Katopodis ◽  
George Spanoudakis ◽  
Khaled Mahbub
Keyword(s):  
Cloud Service ◽  
Hybrid Cloud

scholarly journals Privacy-aware relationship semantics–based XACML access control model for electronic health records in hybrid cloud

2019 ◽  
Vol 15 (6) ◽  
pp. 155014771984605 ◽  
Author(s):  
Tehsin Kanwal ◽  
Ather Abdul Jabbar ◽  
Adeel Anjum ◽  
Saif UR Malik ◽  
Abid Khan ◽  
...  
Keyword(s):  
Access Control ◽  
Electronic Health Records ◽  
Cloud Service ◽  
Control Model ◽  
Hybrid Cloud ◽  
Access Control Model ◽  
Health Records ◽  
Fine Grained ◽  
Electronic Health ◽  
Records Access

State-of-the-art progress in cloud computing encouraged the healthcare organizations to outsource the management of electronic health records to cloud service providers using hybrid cloud. A hybrid cloud is an infrastructure consisting of a private cloud (managed by the organization) and a public cloud (managed by the cloud service provider). The use of hybrid cloud enables electronic health records to be exchanged between medical institutions and supports multipurpose usage of electronic health records. Along with the benefits, cloud-based electronic health records also raise the problems of security and privacy specifically in terms of electronic health records access. A comprehensive and exploratory analysis of privacy-preserving solutions revealed that most current systems do not support fine-grained access control or consider additional factors such as privacy preservation and relationship semantics. In this article, we investigated the need of a privacy-aware fine-grained access control model for the hybrid cloud. We propose a privacy-aware relationship semantics–based XACML access control model that performs hybrid relationship and attribute-based access control using extensible access control markup language. The proposed approach supports fine-grained relation-based access control with state-of-the-art privacy mechanism named Anatomy for enhanced multipurpose electronic health records usage. The proposed (privacy-aware relationship semantics–based XACML access control model) model provides and maintains an efficient privacy versus utility trade-off. We formally verify the proposed model (privacy-aware relationship semantics–based XACML access control model) and implemented to check its effectiveness in terms of privacy-aware electronic health records access and multipurpose utilization. Experimental results show that in the proposed (privacy-aware relationship semantics–based XACML access control model) model, access policies based on relationships and electronic health records anonymization can perform well in terms of access policy response time and space storage.

SECURE COLLABORATIVE INTEGRITY VERIFICATION FOR HYBRID CLOUD ENVIRONMENTS

2012 ◽  
Vol 21 (03) ◽  
pp. 165-197 ◽  
Author(s):  
YAN ZHU ◽  
SHANBIAO WANG ◽  
HONGXIN HU ◽  
GAIL-JOON AHN ◽  
DI MA
Keyword(s):  
Performance Optimization ◽  
Service Providers ◽  
Cloud Service ◽  
Data Migration ◽  
Hybrid Cloud ◽  
Data Outsourcing ◽  
Zero Knowledge ◽  
Internal Resources ◽  
Integrity Verification ◽  
Small Constant

A hybrid cloud is a cloud computing environment in which an organization provides and manages some internal resources and has others provided externally. However, this new environment could bring irretrievable losses to the clients due to a lack of integrity verification mechanism for distributed data outsourcing. To support scalable service and data migration, in this paper we address the construction of a collaborative integrity verification mechanism in hybrid clouds where we consider the existence of multiple cloud service providers to collaboratively store and maintain the clients' data. We propose a collaborative provable data possession scheme adopting the techniques of homomorphic verifiable responses and hash index hierarchy. In addition, we articulate the performance optimization mechanisms for our scheme and prove the security of our scheme based on multi-prover zero-knowledge proof system, which can satisfy the properties of completeness, knowledge soundness, and zero-knowledge. Our experiments also show that our proposed solution only incurs a small constant amount of communications overhead.

scholarly journals Approach for Selecting and Integrating Cloud Services to Construct Hybrid Cloud

2020 ◽  
Vol 18 (3) ◽  
pp. 441-469
Author(s):  
Joonseok Park ◽  
Ungsoo Kim ◽  
Donggyu Yun ◽  
Keunhyuk Yeom
Keyword(s):  
Cloud Service ◽  
Application Programming Interface ◽  
Cloud Services ◽  
Hybrid Cloud ◽  
Public And Private ◽  
Hybrid Clouds ◽  
Integrated Environment ◽  
Application Programming ◽  
Service Broker ◽  
Programming Interface

Abstract With the popularization of cloud computing, various cloud services have emerged, and hybrid clouds that can take advantage of combining public and private clouds are attracting attention. However, because of their variety, determining a combination of cloud services suited to the user’s current environment and requirements is expensive when deploying a hybrid cloud. Even if the required services are available, there is a lack of tools to connect them, manage them in batches, and utilize the integrated environment. To solve these problems, this paper proposes a cloud selection and integration process (C-SIP), which selects and integrates a combination of cloud services through a hybrid cloud service broker (hybrid CSB), which is an automation solution supporting hybrid cloud deployment. Moreover, the proposed method is realized using a script including the application programming interface of each cloud service. The proposed C-SIP will be used as a core approach toward the hybrid CSB, which is expected to facilitate the introduction of hybrid clouds and the acquisition of cloud strategies.

Dynamic Service Provisioning and Selection for Satisfying Cloud Applications and Cloud Providers in Hybrid Cloud

2017 ◽  
Vol 26 (04) ◽  
pp. 1750005 ◽  
Author(s):  
Xu Lijun ◽  
Li Chunlin
Keyword(s):  
Resource Constraints ◽  
Cloud Model ◽  
Cloud Service ◽  
Cloud Provider ◽  
Service Provisioning ◽  
Hybrid Cloud ◽  
Public Cloud ◽  
Private Cloud ◽  
Cloud Users ◽  
Cloud User

The paper presents a hybrid cloud service provisioning and selection optimization scheme, and proposes a hybrid cloud model which consists of hybrid cloud users, private cloud and public cloud. This scheme aims to effectively provide cloud service and allocate cloud resources, such that the system utility can be maximized subject to public cloud resource constraints and hybrid cloud users constraints. The paper makes use of a utility-driven approach to solve interaction among private cloud user, hybrid cloud service provider and public cloud provider in hybrid cloud environment. The paper presents hybrid cloud service provisioning and selection algorithm in hybrid cloud. The hybrid cloud market consists of hybrid cloud user agent, hybrid cloud service agent and hybrid cloud agent, which represent the interests of different roles. The experiments are designed to compare the performance of proposed algorithm with the other related work.

scholarly journals HNSciCloud, a Hybrid Cloud for Science

2019 ◽  
Vol 214 ◽  
pp. 09006
Author(s):  
João Fernandes ◽  
Bob Jones ◽  
Sergey Yakubov ◽  
Andrea Chierici
Keyword(s):  
Service Providers ◽  
Cloud Service ◽  
Data Access ◽  
Cloud Services ◽  
Use Cases ◽  
Hybrid Cloud ◽  
Network Bandwidth ◽  
It Resources ◽  
Cloud Service Providers ◽  
Research Organisations

Helix Nebula Science Cloud (HNSciCloud) has developed a hybrid cloud platform that links together commercial cloud service providers and research organizations’ in-house IT resources via the GEANT network. The platform offers data management capabilities with transparent data access where applications can be deployed with no modifications on both sides of the hybrid cloud and with compute services accessible via eduGAIN [1] and ELIXIR [2] federated identity and access management systems. In addition, it provides support services, account management facilities, full documentation and training. The cloud services are being tested by a group of 10 research organisations from across Europe [3], against the needs of use-cases from seven ESFRI infrastructures [4]. The capacity procured by ten research organisations from the commercial cloud service providers to support these use-cases during 2018 exceeds twenty thousand cores and two petabytes of storage with a network bandwidth of 40Gbps. All the services are based on open source implementations that do not require licenses in order to be deployed on the in-house IT resources of research organisations connected to the hybrid platform. An early adopter scheme has been put in place so that more research organisations can connect to the platform and procure additional capacity to support their research programmes.

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