CloudArmor: Supporting Reputation-based  Trust Management for Cloud Services(2015)

ABSTRACT

Trust management is one of the most challenging issues for the adoption and growth of cloud computing. The highly dynamic, distributed, and non-transparent nature of cloud services introduces several challenging issues such as privacy, security, and availability. Preserving consumers’ privacy is not an easy task due to the sensitive information involved in the interactions between consumers and the trust management service. Protecting cloud services against their malicious users (e.g., such users might give misleading feedback to disadvantage a particular cloud service) is a difficult problem. Guaranteeing the availability of the trust management service is another significant challenge because of the dynamic nature of cloud environments. In this article, we describe the design and implementation of Cloud Armor, a reputation-based trust management framework that provides a set of functionalities to deliver Trust as a Service (TaaS), which includes i) a novel protocol to prove the credibility of trust feedbacks and preserve users’ privacy, ii) an adaptive and robust credibility model for measuring the credibility of trust feedbacks to protect cloud services from malicious users and to compare the trustworthiness of cloud services, and iii) an availability model to manage the availability of the decentralized implementation of the trust management service. The feasibility and benefits of our approach have been validated by a prototype and experimental studies using a collection of real-world trust feedbacks on cloud services.

EXISTING SYSTEM:

                        In the Existing system, the approach is developed using a centralized architecture and uses compliant management technique to establish trust between cloud service users and cloud service providers. Unlike previous works that use policy-based trust management techniques, we assess the trustworthiness of a cloud service using reputation-based trust management techniques. Reputation represents a high influence that cloud service users have over the trust management system, especially that the opinions of the various cloud service users can dramatically influence the reputation of a cloud service either positively or negatively. Some research efforts also consider the reputation based trust management techniques.

PROPOSED SYSTEM:

In the proposed system, the system is presented novel techniques that help in detecting reputation based attacks and allowing users to effectively identify trustworthy cloud services. In particular, we introduce a credibility model that not only identifies misleading trust feedbacks from collusion attacks but also detects Sybil attacks no matter these attacks take place in a long or short period of time  (i.e., strategic or occasional attacks respectively). We also develop an availability model that maintains the trust management service at a desired level. We have collected a large number of consumer’s trust feedbacks given on real-world cloud services (i.e., over 10,000 records) to evaluate our proposed techniques.

In a nutshell, the salient features of Cloud Armor are:

1.  Zero-Knowledge Credibility Proof Protocol (ZKC2P).

2.   A Credibility Model.

3.   An Availability Model.

SYSTEM SPECIFICATION

Hardware Requirements:

•         System                 :   Pentium IV 3.4 GHz.

•         Hard Disk             :   40 GB.

•         Monitor                :   14’ Colour Monitor.

•         Mouse                  :   Optical Mouse.

•         Ram                      :   1 GB.

Software Requirements:

•         Operating system           :   Windows Family.

•         Coding Language :   J2EE (JSP,Servlet,Java Bean)

•         Data Base             :   My Sql.

•         IDE                       :  Eclipse - Galileo

•         Web Server            :  Tomcat 5.0/6.0

•         Web Designing       : Dream Viewer

•         Documentation       : MS Office