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An Enhanced Description Assistant for SOAP Message Exchange in SOA
Pham Phuoc Hung,Jeongyong Byun 한국정보과학회 2011 한국정보과학회 학술발표논문집 Vol.38 No.1A
When SOAP messages carry vital business information, their integrity and confidentiality needs to be preserved. Concerns have been raised due to XML Rewriting attacks on SOAP message which create a foundation for typical faults in SOAP messages and make it vulnerable to use in Web Service environment. We have already provided a solution to tackle this problem on integrity of SOAP messages in earlier works by proposing a system called System Description Assistant. That system was able to identify and fix typical faults in SOAP messages. This paper mainly reflects future directions of our previous researches and enhances previous ones by adding more comprehensive functions to detect and possibly fix faults occurred due to XML rewriting attacks.
웹서비스 보안에서 SOAP 메시지에 관한 삽입 및 변경 공격에 대한 방어법
Pham Phuoc Hung,Aziz Nasridinov,Lin Qing,변정용(Jeong Yong Byun) 한국정보과학회 2012 정보과학회 컴퓨팅의 실제 논문지 Vol.18 No.3
일단 SOAP 메시지가 웹서비스간에 소통을 위하여 사용되면 그들의 무결성과 기밀성은 관찰되어야 할 필요가 있는 문제이다. 웹 환경에서 만나는 도전들은 SOAP 메시지의 XML 공격 때문에 발생해 왔다. 그것은 SOAP 메시지에서 전형적인 결점에 대한 근원이 되며, 사용하기에 많은 약점을 만든다. 불행하게도 웹서비스 중간품의 존재는 이들 결점을 규명하고 그들을 고칠 수 있게 하는데 대한 기능 한계를 제공한다. 이들 문제를 찾아서 다루기 위하여 본 논문에서 SOA에서 SOAP 메시지의 보안 약점을 탐구할 뿐만 아니라 신뢰성을 개선하고 위하여 보안 위협과 싸우기 위하여 SOAP에서 발생된 전형적인 결점을 자동으로 찾아내고 바로잡을 수 있게 하는 시스템을 제안한다. Once SOAP messages are used for the communication among web services, their integrity and confidentiality should be preserved. XML-based attacks have often been used on SOAP messages which create a foundation for typical faults and make them vulnerable to use. Web Services middleware have limitation in identifying these faults and possibly fixing them. Therefore to cope with the XML-based attacks, in this paper, we explore the security vulnerability of SOAP messages and propose a system which is able to automatically detect and fix typical faults occurred in SOAP messages due to XML Attacks.
A Novel Approach for Optimal Multimedia Data Distribution in Mobile Cloud Computing
Phuoc Hung, Pham,Aazam, Mohammad,Nguyen, Tien-Dung,Huh, Eui-Nam Hindawi Limited 2014 Advances in multimedia Vol.2014 No.-
<P>With the integration of mobile computing and cloud computing, more diverse services can be provided to the users, supporting the mobility feature of mobile computing along with the power of cloud computing. This new paradigm still faces challenges, especially in terms of performance. When it comes to multimedia data communication, thin clients (such as smart phones and tablets) suffer because of performance and power constraints. Previously done studies have trivially addressed this problem. Therefore, in our paper, we present a framework in which thick clients (laptop or desktop computers) are incorporated into mobile cloud paradigm with attention paid to user mobility. Its objective is to optimize the distribution of multimedia content between the cloud and the thin clients. Our work comes up with both numerical analysis and simulation to justify the validity and the effectiveness of the proposal approach.</P>
An Adaptive Procedure for Task Scheduling Optimization in Mobile Cloud Computing
Phuoc Hung, Pham,Huh, Eui-Nam Hindawi Limited 2015 Mathematical problems in engineering Vol.2015 No.-
<P>Nowadays, mobile cloud computing (MCC) has emerged as a new paradigm which enables offloading computation-intensive, resource-consuming tasks up to a powerful computing platform in cloud, leaving only simple jobs to the capacity-limited thin client devices such as smartphones, tablets, Apple’s iWatch, and Google Glass. However, it still faces many challenges due to inherent problems of thin clients, especially the slow processing and low network connectivity. So far, a number of research studies have been carried out, trying to eliminate these problems, yet few have been found efficient. In this paper, we present an enhanced architecture, taking advantage of collaboration of thin clients and conventional desktop or laptop computers, known as thick clients, particularly aiming at improving cloud access. Additionally, we introduce an innovative genetic approach for task scheduling such that the processing time is minimized, while considering network contention and cloud cost. Our simulation shows that the proposed approach is more cost-effective and achieves better performance compared with others.</P>
CTaG: An Innovative Approach for Optimizing Recovery Time in Cloud Environment
( Pham Phuoc Hung ),( Mohammad Aazam ),( Eui-nam Huh ) 한국인터넷정보학회 2015 KSII Transactions on Internet and Information Syst Vol.9 No.4
Traditional infrastructure has been superseded by cloud computing, due to its cost-effective and ubiquitous computing model. Cloud computing not only brings multitude of opportunities, but it also bears some challenges. One of the key challenges it faces is recovery of computing nodes, when an Information Technology (IT) failure occurs. Since cloud computing mainly depends upon its nodes, physical servers, that makes it very crucial to recover a failed node in time and seamlessly, so that the customer gets an expected level of service. Work has already been done in this regard, but it has still proved to be trivial. In this study, we present a Cost-Time aware Genetic scheduling algorithm, referred to as CTaG, not only to globally optimize the performance of the cloud system, but also perform recovery of failed nodes efficiently. While modeling our work, we have particularly taken into account the factors of network bandwidth and customer`s monetary cost. We have implemented our algorithm and justify it through extensive simulations and comparison with similar existing studies. The results show performance gain of our work over the others, in some particular scenarios.
클라우드 컴퓨팅에서 데이터 분산 최적화를 위한 방법에 대한 연구
밤복흥 ( Pham Phuoc Hung ),이슬람 ( Motaharul Islam ),고메즈마우리시오 ( Mauricio A. G. Morales ),모하마드아잠 ( Mohammad Aazam ),허의남 ( Eui-nam Huh ) 한국정보처리학회 2013 한국정보처리학회 학술대회논문집 Vol.20 No.1
Modern day despite technology advancements that manufacture a new generation of mobile devices with generous resources, the fact that they can offer only limited processing capacity still remains a painful experience.So far, a number of research studies have been carried out, trying to eliminate problems arising from shortcomings in the connection between thin clients and cloud networks, yet little have been found efficient. In this paper, we present a novel approach, taking advantage of collaboration of thin and thick clients, particularly aiming at optimizing data distribution by splitting data and utilizing cloud computing (CC) resources so that expected Quality-of-Service (QoS) requirements can be met. Moreover, we conduct simulations to evaluate our approach. Our results evaluation shows that our approach has better performance than existing approaches.
밤복흥 ( Pham Phuoc Hung ),아지즈나스리디노프 ( Aziz Nasridinov ),림청 ( Lin Qing ),변정용 ( Jeongyong Byun ) 한국정보처리학회 2011 한국정보처리학회 학술대회논문집 Vol.18 No.2
Nowadays Web Services are one of the most rapidly developed technologies and have become platform for eecommerce as well as B2B model. Therefore, when Web Services use SOAP as a protocol for communication, their security should be considered. However, those SOAP messages are prone to XML attacks that can create a foundation for typical faults and make it vulnerable to use. Unfortunately, recent researches established that solutions to deal with these problems have several limitations. In this paper, we explore attacks on SOAP messages and also provide confidentiality and integrity solutions. It is a tolerant scheme which is able to automatically detect and fix typical faults occurred in SOAP messages to combat with the security threats in order to improve its reliability.