Current cloud computing systems pose serious limitation to protecting users' data confidentiality. Since users' sensitive data is presented in unencrypted forms to remote machines owned and operated by third party service providers, the risks of unauthorized disclosure of the users' sensitive data by service providers may be quite high. There are many techniques for protecting users' data from outside attackers, but currently no effective way is available for protecting users' sensitive data from service providers in cloud computing. In this paper, an approach is presented to protecting the confidentiality of users' data from service providers, and ensures service providers cannot collect users' confidential data while the data is processed and stored in cloud computing systems. Our approach has three major aspects: (1) separating software service providers and infrastructure service providers in cloud computing, (2) hiding information about the owners of data, and (3) data obfuscation. An example to show how our approach can protect the confidentiality of users' data from service providers in cloud computing is given.
{"title":"Protection of users' data confidentiality in cloud computing","authors":"S. Yau, Ho G. An","doi":"10.1145/2020723.2020734","DOIUrl":"https://doi.org/10.1145/2020723.2020734","url":null,"abstract":"Current cloud computing systems pose serious limitation to protecting users' data confidentiality. Since users' sensitive data is presented in unencrypted forms to remote machines owned and operated by third party service providers, the risks of unauthorized disclosure of the users' sensitive data by service providers may be quite high. There are many techniques for protecting users' data from outside attackers, but currently no effective way is available for protecting users' sensitive data from service providers in cloud computing. In this paper, an approach is presented to protecting the confidentiality of users' data from service providers, and ensures service providers cannot collect users' confidential data while the data is processed and stored in cloud computing systems. Our approach has three major aspects: (1) separating software service providers and infrastructure service providers in cloud computing, (2) hiding information about the owners of data, and (3) data obfuscation. An example to show how our approach can protect the confidentiality of users' data from service providers in cloud computing is given.","PeriodicalId":20631,"journal":{"name":"Proceedings of the 8th Asia-Pacific Symposium on Internetware","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77543741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A lot of network services and applications are being designed to support quality-of-service (QoS) routing. One of the key problems is to find a feasible path that satisfies multiple QoS requirements, i.e., Multi-Constrained Path (MCP) problem which is known to be NP-complete. Many heuristic and approximation algorithms have been proposed to solve this problem. However, most of them converted it into the classic shortest path problem by transforming multiple QoS weights into single weight. In this paper, we propose a binary graph reduction (BGR) algorithm to convert network graph into a simplified graph by removing redundant edges before constructing a routing path. BGR improves system performance from two aspects: i) BGR decreases the decision-making time, which then decreases the delay of end users; ii) BGR removes some abnormal anti-heuristic redundant edges from network graph, so that the actual routing algorithm could get a better result. We use a multimedia delivery system to illustrate these advantages in this paper. Simulation results also approve the efficiency of the proposed BGR algorithm.
{"title":"A binary graph reduction algorithm for multi-constrained QoS routing","authors":"S. Zhang, Zhuzhong Qian, Sanglu Lu, Daoxu Chen","doi":"10.1145/2020723.2020725","DOIUrl":"https://doi.org/10.1145/2020723.2020725","url":null,"abstract":"A lot of network services and applications are being designed to support quality-of-service (QoS) routing. One of the key problems is to find a feasible path that satisfies multiple QoS requirements, i.e., Multi-Constrained Path (MCP) problem which is known to be NP-complete. Many heuristic and approximation algorithms have been proposed to solve this problem. However, most of them converted it into the classic shortest path problem by transforming multiple QoS weights into single weight. In this paper, we propose a binary graph reduction (BGR) algorithm to convert network graph into a simplified graph by removing redundant edges before constructing a routing path. BGR improves system performance from two aspects: i) BGR decreases the decision-making time, which then decreases the delay of end users; ii) BGR removes some abnormal anti-heuristic redundant edges from network graph, so that the actual routing algorithm could get a better result. We use a multimedia delivery system to illustrate these advantages in this paper. Simulation results also approve the efficiency of the proposed BGR algorithm.","PeriodicalId":20631,"journal":{"name":"Proceedings of the 8th Asia-Pacific Symposium on Internetware","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83996688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The openness, heterogeneity, dynamism and autonomy characteristics of Internetware bring challenges to the management. In this paper, we introduce a web-delivered management service framework to manage Internetware systems. Through this framework, the Internetware systems can be managed centrally, and management functions can be easily added and applied by publishing and subscribing management services. The key innovations of this framework are: using an abstract managed object model to describe the units to be managed and their relationships, and every management function is manipulated as a service which can be further composed into processes. The benefits are management services and processes can be published and subscribed by administrators and domain experts, and the services can be delivered remotely. Both the management service and the process can be reused thus the total management cost can be reduced.
{"title":"A collaborative management as a service framework for managing Internetware systems","authors":"Tiancheng Liu, Ying Li, Xinhui Li","doi":"10.1145/1640206.1640218","DOIUrl":"https://doi.org/10.1145/1640206.1640218","url":null,"abstract":"The openness, heterogeneity, dynamism and autonomy characteristics of Internetware bring challenges to the management. In this paper, we introduce a web-delivered management service framework to manage Internetware systems. Through this framework, the Internetware systems can be managed centrally, and management functions can be easily added and applied by publishing and subscribing management services. The key innovations of this framework are: using an abstract managed object model to describe the units to be managed and their relationships, and every management function is manipulated as a service which can be further composed into processes. The benefits are management services and processes can be published and subscribed by administrators and domain experts, and the services can be delivered remotely. Both the management service and the process can be reused thus the total management cost can be reduced.","PeriodicalId":20631,"journal":{"name":"Proceedings of the 8th Asia-Pacific Symposium on Internetware","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77346690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Since many web sites provide their own services and a web browser becomes a rich client platform, a new type of web application that is constructed by assembling web-delivered services in web browser, called Service-Oriented Rich Client (SoRC), emerges. Typical SoRC applications include web OSes and mashups. Due to the increasing complexity of SoRC, we propose a new type of middleware, which is embedded in web browsers and encapsulates reusable solutions for common problems of SoRC, including a container for component instances, a set of mechanisms for interactions within the browser, between the browser and server. Different SoRC applications can be constructed easily in high quality based on this middleware. We implement a prototype of the Internetware browser middleware, and then build two SoRC applications based on this prototype: 1) a web-based BPEL editor, iServiceStudio; 2) a mashup environment, iMashup.
{"title":"Service-oriented rich client applications supported by Internetware browser middleware","authors":"Qi Zhao, Gang Huang, Hong Mei","doi":"10.1145/1640206.1640227","DOIUrl":"https://doi.org/10.1145/1640206.1640227","url":null,"abstract":"Since many web sites provide their own services and a web browser becomes a rich client platform, a new type of web application that is constructed by assembling web-delivered services in web browser, called Service-Oriented Rich Client (SoRC), emerges. Typical SoRC applications include web OSes and mashups. Due to the increasing complexity of SoRC, we propose a new type of middleware, which is embedded in web browsers and encapsulates reusable solutions for common problems of SoRC, including a container for component instances, a set of mechanisms for interactions within the browser, between the browser and server. Different SoRC applications can be constructed easily in high quality based on this middleware. We implement a prototype of the Internetware browser middleware, and then build two SoRC applications based on this prototype: 1) a web-based BPEL editor, iServiceStudio; 2) a mashup environment, iMashup.","PeriodicalId":20631,"journal":{"name":"Proceedings of the 8th Asia-Pacific Symposium on Internetware","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80052977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The increasingly complex environments in which software systems are running today have made runtime software quality unstable and hardly in an optimal state, especially for those systems in open and dynamic environments, e.g. Internetware. In this paper, we explore the effectiveness of software cybernetics and feedback control theory in runtime software quality optimization. We propose a method of runtime quality optimization by using feedback control theory. Specially, we consider the problem of runtime optimization for a specific quality attribute, namely throughput, for Web-based systems. We design a double-layer feedback control model for the problem and implement the runtime optimization control method. In the method, runtime feedbacks are collected and used by the control model to adjust related control parameters. The experimental study has demonstrated the effectiveness of software cybernetics and feedback control theory in runtime quality optimization.
{"title":"Towards runtime optimization of software quality based on feedback control theory","authors":"Bihuan Chen, Xin Peng, Wenyun Zhao","doi":"10.1145/1640206.1640216","DOIUrl":"https://doi.org/10.1145/1640206.1640216","url":null,"abstract":"The increasingly complex environments in which software systems are running today have made runtime software quality unstable and hardly in an optimal state, especially for those systems in open and dynamic environments, e.g. Internetware. In this paper, we explore the effectiveness of software cybernetics and feedback control theory in runtime software quality optimization. We propose a method of runtime quality optimization by using feedback control theory. Specially, we consider the problem of runtime optimization for a specific quality attribute, namely throughput, for Web-based systems. We design a double-layer feedback control model for the problem and implement the runtime optimization control method. In the method, runtime feedbacks are collected and used by the control model to adjust related control parameters. The experimental study has demonstrated the effectiveness of software cybernetics and feedback control theory in runtime quality optimization.","PeriodicalId":20631,"journal":{"name":"Proceedings of the 8th Asia-Pacific Symposium on Internetware","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79373639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Trusted resource dissemination over Internet is still an open problem. However, it is crucial to the success of Internet-based or Internetware systems. We propose an approach that supports trusted resource dissemination between Internetware nodes. In this paper, we focus on an evidence-based trustworthiness-assurance mechanism in the approach. An architecture and a protocol that enforces this approach in Internetware systems are also described.
{"title":"Trusted resource dissemination in Internetware systems","authors":"Zude Li, Xiaojun Ye, Jianmin Wang","doi":"10.1145/1640206.1640223","DOIUrl":"https://doi.org/10.1145/1640206.1640223","url":null,"abstract":"Trusted resource dissemination over Internet is still an open problem. However, it is crucial to the success of Internet-based or Internetware systems. We propose an approach that supports trusted resource dissemination between Internetware nodes. In this paper, we focus on an evidence-based trustworthiness-assurance mechanism in the approach. An architecture and a protocol that enforces this approach in Internetware systems are also described.","PeriodicalId":20631,"journal":{"name":"Proceedings of the 8th Asia-Pacific Symposium on Internetware","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78001723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Stakeholders play critical roles in requirements elicitation, since they are the source of requirements, and the quality of elicited requirements is significantly influenced by the degree of stakeholders' participation and collaboration in elicitation. However, requirements elicitation is often obstructed due to the diversity in stakeholders' background and interests, especially in the different perspectives on the envisioned systems, the insufficient communication and common-understanding among them, and the different abilities to express requirements.
{"title":"A problem-driven scenario-based approach to collaborative requirement elicitation","authors":"Haiyan Zhao, Li Yi, Wei Zhang, Hong Mei","doi":"10.1145/1640206.1640228","DOIUrl":"https://doi.org/10.1145/1640206.1640228","url":null,"abstract":"Stakeholders play critical roles in requirements elicitation, since they are the source of requirements, and the quality of elicited requirements is significantly influenced by the degree of stakeholders' participation and collaboration in elicitation. However, requirements elicitation is often obstructed due to the diversity in stakeholders' background and interests, especially in the different perspectives on the envisioned systems, the insufficient communication and common-understanding among them, and the different abilities to express requirements.","PeriodicalId":20631,"journal":{"name":"Proceedings of the 8th Asia-Pacific Symposium on Internetware","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78888160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
To achieve self-healing web services composition, much work has been studied in the area of web services composition recently. However, most work addresses the problem of runtime monitoring, diagnosis and recovery in isolation. What is missing, however, is a unified solution that can be used to tackle this challenge in a principled manner. This paper presents a fresh view on self-healing web services composition. In particular, rather than building baseline system model a priori, we advocate using statistical learning theory(SLT) technique to extract it by observing the behavior of web services composition and locate the potential anomaly.
{"title":"Towards self-healing web services composition","authors":"Guoquan Wu, Jun Wei, Tao Huang","doi":"10.1145/1640206.1640221","DOIUrl":"https://doi.org/10.1145/1640206.1640221","url":null,"abstract":"To achieve self-healing web services composition, much work has been studied in the area of web services composition recently. However, most work addresses the problem of runtime monitoring, diagnosis and recovery in isolation. What is missing, however, is a unified solution that can be used to tackle this challenge in a principled manner. This paper presents a fresh view on self-healing web services composition. In particular, rather than building baseline system model a priori, we advocate using statistical learning theory(SLT) technique to extract it by observing the behavior of web services composition and locate the potential anomaly.","PeriodicalId":20631,"journal":{"name":"Proceedings of the 8th Asia-Pacific Symposium on Internetware","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77307200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Reliable multicast, the lossless dissemination of data from one sender to a group of receivers, has a wide range of important applications like software update and dissemination of stock quotes. Recently, network coding has been applied to the reliable multicast in wireless networks, where the sender encodes multiple lost packets together into one packet and uses a single retransmission to potentially recover multiple packet losses, resulting in a significant reduction of band-width consumption. In this paper, we provide a review of recent research works in this area, examine their advantages and limitations, and also present some open research challenges need to be addressed in the future.
{"title":"Reliable multicast with network coding","authors":"Kaikai Chi, Xiaohong Jiang, Baoliu Ye","doi":"10.1145/1640206.1640211","DOIUrl":"https://doi.org/10.1145/1640206.1640211","url":null,"abstract":"Reliable multicast, the lossless dissemination of data from one sender to a group of receivers, has a wide range of important applications like software update and dissemination of stock quotes. Recently, network coding has been applied to the reliable multicast in wireless networks, where the sender encodes multiple lost packets together into one packet and uses a single retransmission to potentially recover multiple packet losses, resulting in a significant reduction of band-width consumption. In this paper, we provide a review of recent research works in this area, examine their advantages and limitations, and also present some open research challenges need to be addressed in the future.","PeriodicalId":20631,"journal":{"name":"Proceedings of the 8th Asia-Pacific Symposium on Internetware","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85012176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
After decades of engineering development and infrastructural investment, Internet connections have become a commodity product in many countries, and Internetscale "cloud computing" has started to compete with traditional software business through its technological advantages and economy of scale. Cloud computing is a promising enabling technology of Internetware. One distinct characteristic of cloud computing is the global integration of data, logic, and users, but such integration magnifies a sharp concern about privacy, which is one of the most frequently cited reasons by enterprises for not migrating to cloud-based solutions. We argue that cloud-based systems should include privacy as a fundamental design goal, and that privacy in a cloud environment is bidirectional, covering both end users and application providers. End users need privacy-aware software services that prevent their private data from being exposed to other users or the cloud providers. Application providers need a privacy-protected testing methodology to prevent the companies' internal activities and product features from leaking to external users. Focusing on privacy protection, we discuss the research challenges in this unique design space, and explore potential solutions for enhancing privacy protection in several important components of the system.
{"title":"Constructing and testing privacy-aware services in a cloud computing environment: challenges and opportunities","authors":"Lin Gu, S. Cheung","doi":"10.1145/1640206.1640208","DOIUrl":"https://doi.org/10.1145/1640206.1640208","url":null,"abstract":"After decades of engineering development and infrastructural investment, Internet connections have become a commodity product in many countries, and Internetscale \"cloud computing\" has started to compete with traditional software business through its technological advantages and economy of scale. Cloud computing is a promising enabling technology of Internetware. One distinct characteristic of cloud computing is the global integration of data, logic, and users, but such integration magnifies a sharp concern about privacy, which is one of the most frequently cited reasons by enterprises for not migrating to cloud-based solutions. We argue that cloud-based systems should include privacy as a fundamental design goal, and that privacy in a cloud environment is bidirectional, covering both end users and application providers. End users need privacy-aware software services that prevent their private data from being exposed to other users or the cloud providers. Application providers need a privacy-protected testing methodology to prevent the companies' internal activities and product features from leaking to external users. Focusing on privacy protection, we discuss the research challenges in this unique design space, and explore potential solutions for enhancing privacy protection in several important components of the system.","PeriodicalId":20631,"journal":{"name":"Proceedings of the 8th Asia-Pacific Symposium on Internetware","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85437633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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