Visible to the public Biblio

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2021-05-26
Wah Myint, Phyo Wah, Hlaing, Swe Zin, Htoon, Ei Chaw.  2020.  EAC: Encryption Access Control Scheme for Policy Revocation in Cloud Data. 2020 International Conference on Advanced Information Technologies (ICAIT). :182—187.

Since a lot of information is outsourcing into cloud servers, data confidentiality becomes a higher risk to service providers. To assure data security, Ciphertext Policy Attributes-Based Encryption (CP-ABE) is observed for the cloud environment. Because ciphertexts and secret keys are relying on attributes, the revocation issue becomes a challenge for CP-ABE. This paper proposes an encryption access control (EAC) scheme to fulfill policy revocation which covers both attribute and user revocation. When one of the attributes in an access policy is changed by the data owner, the authorized users should be updated immediately because the revoked users who have gained previous access policy can observe the ciphertext. Especially for data owners, four types of updating policy levels are predefined. By classifying those levels, each secret token key is distinctly generated for each level. Consequently, a new secret key is produced by hashing the secret token key. This paper analyzes the execution times of key generation, encryption, and decryption times between non-revocation and policy revocation cases. Performance analysis for policy revocation is also presented in this paper.

2021-05-13
Liu, Xinlin, Huang, Jianhua, Luo, Weifeng, Chen, Qingming, Ye, Peishan, Wang, Dingbo.  2020.  Research on Attack Mechanism using Attack Surface. 2020 IEEE International Conference on Artificial Intelligence and Computer Applications (ICAICA). :137–141.
A approach to research on the attack mechanism designs through attack surface technology due to the complexity of the attack mechanism. The attack mechanism of a mimic architecture is analyzed in a relative way using attack surface metrics to indicate whether mimic architectures are safer than non-mimic architectures. The definition of the architectures attack surface in terms of the mimic brackets along three abstract dimensions referenced the system attack surface. The larger the attack surface, the more likely the architecture will be attacked.
2021-03-29
Kummerow, A., Monsalve, C., Rösch, D., Schäfer, K., Nicolai, S..  2020.  Cyber-physical data stream assessment incorporating Digital Twins in future power systems. 2020 International Conference on Smart Energy Systems and Technologies (SEST). :1—6.

Reliable and secure grid operations become more and more challenging in context of increasing IT/OT convergence and decreasing dynamic margins in today's power systems. To ensure the correct operation of monitoring and control functions in control centres, an intelligent assessment of the different information sources is necessary to provide a robust data source in case of critical physical events as well as cyber-attacks. Within this paper, a holistic data stream assessment methodology is proposed using an expert knowledge based cyber-physical situational awareness for different steady and transient system states. This approach goes beyond existing techniques by combining high-resolution PMU data with SCADA information as well as Digital Twin and AI based anomaly detection functionalities.

2021-01-11
Tekinerdoğan, B., Özcan, K., Yağız, S., Yakın, İ.  2020.  Systems Engineering Architecture Framework for Physical Protection Systems. 2020 IEEE International Symposium on Systems Engineering (ISSE). :1–8.
A physical protection system (PPS) integrates people, procedures, and equipment for the protection of assets or facilities against theft, sabotage, or other malevolent intruder attacks. In this paper we focus on the architecture modeling of PPS to support the communication among stakeholders, analysis and guiding the systems development activities. A common practice for modeling architecture is by using an architecture framework that defines a coherent set of viewpoints. Existing systems engineering modeling approaches appear to be too general and fail to address the domain-specific aspects of PPSs. On the other hand, no dedicated architecture framework approach has been provided yet to address the specific concerns of PPS. In this paper, we present an architecture framework for PPS (PPSAF) that has been developed in a real industrial context focusing on the development of multiple PPSs. The architecture framework consists of six coherent set of viewpoints including facility viewpoint, threats and vulnerabilities viewpoint, deterrence viewpoint, detection viewpoint, delay viewpoint, and response viewpoint. We illustrate the application of the architecture framework for the design of a PPS architecture of a building.
2020-12-11
Xie, J., Zhang, M., Ma, Y..  2019.  Using Format Migration and Preservation Metadata to Support Digital Preservation of Scientific Data. 2019 IEEE 10th International Conference on Software Engineering and Service Science (ICSESS). :1—6.

With the development of e-Science and data intensive scientific discovery, it needs to ensure scientific data available for the long-term, with the goal that the valuable scientific data should be discovered and re-used for downstream investigations, either alone, or in combination with newly generated data. As such, the preservation of scientific data enables that not only might experiment be reproducible and verifiable, but also new questions can be raised by other scientists to promote research and innovation. In this paper, we focus on the two main problems of digital preservation that are format migration and preservation metadata. Format migration includes both format verification and object transformation. The system architecture of format migration and preservation metadata is presented, mapping rules of object transformation are analyzed, data fixity and integrity and authenticity, digital signature and so on are discussed and an example is shown in detail.

2020-08-17
Myint, Phyo Wah Wah, Hlaing, Swe Zin, Htoon, Ei Chaw.  2019.  Policy-based Revolutionary Ciphertext-policy Attributes-based Encryption. 2019 International Conference on Advanced Information Technologies (ICAIT). :227–232.
Ciphertext-policy Attributes-based Encryption (CP-ABE) is an encouraging cryptographic mechanism. It behaves an access control mechanism for data security. A ciphertext and secret key of user are dependent upon attributes. As a nature of CP-ABE, the data owner defines access policy before encrypting plaintext by his right. Therefore, CP-ABE is suitable in a real environment. In CP-ABE, the revocation issue is demanding since each attribute is shared by many users. A policy-based revolutionary CP-ABE scheme is proposed in this paper. In the proposed scheme, revocation takes place in policy level because a policy consists of threshold attributes and each policy is identified as a unique identity number. Policy revocation means that the data owner updates his policy identity number for ciphertext whenever any attribute is changed in his policy. To be a flexible updating policy control, four types of updating policy levels are identified for the data owner. Authorized user gets a secret key from a trusted authority (TA). TA updates the secret key according to the policy updating level done by the data owner. This paper tests personal health records (PHRs) and analyzes execution times among conventional CP-ABE, other enhanced CP-ABE and the proposed scheme.
2019-12-09
Tucker, Scot.  2018.  Engineering Trust: A Graph-Based Algorithm for Modeling, Validating, and Evaluating Trust. 2018 17th IEEE International Conference On Trust, Security And Privacy In Computing And Communications/ 12th IEEE International Conference On Big Data Science And Engineering (TrustCom/BigDataSE). :1–9.
Trust is an important topic in today's interconnected world. Breaches of trust in today's systems has had profound effects upon us all, and they are very difficult and costly to fix especially when caused by flaws in the system's architecture. Trust modeling can expose these types of issues, but modeling trust in complex multi-tiered system architectures can be very difficult. Often experts have differing views of trust and how it applies to systems within their domain. This work presents a graph-based modeling methodology that normalizes the application of trust across disparate system domains allowing the modeling of complex intersystem trust relationships. An algorithm is proposed that applies graph theory to model, validate and evaluate trust in system architectures. Also, it provides the means to apply metrics to compare and prioritize the effectiveness of trust management in system and component architectures. The results produced by the algorithm can be used in conjunction with systems engineering processes to ensure both trust and the efficient use of resources.
2018-02-27
Ramadan, Q., Salnitriy, M., Strüber, D., Jürjens, J., Giorgini, P..  2017.  From Secure Business Process Modeling to Design-Level Security Verification. 2017 ACM/IEEE 20th International Conference on Model Driven Engineering Languages and Systems (MODELS). :123–133.

Tracing and integrating security requirements throughout the development process is a key challenge in security engineering. In socio-technical systems, security requirements for the organizational and technical aspects of a system are currently dealt with separately, giving rise to substantial misconceptions and errors. In this paper, we present a model-based security engineering framework for supporting the system design on the organizational and technical level. The key idea is to allow the involved experts to specify security requirements in the languages they are familiar with: business analysts use BPMN for procedural system descriptions; system developers use UML to design and implement the system architecture. Security requirements are captured via the language extensions SecBPMN2 and UMLsec. We provide a model transformation to bridge the conceptual gap between SecBPMN2 and UMLsec. Using UMLsec policies, various security properties of the resulting architecture can be verified. In a case study featuring an air traffic management system, we show how our framework can be practically applied.

2018-02-02
Whelihan, D., Vai, M., Evanich, N., Kwak, K. J., Li, J., Britton, M., Frantz, B., Hadcock, D., Lynch, M., Schafer, D. et al..  2017.  Designing agility and resilience into embedded systems. MILCOM 2017 - 2017 IEEE Military Communications Conference (MILCOM). :249–254.

Cyber-Physical Systems (CPS) such as Unmanned Aerial Systems (UAS) sense and actuate their environment in pursuit of a mission. The attack surface of these remotely located, sensing and communicating devices is both large, and exposed to adversarial actors, making mission assurance a challenging problem. While best-practice security policies should be followed, they are rarely enough to guarantee mission success as not all components in the system may be trusted and the properties of the environment (e.g., the RF environment) may be under the control of the attacker. CPS must thus be built with a high degree of resilience to mitigate threats that security cannot alleviate. In this paper, we describe the Agile and Resilient Embedded Systems (ARES) methodology and metric set. The ARES methodology pursues cyber security and resilience (CSR) as high level system properties to be developed in the context of the mission. An analytic process guides system developers in defining mission objectives, examining principal issues, applying CSR technologies, and understanding their interactions.

2017-12-12
Diaz, J. S. B., Medeiros, C. B..  2017.  WorkflowHunt: Combining Keyword and Semantic Search in Scientific Workflow Repositories. 2017 IEEE 13th International Conference on e-Science (e-Science). :138–147.

Scientific datasets and the experiments that analyze them are growing in size and complexity, and scientists are facing difficulties to share such resources. Some initiatives have emerged to try to solve this problem. One of them involves the use of scientific workflows to represent and enact experiment execution. There is an increasing number of workflows that are potentially relevant for more than one scientific domain. However, it is hard to find workflows suitable for reuse given an experiment. Creating a workflow takes time and resources, and their reuse helps scientists to build new workflows faster and in a more reliable way. Search mechanisms in workflow repositories should provide different options for workflow discovery, but it is difficult for generic repositories to provide multiple mechanisms. This paper presents WorkflowHunt, a hybrid architecture for workflow search and discovery for generic repositories, which combines keyword and semantic search to allow finding relevant workflows using different search methods. We validated our architecture creating a prototype that uses real workflows and metadata from myExperiment, and compare search results via WorkflowHunt and via myExperiment's search interface.

2017-03-08
Lian, Y..  2015.  Challenges in the design of self-powered wearable wireless sensors for healthcare Internet-of-Things. 2015 IEEE 11th International Conference on ASIC (ASICON). :1–4.

The design of low power chip for IoT applications is very challenge, especially for self-powered wireless sensors. Achieving ultra low power requires both system level optimization and circuit level innovation. This paper presents a continuous-in-time and discrete-in-amplitude (CTDA) system architecture that facilitates adaptive data rate sampling and clockless implementation for a wireless sensor SoC.