• Journal of the Korea Institute of Information Security & Cryptology
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• v.27 no.2
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• pp.181-192
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• 2017

Internet of Things includes the whole process of collected information generated from a variety of objects, as well as analyzing and sharing it, and providing useful information services to people. This study seeks ways to improve security and safety in the areas of service security technology, ID management technology and service access control, all of which take place in the IoT environment. We have implemented the services that can design and issue C&C (Certificate and Capability) service token authentication, which is based on a public key, to improve the service security. In addition, we suggest LCRS (Left Child-Right Sibling) resource model management for the efficient control of resources when generating the resource services from the data collected from node devices. We also implemented an IoT services platform to manage URL security of the resource services and perform access control for services.

• Convergence Security Journal
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• v.8 no.4
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• pp.65-71
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• 2008

According to the capacity of hard disk drive is increasing day by day, the amount of data that forensic investigators should analyze is also increasing. This trend need tremendous time and effort in determining which files are important as evidence on computers. Using the file system APIs provided by Windows system is the easy way to identify those files. This method, however, requires a large amount of time as the number of files increase and changes the access time of files. Moreover, some files cannot be accessed due to the use of operating system. To resolve these problems, forensic analysis should be conducted by using the Master File Table (MFT). In this paper, We implement the file access program which interprets the MFT information in NTFS file system. We also extensibly compare the program with the previous method. Experimental results show that the presented program reduces the file access time then others. As a result, The file access method using MFT information is forensically sound and also alleviates the investigation time.

• Journal of IKEEE
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• v.27 no.4
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• pp.548-555
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• 2023

With the advancement of the internet, the use of personal information in online interactions has increased, underscoring the significance of data protection. Breaches of personal data due to unauthorized access can result in psychological and financial damage to individuals, and may even enable wide-ranging societal attacks aimed at those associated with the victims. In response to such threats, there is active research into security measures using blockchain to safeguard personal information. This study proposes a system that uses middleware and IAM (Identity and Access Management) services to protect personal information in a BaaS (Blockchain as a Service) environment where blockchain is provided via the Internet. The middleware operates on servers where IAM roles and policies are applied, authenticates users, and performs access control to allow only legitimate users to access blockchain data existing in the cloud. Additionally, to understand the impact of the proposed personal information protection method on the system, we measure the response time according to the time taken and the number of users under three assumed scenarios, and compare the proposed method and research related to personal information protection using blockchain in terms of security characteristics such as idea, type of blockchain, authentication, and confidentiality.

• Journal of the Korea Society of Computer and Information
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• v.10 no.1 s.33
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• pp.141-148
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• 2005

Nowadays, it is possible to access sharing data from unauthorized People. Access control prevents unauthorized access to computing resource, information resources, and communication resources. It is very important to defend the critical system resources from the unauthorized. The importance of this study is to develop Protection Profile for Mandatory Access Control (MAC) that satisfies TCSEC assurance level B2. protection profile for MAC will help developers to use reference for the development of requirements and formulating security specification.

• Journal of information and communication convergence engineering
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• v.1 no.4
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• pp.213-216
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• 2003

A VPN is widely used in a communications environment which access is controlled to permit peer connections only within a defined community of interest. It is constructed through some form of partitioning of a common underlying communication medium, where this underlying communications medium provides services to the network on a non-exclusive basis. In this paper, we have analyzed a variety of architecture to implement Giga bps VPN system. The proposed architecture will satisfy the needs of clients who adopt Giga bps VPN system in the various environments.

• Convergence Security Journal
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• v.3 no.3
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• pp.67-74
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• 2003

Home network technologies which interconnect various wire and wireless home appliances, access network technologies and service offer technologies are continuing growth. To provide secure services in the home, home network environment, access network environment, and various service and contents offer technologies are consist organically. Thesis of administration method of systematic and effective groove network is most urgent and important urea to offer safety and authoritativeness of home networking service in home network that strong certification and security function are required among these technologies. In this paper, we propose home gateway security management architecture and the way to use SNMPv3. Also, we propose structure and function of home network management system to support various home networking security scenarios.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.10a
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• pp.303-306
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• 2011

System solutions for access control to the user's personal when you want to authenticate to the system is used. The valid user is really just a part of authorized users, the suitability of a valid user has been authenticated are not sure whether the problem is the fact. For example, one developer in the Unix operating system can be valid, but do not have permission to access the system should be limited for. In this paper, a single account for multiple users to use the system operational issues to improve the fine-grained delegation of authority, the session audit, the administrator account's policy-based management, with full rights the administrator account of distribution management and auditing the system overall is the study of access control measures.

• 제어로봇시스템학회:학술대회논문집
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• 2003.10a
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• pp.2174-2177
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• 2003

Internet is exposed to network attacks as Internet has a security weakness. Network attacks which are virus, system intrusion, and deny of service, put Internet in the risk of hacking, so the damage of public organization and banking facilities are more increased. So, it is necessary that the security technologies about intrusion detection and controlling attacks minimize the damage of hacking. Router is the network device of managing traffic between Internets or Intranets. The damage of router attack causes the problem of the entire network. The security technology about router is necessary to defend Internet against network attacks. Router has the need of access control and security skills that prevent from illegal attacks. We developed integrated security management framework for secure networking and kernel-level security engine that filters the network packets, detects the network intrusion, and reports the network intrusion. The security engine on the router protects router or gateway from the network attacks and provides secure networking environments. It manages the network with security policy and handles the network attacks dynamically.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.59 no.3
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• pp.657-663
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• 2010

Today, rapid evolution of Internet makes various types of services in ubiquitous environment are intelligent and active. As a result, user's demand on high quality of life increases and health care service based on ubiquitous environment draws a lot of attention. However, user's private information used for health care service is illegally distributed and exposed, causing serious individual and social problems. Therefore, this thesis is intended to suggest a secure health care service to prevent unauthorized third party's access and to protect user's privacy in health care systems. The proposed scheme establishes a session key through communication channel between health care system and user based on explicit mutual authentication and provides secure communication and access control, improving security as one of the leading health care systems.

• The Journal of Information Technology
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• v.6 no.1
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• pp.107-115
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• 2003

With the development of Information Communication Technique, electronic commerce is widely used in internet using public key certificates. And the study for access control in database system is also progressed actively. In this paper, we analyze access control mechanism using attribute certificated and we propose new access mechanism in distributed system using attribute certificates.