• The Journal of Korean Institute of Communications and Information Sciences
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• v.25 no.4B
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• pp.700-707
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• 2000

In this paper, we address vulnerabilities of legacy VOD system and implement secure-VOD system to protect security holes of it. Our secure-VOD system provide user authentication using one-time password, message authentication and encryption/decryption for video server information. To improve security of existing fixed password system, our secure-VOD system use one-time password. Also, our secure-VOD system provides integrity for video server information by generating and verifying message authentication code using HMAC-HAS 160 algorithm. Finally, our secure-VOD system uses RC5 encryption algorithm to guarantee confidentiality for video server information.

• 제어로봇시스템학회:학술대회논문집
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• 2003.10a
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• pp.2097-2100
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• 2003

Many studies have been done on secure operating system using secure kernel that has various access control policies for system security. Secure kernel can protect user or system data from unauthorized and/or illegal accesses by applying various access control policies like DAC(Discretionary Access Control), MAC(Mandatory Access Control), RBAC(Role Based Access Control), and so on. But, even if secure operating system is running under various access control policies, network traffic among these secure operating systems can be captured and exposed easily by network monitoring tools like packet sniffer if there is no protection policy for network traffic among secure operating systems. For this reason, protection for data within network traffic is as important as protection for data within local system. In this paper, we propose a secure operating system trusted channel, SOSTC, as a prototype of a simple secure network protocol that can protect network traffic among secure operating systems and can transfer security information of the subject. It is significant that SOSTC can be used to extend a security range of secure operating system to the network environment.

• The KIPS Transactions:PartA
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• v.11A no.6
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• pp.439-450
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• 2004

Mobile agents are autonomous and dynamic entities that can migrate among various nodes in the network. Java's Jini framework facilitates mobile agent system development, providing hey features for distributed network programming. However, due to the security weakness, Jinil.0 service has a fundamental limitation on developing mobile agent systems which support secure remote communications. In this paper, we describe a Jini2.0-based secure mobile agent system named SecureJMoblet. On the top of Jini2.0, the system provides basic functionalities of a mobile agent system such as creation, transfer and control. In addition, with the SeureJS developed for secure JavaSpace service, SecureJMoblet supports a secure object repository and a reliable communication among mobile agents.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2002.05a
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• pp.724-728
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• 2002

This paper considers a security framework for geographic information System(GIS). The GIS is an information system for supporting fast decision associated spacial problems and the system has a role of infra structure of the information system. The security is also one of the major technology for information system. However, researches on secure GIS are presented little and this paper considers the secure GIS. This paper suggest a framework for the secure GIS based on derived requirements on the secure system. Analysis on security for a serial, parallel and hierarchical secure system is also added.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.11
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• pp.2381-2390
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• 2011

This paper presents the effective and detailed secure monitoring method being used based on Secure OS. For this, the detailed secure log of process, object, user's command and database query in task server are collected by 3 kinds of log collecting module. The log collecting modules are developed by ourselves and contained as constituents of security system. Secure OS module collects process and system secure log of objective unit, Backtracker module collects user's command session log, SQLtracker module collects database query in details. When a system auditor monitors and traces the behaviour of specified user or individual user, the mutual connection method between the secure logs can support detailed auditing and monitering effectively.

• Journal of Information Processing Systems
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• v.20 no.1
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• pp.116-130
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• 2024

In the Internet-of-Things (IoT) or blockchain-based network systems, secure keys may be stored in individual devices; thus, individual devices should protect data by performing secure operations on the data transmitted and received over networks. Typically, secure functions, such as a physical unclonable function (PUF) and fully homomorphic encryption (FHE), are useful for generating safe keys and distributing data in a network. However, to provide these functions in embedded devices for IoT or blockchain systems, proper inspection is required for designing and implementing embedded system-on-chip (SoC) modules through overhead and performance analysis. In this paper, a virtual platform (SoC VP) was developed that includes a secure key generation module with a PUF and FHE. The SoC VP platform was implemented using SystemC, which enables the execution and verification of various aspects of the secure key generation module at the electronic system level and analyzes the system-level execution time, memory footprint, and performance, such as randomness and uniqueness. We experimentally verified the secure key generation module, and estimated the execution of the PUF key and FHE encryption based on the unit time of each module.

• 제어로봇시스템학회:학술대회논문집
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• 2002.10a
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• pp.54.1-54
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• 2002

1. Introduction 2. Related Work 3. Secure Data Transmission on web-based monitoring and control System 3.1 Requirement facts with the Security for the Secure Data Transmission 3.2 Architecture for the Secure Data Transmission 4. Conclusions and Further Research

• The KIPS Transactions:PartC
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• v.8C no.5
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• pp.557-564
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• 2001

Many people use Linux and FreeBSD because it is freeware and excellent performance. The open source code is very important feature but it also has some problem which may be attacked by hackers frequently. This paper describes the SecuROS of secure operating system that is best solution to this problem and introduces user and programmer interface for active use of secure operating system. Developed secure operating system is composed of the access control method MAC and ACL and conforms to the POSIX which is universally used.

• International Journal of Internet, Broadcasting and Communication
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• v.13 no.3
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• pp.1-11
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• 2021

Development of ICT technologies leads exponential growth of various sharing economy over the last couple of years. The intuitive advantage of the sharing economy is efficient utilization of idle goods and services, but there are safety and security concerns. In this paper, we propose a onetime password based access control system to support secure accommodation sharing service and show the implementation results. To provide a secure service to both the provider and the user, the proposed system issues a onetime access password that is valid only during the sharing period reserved by the user, thereafter access returns to the accommodation owner. Especially, our system provides secure user access by merging the two elements of speaker recognition using voice and a one-time password to open and close the door lock. In this paper, we propose a secure system for accommodation sharing services as a use-case, but the proposed system can be applicable to various sharing services utilizing security-sensitive facilities.

• The Journal of Information Technology
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• v.2 no.2
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• pp.89-105
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• 1999

In this paper, we present a countermeasure for a various trouble occurred in secure communication of document image. We Propose a security system for transmission of document image using mixing algorithm that the third party cannot conceive secure transmission of information instead of existing scheme which depend on crypto-degree of security algorithm, itself. For this, RM, DM and RDM algorithm for mixing of secure bits are proposed and applied to digital signature for mixing for secure document and mixing for non-secure document by secure document. Security system for document image involves not only security scheme for document image transmission itself, but also digital signature scheme. The transmitter embeds secretly the signatures onto secure document, embeds it to non-secure document and transfers it to the receiver. The receiver makes a check of any forgery on the signature and the document. Because the total amount of transmitted data and the image quality are about the same to those of the original document image, respectively, the third party cannot notice the fact that signatures and secure document are embedded on the document image. Thus, the probability of attack will be reduced.