• IEIE Transactions on Smart Processing and Computing
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• v.6 no.2
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• pp.133-139
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• 2017

Vehicles have increasingly evolved and become intelligent with convergence of information and communications technologies (ICT). Vehicle communications (VC) has become one of the major necessities for intelligent vehicles. However, VC suffers from serious security problems that hinder its commercialization. Hence, the IEEE 1609 Wireless Access Vehicular Environment (WAVE) protocol defines a security service for VC. This service includes Advanced Encryption Standard-Counter with CBC-MAC (AES-CCM) for data encryption in VC. A high-speed AES-CCM crypto module is necessary, because VC requires a fast communication rate between vehicles. In this study, we propose and implement an efficient AES-CCM hardware architecture for high-speed VC. First, we propose a 32-bit substitution table (S_Box) to reduce the AES module latency. Second, we employ key box register files to save key expansion results. Third, we save the input and processed data to internal register files for secure encryption and to secure data from external attacks. Finally, we design a parallel architecture for both cipher block chaining message authentication code (CBC-MAC) and the counter module in AES-CCM to improve performance. For implementation of the field programmable gate array (FPGA) hardware, we use a Xilinx Virtex-5 FPGA chip. The entire operation of the AES-CCM module is validated by timing simulations in Xilinx ISE at a speed of 166.2 MHz.

• Proceedings of the Korean Society of Computer Information Conference
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• 2015.01a
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• pp.223-224
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• 2015

본 논문은 보행자가 안전하게 도로 횡단을 도울 수 있도록 교통 제어 신호기를 임시제어 할 수 있는 시스템을 제안하였다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.1
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• pp.94-102
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• 2016

In this work we propose a new method to countermeasure against the abatement attack to the security server that is induced by man-in-the-middle attack. To that purpose, we first investigate the state of the art in the current research about the abatement attack. After that, we propose a new countermeasure method that can cope with the unresolved problems in the current method, which can cover diverse types of network.

• Proceedings of the KIEE Conference
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• 1997.07b
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• pp.530-532
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• 1997

In this paper, a transmitter and a receiver using two identical Chua's circuits are proposed and a wire secure communications are investigated. A secure communication method in which the desired information signal is synthesized with the chaos signal created by the Chua's circuit is proposed and information signal is demodulated also using the Chua's circuit. The proposed method is synthesizing the desired information with the chaos circuit by adding the information signal to the chaos signal in the wire transmission system. After transmitting the synthesized signal through the wire transmission system, it is confirmed the feasibility of the secure communication from result of demodulated signals and recovered wire tapped signals.

• Proceedings of the Korean Information Science Society Conference
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• 2010.06b
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• pp.73-76
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• 2010

소프트웨어에 잠재하고 있는 프로그래밍 오류는 소프트웨어 취약점을 야기한다. 개발자는 이런 오류를 간과하기 쉬워 공격자에 의해 위협을 받는 시스템을 개발할 가능성이 높다. 또한 이런 오류는 공격자들에 의해 발견되기 쉽고, 악용되기 쉽다는 특징 때문에 위험하다. 개발 후, 테스팅을 통해 모든 오류를 발견하는 것은 불가능하기 때문에 개발단계에서 이런 오류를 사전에 예방해야 한다. 본 논문에서는 이와 같은 프로그래밍 오류로 인해 나타나는 취약성을 사전에 줄이고자하는 시큐어 코딩(secure coding)과 입력유효성 검사를 간략하게 소개하고, 사례연구를 통해 악의적인 입력으로 인해 취약성을 유발할 수 있는 프로그래밍 오류를 확인하고, 이를 사전에 예방할 수 있는 입력유효성 기법을 제시한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.9 no.10
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• pp.4177-4190
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• 2015

Current research on Internet of Things (IoT) has primarily addressed the means to enhancing smart resource allocation, automatic network operation, and secure service provisioning. In particular, providing satisfactory security service in IoT systems is indispensable to its mission critical applications. However, limited resources prevent full security coverage at all times. Therefore, these limited resources must be deployed intelligently by considering differences in priorities of targets that require security coverage. In this study, we have developed a new application of Cognitive Radio (CR) technology for IoT systems and provide an appropriate security solution that will enable IoT to be more affordable and applicable than it is currently. To resolve the security-related resource allocation problem, game theory is a suitable and effective tool. Based on the Blotto game model, we propose a new strategic power allocation scheme to ensure secure CR communications. A simulation shows that our proposed scheme can effectively respond to current system conditions and perform more effectively than other existing schemes in dynamically changeable IoT environments.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.18 no.8
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• pp.1117-1127
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• 1993

전자우편서비스가 확대됨에 따라 정보 보호 문제가 중요한 현안으로 대두될 것이다. 이러한 필요성에 따라, MHS(Message Handling System) 시스템의 정보보호(Information Security) 서비스에 관련된 표준화(X.400 series)와 보안 서비스에 관련된 키 관리 메카니즘 표준화(X.509)출 분석하려다. 본 연구에서는 여러가지 보안서비스 중, 안전한 메시지 전송을 위해 1차적으로 메시지 비밀보장, 메시지 무결성, 발신처 인증 서비스를 위 한 SMP(Secure Message Protocol ) 프로토콜을 설계하여 UNIX BSD 4.3 시스템환경에서 구현하였다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.9B
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• pp.931-938
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• 2009

Recently, Holbl et al. proposed an improvement to Peyravian-Jeffries's password-based authentication protocol to overcome some security flaws. However, Munilla et al. showed that Holbl et al.'s improvement is still vulnerable to off-line password guessing attack. In this paper, we provide a secure password-based authentication protocol which gets rid of the security flaws of Holbl et al.'s protocol.

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.30 no.3
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• pp.47-54
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• 2012

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.28 no.12
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• pp.67-74
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• 2010