• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.10a
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• pp.349-350
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• 2022

As research on IT convergence continues, the scope of IoT (Internet of Things) services continues to expand. The IoT service uses a device suitable for the purpose. These IoT devices require an authentication function. In addition, in IoT services that handle important information such as personal information, security of transmission data is required. In this study, we implement a crypto key-based IoT network security system that can authenticate devices for IoT services and securely transmit data between devices. Through this study, IoT service can authenticate the device itself and maintain the confidentiality of transmitted data. However, since it is an IoT service, additional research on the application efficiency of the encryption algorithm is required.

• Journal of Digital Contents Society
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• v.18 no.5
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• pp.1001-1008
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• 2017

Because cyber attacks on industrial control systems can lead to massive financial loss or loss of lives, the standardization and the research on cyber security of industrial control systems are actively under way. As a related system, the industrial control system of social infrastructures must be equipped with the verified cryptographic module according to the e-government law and appropriate security control should be implemented in accordance with the security requirements of the industrial control system. However, the industrial control system consisting of the operation layer, the control layer, and the field device layer may cause a problem in performing the main function in each layer due to the security control implementation. In this paper, we propose things to check when performing security control in accordance with the security control requirements for each layer of the industrial control system and proper application.

• The Transactions of the Korea Information Processing Society
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• v.5 no.4
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• pp.984-994
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• 1998

In the information society, all the information is transferred through the network, so it becomes an issue to protect the data on network. One of the fundamental cryptographic tools to protect the data on network, is digital signatures, and in many countries, cryptographers have been trying to make their own digital signature standard. Also, at Crypto'89 meeting, D.Chaum suggested an undeniable signature scheme. Undeniable signatures are verified via a protocol between the signer and the verifier, so the cooperation of the signer is necessary, So far, there have been several variants of undeniable signatures to obtain a signature scheme, which can control the abuse of ordinary digital signatures.

• JSTS:Journal of Semiconductor Technology and Science
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• v.12 no.3
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• pp.286-292
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• 2012

Scan techniques are almost mandatorily adopted in designing current System-on-a-Chip (SoC) to enhance testability, but inadvertently secret keys can be stolen through the scan test channels of crypto SoCs. An efficient scan design technique is proposed in this paper to protect the secret key of an Advanced Encryption Standard (AES) core embedded in an SoC. A new instruction is added to IEEE 1149.1 boundary scan to use a fake key instead of user key, in which the fake key is chosen with meticulous care to improve the testability as well. Our approach can be implemented as user defined logic with conventional boundary scan design, hence no modification is necessary to any crypto IP core. Conformance to the IEEE 1149.1 standards is completely preserved while yielding better performance of area, power, and fault coverage with highly robust protection of the secret user key.

• Proceedings of the Acoustical Society of Korea Conference
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• 1998.06c
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• pp.347-350
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• 1998

최근 개인 휴대통신과 컴퓨터 기술의 발달로 유용한 데이터의 질적.양적 향상을 가져왔다. 이로 인해 저장중이거나 선로상에서의 전송중인 정보의 보호문제가 중요시되고 있다. 이러한 정보보호 문제가 중요시됨에 따라 정보보호를 위한 직접적인 암호화 방법중의 하나인 IDEA(International Data Encryption Algorithm)의 구현을 제안하고자 한다. IDEA는 블록 암호화 방식의 하나로서 64비트 데이터를 암호화하기 위해 128비트의 키를 사용한다. 본 논문에서 암호알고리즘 구현을 위하여 하드웨어 설계언어인 VHDL을 사용하였고, V-System을 이용하여 Simulation을 수행하였다. Coding된 알고리즘은 Synopsy를 사용하여 자동합성하였고, Xilinx사의 FPGA-4025를 Target으로 구현하였다.

• Proceedings of the IEEK Conference
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• 2002.06b
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• pp.349-352
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• 2002

In this Paper, we introduced 32 bit SOC implementation for multi-application Smart Card and described the methodology for reducing power consumption. It consists of ARMTTDMI micro-processor, 192 KBytes EEPROM, 16 KB SRAM, crypto processors and card reader interface based on AMBA bus system. We used Synopsys Power Compiler to estimate and optimize power consumption. Experimental results show that we can reduce Power consumption up to 62 % without increasing the chip area.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 2001.11a
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• pp.232-236
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• 2001

본 논문에서는 WAP 포럼에서 제시하고 있는 무선 인터넷 솔루션인 WAP에서의 보안 메커니즘인 WTLS(Wireless Transport Layer Security), WIM (WAP Identity Module), WMLScript Crypto Library, WPKI(WAP Public Key Infrastructure)에 대해 살펴보고, WAP 게이트웨이를 사용하는 네트워크의 구조적 형태에서 발생되는 종단간 보안 서비스의 문제점에 대해 논의한 후 WAP 환경에서 종단간 보안 서비스를 제공할 수 있는 보안 시스템을 설계 및 구현하고자 한다.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.07a
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• pp.227-227
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• 2004

• Journal of information and communication convergence engineering
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• v.6 no.2
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• pp.177-181
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• 2008

The more improved the Internet and the information technology, the stronger cryptographic system is required which can satisfy the information security on the platform of personal hand-held devices or smart card system. This paper introduces a case study of designing an elliptic curve cryptographic processor of a high performance that can be suitably used in a wireless communicating device or in an embedded system. To design an efficient cryptographic system, we first analyzed the operation hierarchy of the elliptic curve cryptographic system and then implemented the system by adopting a serial cell multiplier and modified Euclid divider. Simulation result shows that the system was correctly designed and it can compute thousands of operations per a second. The operating frequency used in simulation is about 66MHz and gate counts are approximately 229,284.

• Journal of Broadcast Engineering
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• v.23 no.5
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• pp.701-713
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• 2018

The purpose of this paper is to analyze the changes of the digital music platforms and digital profit distribution issues which are considered to be the most important part of the application to the Global music industry based on the block chain system. This attempt is not to reveal the success of the block chain and the value judgment in the societies that will come in the future. How to apply the original function of the block chain in the field of the music industry, which has changed a lot in the digital era, this paper focused on what we need to work on. First, I will briefly review the structure and major functions of the block chain system and the crypto-currency, and examine the link between the blockchain and the music industry. In addition, I will focus on some overseas' cases that are actually applied, and examine the possibility of applying them in the domestic music industry. Through this, I expect that this article will become a cornerstone for discussing the development direction of the music industry, especially the Korean music industry, which is constantly changing due to the technological advancement process.