• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.5
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• pp.2322-2326
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• 2011

General cryptosystem uses differently the data and key value for the increment of security level, processes the repetition of limited number and increases the periodic feature of LFSR similar infinite series. So, it cause the efficiency of the cryptosystem. In this thesis, proposed algorithm is composed of reformat, permutation, data cipher block and key scheduler which is applied the new function by mixed symmetric cryptography and asymmetric cryptography. We design the cryptosystem of smart card using the common Synopsys and simulate by ALTERA MAX+PLUS II at 40MHz. Consequently, we confirm the 52% increment of processing rate and the security level of 16 rounds.

• The Journal of the Korea institute of electronic communication sciences
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• v.2 no.3
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• pp.150-156
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• 2007

In this paper, we studied security systems for information security of several systems that use in network environment along with information society. Therefore, we designed symmetry style base mixing style cryptographic system that apply block and stream way to solve problems of complexity and lower processing speed etc. Symmetry style base mixing style cryptographic system including authentication operation holds performance that the processing speed and the calculation amount are more superior than asymmetry style. Result that design system by Synopsys 1999.10 and ALTERA MaxPlus 10.1 and do simulation, mixing style password system that we propose is that information security offers very efficient assistance and performance in necessary field in network environment.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.4
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• pp.888-894
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• 2015

This paper describes an efficient hardware design of Lightweight Encryption Algorithm (LEA) developed by National Security Research Institute(NSRI). The LEA crypto-processor supports for master key of 128-bit. To achieve small-area and low-power implementation, an efficient hardware sharing is employed, which shares hardware resources for encryption and decryption in round transformation block and key scheduler. The designed LEA crypto-processor was verified by FPGA implementation. The LEA core synthesized with Xilinx ISE has 1,498 slice elements, and the estimated throughput is 216.24 Mbps with 135.15 MHz.

• Journal of Korean Institute of Industrial Engineers
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• v.39 no.2
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• pp.129-134
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• 2013

The airport processes are restricted by some limits of performance objects as size of airport, ability of human resources, capacity of facilities and operational rules. These limitations make passenger handling difficult when passenger numbers increase. In order to solve this problem, we modeled the airport process and analyzed departure passenger arrival, scheduled security manpower under specific customer service level maintenance with mixed integer programming and validate the efficiency with simulation with adapting smart airport framework. We concluded that the airport management with information techniques can reduce waiting time within security and immigration process.

• ETRI Journal
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• v.29 no.6
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• pp.755-768
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• 2007

A very promising application of active RFID systems is the electronic seal, an electronic device to guarantee the authenticity and integrity of freight containers. To provide freight containers with a high level of tamper resistance, the security of electronic seals must be ensured. In this paper, we present the design and implementation of an electronic seal protection system. First, we propose the eSeal Protection Protocol (ePP). Next, we implement and evaluate various cryptographic primitives as building blocks for our protocol. Our experimental results show that AES-CBC-MAC achieves the best performance among various schemes for message authentication and session key derivation. Finally, we implement a new electronic seal system equipped with ePP, and evaluate its performance using a real-world platform. Our evaluation shows that ePP guarantees a sufficient performance over an ARM9-based interrogator.

• Journal of the Korea Society of Computer and Information
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• v.7 no.4
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• pp.66-74
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• 2002

Circulation of documents and data has two serious problems in this web-based system. The first of the problems is standardization problem which the flowing documents and data are not always standardized. the other is security problem which secret data can be hacked or cracked, and non-authenticated Person can access and change the contents with malicious intent. Therefore two issues come out on the web-based system, the first is how we can standardize the documents and data and the second is how we can assure safe flowing of them. One way of the standardizing methods is Mark-UP language which uses XML which is extended from SGML to redefine and use documents. And to ensure security of flowing documents we adopt digital signature system using public key and private key The focus of this study is to specify procedures for digital signature on the XML base. and to design XML components for the digital signature to assure information security in circulation of documents and data.

• Journal of the Korea Society of Computer and Information
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• v.9 no.2
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• pp.41-48
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• 2004

Access control protocol have verified security of external mobile terminal that access to inner information sever at Ubiquitous ages. In this paper, I would design for If Access Control Protocol of considering operation time when make cipher digital signature. Public key are used Individual identification number that issued from certify communication company, and cipher algorithm are used ECDSA definition factor for generation and verification of digital signature and it used Elliptic Curve with over 160 bit Key. Also, Access control operate on If level that designed IPv6 frame architecture. I would conclude that IP Access Control Protocol have verified security and improved performance in operation time more 4 times than before protocols when through the communication of use cipher digital signature for authentication and verification.

• Convergence Security Journal
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• v.2 no.2
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• pp.155-164
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• 2002

A design implemented the $\delta$SAcc234bit Mask Data Insertion algorithm that can let the Mask which commercialized Wave Steganography had improved the problem that a filter ring was able to easily become and raised Capacity and extend the width that Cover-data was alternative. Also, it applied 3-Tier file encryption algorithm with a proposal in order to improve a security level of Mask. 3-Tier file encryption algorithm is the algorithm that a specific pattern improved the problem that appeared in Ciphertext according to a file. A design implemented the StegoWaveK model carried out Wave Steganography, using $\delta$SAcc234bit Mask Data Insertion algorithm and the 3-Tier file encryption algorithm that proposed in this paper.

• Convergence Security Journal
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• v.12 no.6
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• pp.93-99
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• 2012

As the most common application development of software development time, error-free quality, adaptability to frequent maintenance, such as the need for large and complex software challenges have been raised. When developing web applications to respond to software reusability, reliability, scalability, simplicity, these quality issues do not take into account such aspects traditionally. In this situation, the traditional development methodology to solve the same quality because it has limited development of new methodologies is needed. Quality of applications the application logic, data, and architecture in the entire area as a separate methodology can achieve your goals if you do not respond. In this study secure coding, the big issue, web application factors to deal with security vulnerabilities, web application architecture, design procedure is proposed. This proposal is based on a series of ISO/IEC9000, a web application architecture design process.

• Convergence Security Journal
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• v.8 no.1
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• pp.49-56
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• 2008

Recently, Phising attack uses trick of URL and sites, and technical concealment method which infiltrates sophisticated malicious code. However, sometimes Phising security technology cannot cover all of Phising methods. Consequently, this research proposes inspection to solve this problem. First, we can install Proxy server for a strong open information exchange of web environment between web servers and clients. Therefore, it compares and analyzes harmful site and Phising URL with White domain list, and filters them. Finally, designs for stable web based information so that we can block Phising with least regulation and active control. So the purpose of this paper is introducing this design system and structure, and inspect them.