• The Journal of the Korea Contents Association
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• v.9 no.1
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• pp.115-122
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• 2009

In this paper, we proposed scheme that we use a difference of timestamp in time in Ubiquitous environments as we use the Diffie-Hellman method that OTP was applied to when it deliver a key between nodes, and can detect a malicious node at these papers. Existing methods attempted the malicious node detection in the ways that used correct synchronization or directed antenna in time. We propose an intermediate malicious node detection way at these papers without an directed antenna addition or the Trusted Third Party (TTP) as we apply the OTP which used timestamp to a Diffie-Hellman method, and we verify safety regarding this. A way to propose at these papers is easily the way how application is possible in Ubiquitous environment.

• Journal of the Korea Convergence Society
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• v.10 no.12
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• pp.63-69
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• 2019

Using a smartphone allows quick and easy authentication and payment. However, smartphone security threats are evolving into a variety of new hacking technologies, and are changing to attacks specific to the mobile environment. Therefore, there is a demand for an authentication method suitable for a mobile environment. In order to solve security weaknesses in knowledge-based authentication, many companies provide two-step authentication services such as OTP(One Time Password) to provide authentication services such as finance, games, and login. Although OTP service is easy to use, it is easy to duplicate random number table and has a disadvantage that can be reused because it is used as valid value within time limit. In this paper, we propose a mechanism that enables users to quickly and easily authenticate with high security using the authentication method that recognizes special characters through smartphone's dedicated application.

• International Journal of Advanced Culture Technology
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• v.9 no.1
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• pp.224-241
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• 2021

According to data from the National Police Agency, 75.5 percent of dead traffic accidents in Korea are truck accidents. About 1,000 people die in cargo truck accidents in Korea every year, and two to three people die in cargo truck accidents every day. In the survey, Korean cargo workers answer poor working conditions as an important cause of constant truck accidents. COVID 19 is increasing demand for non-face-to-face logistics. The inefficiency of the Korean transportation system is leading to excessive work burden for small logistics The inefficiency of the Korean transportation system is causing excessive work burden for small individual carriers. The inefficiency of the Korean transportation system is also evidenced by the number of deaths from logistics industry disasters that have risen sharply since 2020. Small and medium-sized Korean Enterprises located in CIPs (Connected Industrial Parks) often do not have smart access certification systems. And as a result, a lot of transportation time is wasted at the final destination stage. In the logistics industry, time is the cost and time is the revenue. The logistics industry is the representative industry in which time becomes money. The smart access authentication system architecture proposed in this paper allows small logistics private carriers to improve legal stability, and SMEs (Small and Medium-sized Enterprises) in CIPs to reduce logistics transit time. The CIPs smart access system proposed in this paper utilizes the currently active Mobile OTP (One Time Password), which can significantly reduce system design costs, significantly reduce the data capacity burden on individual cell phone terminals, and improve the response speed of individual cell phone terminals. It is also compatible with the OTP system, which was previously used in various ways, and the system reliability through the long period of use of the OTP system is also high. User customers can understand OTP access systems more easily than other smart access systems.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.4
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• pp.936-944
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• 2008

DRM system is a technology that protects and manages copyright holder's privilege by using a copyright protection technology. This paper contributes to improvement of the secret key transmission and encryption/decryption processing time base on DRM system. In this paper, we will suggest that as follow: First, we will propose the algorithm to transmit the encryption key which use Multidimensional Method more safe than the existing One-path XOR method. Second, we will provide the high quality algorithm of security than the existing system because the Multidimensional which generated from the algorithm does not saved to the server side. Third, we will support the client decryption system which can decrypt the Multidimensional with OPT in decryption with client side. Fourth, we will adopt the more safr method of transmission with the compound of Multidimensional Method and OPT.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.865-868
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• 2006

최근 물류, 교통, 환경 등 우리가 살아가는 생활 중 다양하게 많이 사용되어지는 RFID 시스템은 우리에게 많은 편의를 제공하고 있다. 이러한 시스템은 무선네트워크를 이용하기 때문에 이것이 가지고 있는 보안적 취약점이 크게 문제가 되고 있다. 개인정보를 도용하여 악의적인 목적으로 사용하고 사생활까지 침해하여 사회에서 큰 불신을 갖게 되는 이러한 취약점을 안전하게 이용할 수 있도록 여러 가지 보안방식들을 사용한다. 본 연구에서는 이러한 보안방식 중 OTP(One Time Password)라는 보안방식을 RFID 시스템에 응용하여 이러한 시스템에서 지금까지 사용되고 있는 여러 보안방식들 보다도 더욱 안전하게 개인 프라이버시를 보호하고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.1213-1216
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• 2005

인터넷을 통한 자동화된 업무가 증가함에 따라서, 공공 컴퓨터들에 대한 의존도가 높아지고 있다. 그러나 오늘날 웹메일, 옥션, 인터넷 뱅킹, 휴대폰 결제등과 같은 위한 원격 서비스들은 사용자의 신원을 증명하기 위해 사용자의 아이디와 패스워드 또는 주민등록번호를 요구한다. 하지만 안전하지 못한 채널로 전송되는 사용자의 정보는 공격자에 의해서 도청및 재사용될 가능성이 매우 높다. 본 논문에서는 위와 같이 보안이 취약한 환경에서 안전한 사용자 인증이 성공적으로 이루어 질 수 있는 새로운 인증 시스템을 제안하고자 한다. 제안 시스템은 현대의 일반 사용자들이 항상 소지하는 휴대폰의 SMS(Simple Message Service)와 일회용 패스워드(OTP : One Time Password)를 기반으로 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.1020-1023
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• 2011

최근 스마트 모바일이 성장하면서 다양한 서비스들이 이루어지고 있다. 그 중에 모바일 오피스를 사용할 때 내부 망을 방문해야 한다. 그에 대한 보안 문제는 매우 중요하다. 본 논문은 모바일 기기가 내부 망에 방문할 때 사용자를 인증하기 위하여 통신의 보안 터널과 VPN(Virtual Private Network)기술을 사용하고, 모바일 기기가 내부 망에 방문할 때 OTP(One-Time Password)와 같은 동적인 패스워드 인증을 통해서 안전한 터널과 인증 서비스를 제공한다.

• Journal of Korean Society of Disaster and Security
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• v.5 no.1
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• pp.21-28
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• 2012

This study can be solved a means of authentication of electronic financial transactions. We suggest that smart devices can be useful to authenticate in electronic financial transactions regardless of time and place. Our new authentication method named Lock-Unlock authentication method with smart devices. This method will be expected to reduce many kind of accidents (theft, phishing, hacking, certificates and simple certified OTP, ATM withdrawals, ARS, etc.) by account locking in electronic financial transactions. And helpful to users can effectively protect electronic financial transactions and minimize the accident during get a electronic trading.

• Journal of Digital Contents Society
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• v.12 no.4
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• pp.567-574
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• 2011

In this paper, we have designed and implemented a commercial web system for the future which resolves the necessary security and compatibility to the existing issues in various fields such as theater or the ball park that tickets are issued. The system presents the OTP (One Time Password) system using the mobile in order for defense in the bypass hacking technique such as screen hacking and for greater security. Also, we presents a smart ticketing system that improve the existing responsive hybrid web. It uses Non-ActiveX System which solve compatible problems with present systems that don't use ActiveX. Also, it is available in a variety of environments and equipment. In addition, the system provides an intelligent screen switching systems using the characteristics of mobile devices, an automatic discount system, and a venue information system which shows the shortest distance to the venue considering the commercial portion.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.7
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• pp.1634-1642
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• 2014

Mobile RFID system, that consists of the existing RFID reader mounted on the mobile devices such as smartphones, is able to provide the users a variety of services and convenience. But security of mobile RFID system is too weak like the existing RFID system. In this paper, the mobile RFID mutual authentication protocol with high level of security is proposed to overcome the troubles such as cryptographic protocols in the existing RFID system responding with the same value in every authentication procedure and the exposure in the exchange of messages. The proposed protocol exchanges messages unexposed by using the random numbers generated in the mutual authentication between the tag and the reader and making numbers coded with the symmetric key. Besides, the protocol uses the mutual authentication utilizing OTP by considering the characteristics of the reader embedded in mobile devices in the mutual authentication process between the reader and the server. Because changed message in every authentication, which produces safe from spoofing attacks and replay attacks, etc.