• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.7
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• pp.1367-1372
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• 2007

This paper suggests One-time Password key exchange authentication technique for a strong authentication based on MANET and through identify wireless environment security vulnerabilities, analyzes current authentication techniques. The suggested authentication technique consists of 3 steps: Routing, Registration, and Running. The Routing step sets a safe route using AODV protocol. The Registration and Running step apply the One-time password S/key and the DH-EKE based on the password, for source node authentication. In setting the Session key for safe packet transmission and data encryption, the suggested authentication technique encrypts message as H(pwd) verifiers, performs key exchange and utilizes One time password for the password possession verification and the efficiency enhancement. EKE sets end to end session key using the DH-EKE in which it expounds the identifier to hash function with the modula exponent. A safe session key exchange is possible through encryption of the H(pwd) verifier. The suggested authentication technique requires exponentiation and is applicable in the wireless network environment because it transmits data at a time for key sharing, which proves it is a strong and reliable authentication technique based on the complete MANET.

• 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.

• International journal of advanced smart convergence
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• v.13 no.2
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• pp.35-43
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• 2024

In this paper, we propose two 127-bit LFSR (Linear Feedback Shift Register)-based OTP (One-Time Password) generators. One is a 9-digit decimal OTP generator with thirty taps, while the other is a 12-digit OTP generator with forty taps. The 9-digit OTP generator includes only the positions of Fibonacci numbers to enhance randomness, whereas the 12-digit OTP generator includes the positions of prime numbers and odd numbers. Both proposed OTP generators are implemented on an Arduino module, and randomness evaluations indicate that the generators perform well across six criteria and are straightforward to implement with Arduino.

• Journal of Information Processing Systems
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• v.10 no.3
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• pp.483-490
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• 2014

In today's world, communication, the sharing of information, and money transactions are all possible to conduct via the Internet, but it is important that it these things are done by the actual person. It is possible via several means that an intruder can access user information. As such, several precautionary measures have to be taken to avoid such instances. The purpose of this paper is to introduce the idea of a one-time password (OTP), which makes unauthorized access difficult for unauthorized users. A OTP can be implemented using smart cards, time-based tokens, and short message service, but hardware based methodologies require maintenance costs and can be misplaced Therefore, the quick response code technique and personal assurance message has been added along with the OTP authentication.

• The Journal of the Korea Contents Association
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• v.9 no.3
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• pp.28-38
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• 2009

Login process uses both ID and password information to authenticate someone and to permit its access privilege on system. However, an attacker can get those ID and password information by using existing packet sniffing or key logger programs. It cause privacy problem as those information can be used as a hacking and network attack on web server and web e-mail system. Therefore, a more secure and advanced authentication mechanism should be required to enhance the authentication process on existing system. In this paper, we propose a multi-factor authentication process by using software form of secure card system combined with existing ID/Password based login system. Proposed mechanism uses a random number generated from the his/her own handset with biometric information. Therefore, we can provide a one-time password function on web login system to authenticate the user using multi-factor form. Proposed scheme provide enhanced authentication function and security because it is a 'multi-factor authentication mechanism' combined with handset and biometric information on web login system.

• Journal of the Optical Society of Korea
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• v.20 no.6
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• pp.722-732
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• 2016

A new optical one-time password (OTP) authentication method using digital holography is proposed, which enhances security strength in the authentication system. A challenge-response optical OTP algorithm based on two-factor authentication is presented using two-step phase-shifting digital holography, and two-way authentication is also performed using challenge-response handshake in both directions. Identification (ID), password (PW), and OTP are encrypted with a shared key by applying phase-shifting digital holography, and these encrypted pieces of information are verified by each party by means of the shared key. The encrypted digital holograms are obtained by Fourier-transform holography and are recorded on a CCD with 256 quantized gray-level intensities. Because the intensity pattern of such an encrypted digital hologram is distributed randomly, it guards against a replay attack and results in higher security level. The proposed method has advantages, in that it does not require a time-synchronized OTP, and can be applied to various authentication applications. Computer experiments show that the proposed method is feasible for high-security OTP authentication.

• Review of KIISC
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• v.17 no.3
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• pp.12-17
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• 2007

최근 인터넷과 같은 통신 기술이 급속도로 발전함에 따라, 많은 서비스들이 온라인을 통해서 이루어지고 있다. 그러나 인터넷은 개방형 네트워크이기 때문에 공격자에 의한 시스템 침입, 도청 돈과 같은 여러 공격이 쉽게 발생된다. 특히 기존에 오프라인 상에서 이루어지던 은행 거래와 상거래가 인터넷 뱅킹과 전자상거래와 같이 온라인상에서 이루어짐에 따라 그 위험 수준은 더욱 높아지고 있다. 이러한 환경에서 사용자 인증은 안전한 통신을 위한 필수적인 요소라 할 수 있다. 대표적인 인증 방법으로 ID/Password 방식이 사용된다 하지만 ID/Password의 경우 추측이나 도청에 의해 쉽게 공격될 수 있는 단점을 가지고 있다. 이러한 단점을 극복할 수 있는 인증 기법이 매번 새로운 패스워드를 생성하는 일회용 패스워드(OTP: One-Time Password) 기술을 활용한 인증 방법이다. 본 논문에서는 이러한 OTP 기술 분석 및 표준화 동향에 대해 소개하고자 한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2019.05a
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• pp.197-200
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• 2019

File Transfer Protocol (FTP) is a protocol for transferring files between computers, FTPS with TLS, and SFTP based on similar SSH. The keynote to apply one-time password (OTP) has been diffused to resolve identity and password theft cases. In this paper, it has been confirmed that both data transmission and identity authentication using OTP at TLS level are possible without significant change in user client.

• Journal of Industrial Technology
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• v.24 no.B
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• pp.193-198
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• 2004

We propose and analyse a flexible secure file sharing scheme which can be used for data sharing among members in P2P environment. When a member wants to share data, notification messages are sent to the members with whom the member wants to share data. Each notification message includes one-time password encrypted with the receiver's public key. A member who received the notification message can download the data by using the one-time password. The proposed scheme provides selective sharing, download confirmation and efficient memory management. In terms of security, the proposed scheme supports authentication, entity privacy, replay attack protection and disguise prevention.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.04a
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• pp.803-808
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• 2000

OMG 에 의해 표준화되어 객체지향 방법론으로 널리 쓰이고 있는 UML 을 이용하여 보안 기술중의 하나인 일회용 패스워드(One-Time Password) 기술을 모델링한다. UML 은 전체적인 시스템을 이해하는데 도움을 준다. 그러나 그래픽컬한 UML 모델링 기술만으로는 불가능한 일관성 및 refinement 체크를 위해 각 다이어그램 특성에 맞게 정형명세나 정형검증을 도구를 적용하는 것이 필요하다. 클래스 다이어그램의 클래스와 정형명세 언어인 Z 스키마(schema)의 유사성을 이용하여 모델링의 정확성을 확인하는데 Z를 이용할 수 있다.