• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.897-899
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• 2011

2010년 Sood 등은 Wang 등의 인증 스킴이 여러 가지 보안 취약점을 가지고 있는 것을 지적하며 안전한 동적 ID 기반 인증 스킴을 제안하였다. 그러나 Sood 등이 제안한 동적 ID 기반 인증 스킴은 공격자가 통신하고 있는 두 당사자 사이에 끼어들어 당사자들이 교환하는 공개정보를 바꿈으로써 정당치 않은 세션 키가 생성되기 때문에 중간자 공격에 대한 취약성을 가지고 있다. 따라서 본 논문에서는 Sood 등이 제안한 동적 ID 기반 인증 스킴을 분석하고, Sood 등의 인증 스킴이 중간자 공격에 안전하지 못함을 증명한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.10 no.3
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• pp.1467-1480
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• 2016

This paper proposes "A Black Hole Detection Protocol Design based on a Mutual Authentication Scheme on VANET." It consists of the Mutual Authentication Scheme (MAS) that processes a Mutual Authentication by transferring messages among a Gateway Node, a Sensor Node, and a User Node and the Black Hole Detection Protocol (BHDP) which detects a Non-Authentication Node by using the Session Key computed in the MAS and a Black Hole by using the Broadcasting Table. Therefore, the MAS can reduce the operation count of hash functions more than the existing scheme and protect a privacy from an eavesdropping attack and an information exposure by hashing a nonce and user's ID and password. In addition, the MAS prevents a replay attack by using the randomly generated nonce and the time stamp. The BHDP improves Packet Delivery ratio and Throughput more than the AODV with Black hole by 4.79% and 38.28Kbps. Also, it improves Packet Delivery ratio and Throughput more than the IDSAODV by 1.53% and 10.45Kbps. Hence it makes VANET more safe and reliable.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.10a
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• pp.215-218
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• 2003

In this paper, we propose a protocol both allow a End-to-End security between user and service provider and independent in mobile Internet platform in AIP. In particular, our proposed protocol generates a session key using Weil pairing by ID-based public key system. We analysis a security and efficient of protocol when on-line certification authority participates in authentication process.

• KIPS Transactions on Computer and Communication Systems
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• v.2 no.12
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• pp.511-516
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• 2013

The cases of identification forgery and counterfeiting are increasing under the current identification system, which was established based on social conditions and administrative environments over 20 years ago. This leads to an increase of various criminal acts including illegal loan using fake ID and a number of damages caused out of good intentions that result in interference with the operations of public organizations. In addition, according to the advancement of information society, privacy protection has emerged as an important issue. However, ID card exposes individuals' personal information, such as names, resident registration numbers, photos, addresses and fingerprints, and thus the incidents associated with illegal use of personal information are increasing continuously. Accordingly, this study aimed at examining the issues of ID card forgery/counterfeiting and privacy protection and at proposing a next-generation identification system to supplement such weaknesses. The top priority has been set as prevention of forgery/counterfeiting and privacy protection in order to ensure the most important function of national identification system, which is user identification.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.7 no.8
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• pp.1732-1742
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• 2003

WPP protocol based a Credit card payment in mobile Internet uses WTLS which is security protocol of WAP. WTLS can't provide End­to­End security in network. In this paper, we propose a protocol both independent in mobile Internet platform and allow a security between user and VASP using Mobile Gateway in AIP. In particular, our proposed protocol is suitable in mobile Internet, since session key for authentication and initial payment process is generated using Weil Diffie­Hellman key exchange method that use additive group algorithm on elliptic curve.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.17 no.4
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• pp.103-113
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• 2007

In this paper, we present a security analysis of Lightweight RFID Mutual Authentication Protocols-LMAP[10], $M^2AP$[11], EMAP[12]. Based on simple logic operations, the protocols were designed to be suitable for lightweight environments such as RFID systems. In [8,9], it is shown that these protocols are vulnerable to do-synchronization attacks with a high probability. The authors also presented an active attack that partially reveals a tag's secret values including its ID. In this paper, we point out an error from [9] and show that their do-synchronization attack would always succeed. We also improve the active attack in [9] to show an adversary can compute a tag's ID as well as certain secret keys in a deterministic way. As for $M^2AP$ and EMAP, we show that eavesdropping $2{\sim}3$ consecutive sessions is sufficient to reveal a tag's essential secret values including its ID that allows for tracing, do-synchronization and/or subsequent impersonations.

• Journal of IKEEE
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• v.19 no.4
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• pp.617-624
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• 2015

In this paper, an adult authentication system based on authentication certificate was designed and implemented using smartphone and near-field communication. It has three advantages. First, it achieves easy, convenient, and fast authentication by using smartphone and near-field communication. Second, it achieves extremely high security and reliability by exploiting authentication certificate. Third, it achieves extremely low risk of personal information leakage by generating and sending only virtual identification code. Finally, it has a proper legal basis by Digital Signature Act. It consists of adult authentication module, near-field communication control module, policy server module, and database server module. A prototype of the proposed system was designed and implemented, and it was verified to have correct operation.

• The Journal of the Korea Contents Association
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• v.22 no.9
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• pp.64-75
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• 2022

The method of accessing multiple control systems in the OT control network centered on operation technology uses the operator authentication technology of each control system. An example is ID/PW operator authentication technology. In this case, since the OT control network is composed of multiple control systems, operator authentication technology must be applied to each control system. Therefore, the operator must bear the inconvenience of having to manage authentication information for each control system he manages. To solve these problems, SSO technology is used in business-oriented IT networks. However, if this is introduced into the OT control network as it is, the characteristics of the limited size of the OT control network and rapid operator authentication are not reflected, so it cannot be seen as a realistic alternative. In this paper, a public key-based authentication mechanism was newly proposed as an operator authentication technology to solve this problem. In other words, an integrated public key certificate that applies equally to all control systems in the OT control network was issued and used to access all control systems, thereby simplifying the authentication information management and making access to the control system more efficient and secure.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.1
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• pp.75-82
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• 2018

As user of mobile device increases, various user authentication methods are actively researched. The user authentication methods includes a method of using a user ID and a password, a method of using user biometric feature, a method of using location based, and a method of authenticating secondary authentication such as OTP(One Time Password) method is used. In this paper, we propose a user system which improves the problem of existing authentication method and encryption can proceed in a way that user desires. The proposed authentication system is composed of an authentication factor collection module that collects authentication factors using a mobile device, a security key generation module that generates a security key by combining the collected authentication factors, and a module that performs authentication using the generated security key module.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.14 no.5
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• pp.165-176
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• 2004

Al-Riyami and Paterson$^{[1]}$ suggested the new public key paradigm which is called the certificateless public key system. This system takes the advantages of both traditional PKC and ID-based PKC. It does not require the use of certificates of the public key and does not have the key escrow problem caused from the ID-based cryptosystem. In this paper, we propose an efficient certificateless public key encryption scheme which satisfies mutual authentication. The security of our protocol is based on the hardness of two problems; the computational Diffie-Hellman problem(CDHP) and the bilinear Diffie-Hellman problem(BDHP). We also give a formal security model for both confidentiality and unforgeability, and then show that our scheme is probably secure in the random oracle model.