• Journal of Digital Convergence
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• v.8 no.4
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• pp.59-71
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• 2010

The purpose of this paper is the improvement of NPKI management policy in Korea. In order to reach the issue of EC certification problems, we examined first the institutions and system accredited NPKI for checking on the status and problems. We studied the alternatives for the improvement of NPKI system through brainstorming with experts, they had drawn possible scenarios and chosen optimal policy measures of the public key infrastructure.

• TTA Journal
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• s.167
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• pp.74-75
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• 2016

"만약 누군가 지금 나의 컴퓨터를 지켜보고 있지는 않을까?" 최근 디지털 정보화 사회가 되면서 항상 신경 쓰이는 문제, 보안이다. 컴퓨터가 발전하면 할수록 악성코드와 바이러스가 더욱 진화하기 때문이다. 인터넷이 대중화되기 이전에는 해킹 방식의 바이러스보다는 컴퓨터를 다운시키거나 하드디스크를 날리는 악성코드가 유행했지만, 요즘은 사용자의 개인정보에서 공인인증서까지 빼내는 해킹수법이 다양해지고 있다. 아무리 백신 프로그램을 사용하고, 기술적으로 고도화된 암호를 만들어 첨단 방화벽을 사용한다 한들, 작정하고 취약점을 찾는 해커의 공격을 완전히 피하기는 어렵다. 해킹을 통해 철통 같은 보안 능력을 갖춘 대기업의 기밀문서를 빼내는 건 종종 있는 일이고, 포털 사이트의 회원 정보를 통째로 훔쳐가는 일도 간혹 벌어진다. 하물며 민간인이 사용하는 개인 킴퓨터의 보안쯤이야 전문 해커들에게는 종잇장 같은 수준이 아닐까.

• Electronics and Telecommunications Trends
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• v.28 no.3
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• pp.30-38
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• 2013

PC 및 스마트기기의 사용이 일반화됨에 따라, 최근 개인의 민감한 정보가 외부로 유출되는 사고가 빈번히 발생하고 있다. 그럼에도 불구하고, 일반적인 사용환경에서는 개인의 데이터가 평문 파일 형태로 관리되고 있는 실정이며, 이러한 상황에서는 공격자가 수월하게 공인인증서 및 개인정보 유출이 가능하다. 본고에서는 데이터를 보다 안전하게 저장 관리하기 위한 안전 저장장치에 대한 개념 및 기술 동향에 대하여 살펴본다. 특히, 현재까지 사용되고 있는 소프트웨어와 하드웨어 기반의 안전 저장장치 전반에 걸친 기술 동향 및 각 모듈의 특징을 분석하고 향후 연구 방향에 대하여 논한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.04a
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• pp.485-487
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• 2015

본 논문에서는 공인인증서 의무화 사용이 폐지되면서 전자서명 신기술이 도입되고 있으며 이에 국내 전자서명법과 국외 전자서명법에 대한 조사 및 분석을 통해 전자서명 신기술 도입 시 전자서명 기술을 운영하기 위한 법제도적인 지원방안을 제시하였다.

• The Journal of Society for e-Business Studies
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• v.9 no.2
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• pp.51-68
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• 2004

The purpose of this article is to review the current status of PKI, and to check the major results of Electronic signature business in Korea by conducting face-to-face interview. It is expected that the main implications from the PKI users would be considered by the government for improving the environment of PKI utilization in the favor of users.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.27 no.2
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• pp.373-381
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• 2017

Currently, various types of user authentication methods based on public certificates are used in domestic financial transactions. Such an authorized certificate method has a problem that a different security module must be installed every time a user connects an individual financial company to a web server. Also, the financial company relying on this authentication method has a problem that a new security module should be additionally installed for each financial institution whenever a next generation authentication method such as biometric authentication is newly introduced. In order to solve these problems, we propose an integrated authentication system that handles user authentication on behalf of each financial institution in financial transactions, and proposes an integrated authentication protocol that handles secure user authentication between user and financial company web server. The new authentication protocol is a modified version of OAuth2.0 that increases security and efficiency. It is characterized by performing a challenge-response protocol with a pre-shared secret key between the authentication server and the financial company web server. This gives users a convenient and secure Single Sign-On (SSO) effect.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.11
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• pp.5872-5878
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• 2013

This study provides two channel structure and two factor authentication. First, a purchasing request by Internet and then user certification and a settlement approval process by mobile communication. Second, it support that proposal protocol utilize a partial factor value of stored in users smartcard, smart phone and password of certificate. Third, storage stability is improved because certificate store in smartcard. Finally, proposal protocol satisfy confidentiality, integrity, authentication, and non- repudiation on required E-commerce guideline. In comparative analysis, Efficiency of the proposal protocol with the existing system was not significantly different. But, In terms of safety for a variety of threats to prove more secure than the existing system was confirmed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.2
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• pp.370-378
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• 2008

The CEDA(Certified E-Document Authority) is a reliable third party that deposit electronic document having legal effects securely, and verify contents of document or transmission. This paper focuses on a function of secure transmission among several important functions, and implements public key encryption system for secure transmission when server and user communicate for image transmission. This paper follows a standard fundamental rule of X.509 in ITU-T, and it uses symmetric encryption algorithm to raise speed of a large data operation. A key of symmetric encryption algorithm is encrypted by private key in public key system, it protects to be modified using digital signature for data integrity. Also it uses certificates for mutual authentication.

• The KIPS Transactions:PartC
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• v.18C no.6
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• pp.379-388
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• 2011

Ensuring the security of medical records is becoming an increasingly important problem as modern technology is integrated into existing medical services. As a consequence of the adoption of EMR(Electronic Medical Records) in the health care sector, it is becoming more and more common for a health professional to edit and view a patient's record. In order to protect the patient's privacy, a secure authentication model to access the electronic medical records system must be used. A traditional identity based digital certificate for the authenticity of EMR has private key management and key escrow of a user's private key. In order to protect the EMR, The traditional authentication system is based on the digital certificate. The identity based digital certificate has many disadvantages, for example, the private key can be forgotten or stolen, and can be easily escrow of the private key. Nowadays, authentication model using fingerprint recognition technology for EMR has become more prevalent because of the advantages over digital certificate -based authentication model. Because identity-based fingerprint recognition can eliminate disadvantages of identity-based digital certificate, the proposed authentication model provide high security for access control in EMR.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.6
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• pp.1-8
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• 2019

Medical information is an important personal information for patients, and it must be protected. In particular, when medical personnel approach electronic medical records, authentication for enhanced security is essential. However, the existing public certificate-based certification model did not reflect the security characteristics of the electronic medical record(EMR) due to problems such as personal key management and authority delegation. In this study, we propose a fingerprint recognition-based authentication model with enhanced security to solve problems in the approach of the existing electronic medical record system. The proposed authentication model is an EMR system based on fingerprint recognition using PEMS (Private-key Escrow Management Server), which is applied with the private key commission protocol and the private key withdrawal protocol, enabling the problem of personal key management and authority delegation to be resolved at source. The performance experiment of the proposed certification model confirmed that the performance time was improved compared to the existing public certificate-based authentication, and the user's convenience was increased by recognizing fingerprints by replacing the electronic signature password.