• 동의신경정신과학회지
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• 제30권3호
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• pp.129-140
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• 2019

Objectives: The purpose of this paper is to report the results of applying philosophical counseling to Hwabyung. Methods: At the time of the medical examination, 15 minutes or more of philosophical counselling method based on self-identity was conducted if possible. Additionally, We applied Hwabyung treatment guidelines (acupuncture, herbal medicine, etc.) to the patient If diagnosed as necessary. We evaluated visual Analogue Scale (VAS), Hwabyung scale, and Symptom Checklist 90-Revision (SCL 90-R) at baseline, and reassessed VAS and Hwabyung scale after about two weeks of treatments. Results: After about two weeks of treatment and philosophical counselling, VAS was between 10 to 1-2 and Hwabyung scale from 59 to 48. Also, the problem of fragmentation in the patient's life process was insighted, and the viewpoint was changed. Conclusions: It is useful to combine Korean traditional medical treatment with philosophical counselling method based on self identity for patients suffering from the Hwabyung. To Hwabyung patient, the view of philosophical counselling of feminism which understands women in political and cultural contexts is helpful.

• 한국정보전자통신기술학회논문지
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• 제17권1호
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• pp.47-52
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• 2024

코로나 펜데믹을 거치면서 중앙정부, 지방정부, 민간사업자를 중심으로 블록체인 기반 탈중앙화 신원인증(Decentralized ID) 기술 활용 및 고도화 연구가 다양한 분야에서 활발하게 진행되고 있다. 본 논문에서는 기존 중앙 서버 기반 신원인증을 탈중앙화 기반으로 변경하기 위해 하이퍼레저 패브릭 기반으로 개발한 결과를 소개한다. 이러한 개발 결과는 상용화 목적의 신원인증 시스템에 보안성, 투명성을 강화하여 사용자 ID 발급, 조회, 폐기에 대해 안정적인 서비스를 제공할 수 있다. 또한, 탈중앙화된 신원인증 시스템은 DID 생성 262,000 rps, DID 조회 1,850 rps 성능과 DID VP 생성 200 rps, DID VP 조회 220 rps 이하의 성능 결과를 공인 인증을 통해 검증하였다.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2003년도 봄 학술발표대회논문집
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• pp.40-41
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• 2003

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제7권11호
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• pp.2928-2940
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• 2013

Key exposure is a major threat to secure cryptosystems. To mitigate the impact caused by key-compromise attacks, a key-insulated cryptographic mechanism is a better alternative. For securing the large message communication in peer-to-peer networks, in this paper, we propose the first novel identity-based key-insulated encryption (IB-KIE) scheme with message linkages. Our scheme has the properties of unbounded time periods and random-access key-updates. In the proposed scheme, each client can periodically update his private key while the corresponding public one remains unchanged. The essential security assumption of our proposed scheme is based on the well-known bilinear Diffie-Hellman problem (BDHP). To ensure the practical feasibility, we also formally prove that the proposed scheme achieves the security requirement of confidentiality against indistinguishability under adaptive chosen-ciphertext attacks (IND-CCA2) in the random oracle model.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권12호
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• pp.5553-5571
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• 2016

In this paper, we introduce a new concept called generalized ring signcryption (GRSC), which can achieve ring signature and ring signcryption functions with only one key pair and one algorithm. It is very useful for a system which has a large number of users, or has limited storage space, or whose function requirements may be changed later. We give a formal definition and a security model of GRSC and propose a concrete scheme based on bilinear pairings. In the random oracle model, the scheme's confidentiality can be proved under the GBDH assumption, and its unforgeability can be proved under GDH' assumption, and what is more, this scheme also allows unconditional anonymity. Compared with other identity-based ring signcryption schemes that use bilinear pairings as well, our scheme is a highly efficient one.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권6호
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• pp.3299-3315
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• 2019

Deniable authentication (DA) is a protocol in which a receiver can generate an authenticator that is probabilistically indistinguishable from a sender. DA can be applied in many scenarios that require user privacy protection. To enhance the security of DA, in this paper, we construct a new deniable authenticated encryption (DAE) scheme that realizes deniable authentication and confidentiality in a logical single step. Compared with existing approaches, our approach provides proof of security and is efficient in terms of performance analysis. Our scheme is in an identity-based environment; thus, it avoids the public key certificate-based public key infrastructure (PKI). Moreover, we provide an example that shows that our protocol is applicable for e-voting systems.

• 정보보호학회논문지
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• 제32권1호
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• pp.49-66
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• 2022

최근 COVID-19 팬데믹으로 인하여 많은 국가에서 감염병 예방 디지털 증명서를 위한 시스템을 도입하여 활용하고 있지만, 이에 대한 국제표준이 없어 국가 간 호환성 있는 증명서 사용의 어려움이 있다. 이에 본 논문에서는 기존 QR 코드 방식의 증명서 제출과 무선 근거리 통신 방식의 증명서 제출 방식을 비교하고 보다 개선된 무선 근거리 통신 방식의 디지털 증명서 시스템을 제안한다. 제안 시스템은 분산ID 기반의 증명서 검증 정보를 블록체인에 저장하여 국가별로 상이한 증명서의 상호 운용 체계를 구축하는 감염병 예방 디지털 증명서 시스템이다. 블록체인 기반의 신뢰앵커는 증명서 위·변조 문제를 해결하고 증명서 발행자와 제출자의 신원을 보증하여 보안성을 향상 시킬 것이다. 아울러 제안 시스템은 한 번의 증명서 제출로 다수 증명서(백신 접종증명서, 회복증명서, 검사 증명서, 신분증 등)를 일괄 검증토록 하여 이용자 편의성을 제고할 수 있을 것으로 기대한다.

• 한국전자거래학회지
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• 제10권4호
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• pp.83-100
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• 2005

본 논문은 인터넷 이용자들이 가지고 있는 사이버 공간상의 자아에 대한 개념을 살펴보고 사이버 자아에 대한 정체성 강화가 구매활동에 어떠한 영향을 주는지 분석한다. 사이버 자아를 크게 개인적인 자아와 사회적인 자아로 구분하였으며 5개의 구성요소를 설정하였다. 아바타와 온라인 게임에서의 능력치를 개인적 자아 형성요소로, 커뮤니티와 메신저를 사회적 자아의 형성요소로 설정하였으며 블로그는 개인적인 자아와 사회적 자아에 동시에 속하는 요소로 설정하였다. 사이버 자아를 강화시키기 위해 인터넷 사용자 들이 아바타, 온라인 게임의 아이템, 배경 그림 등의 사이버 아이템을 구매하려는 의도가 있는지 알아보기 위해 사이버 자아의 인지와 해당 웹사이트에 대한 충성도 및 구매의도와 관련된 설문조사를 실시하였다. 설문 결과를 바탕으로 개인적 자아와 사회적 자아를 구성하는 요인을 요인분석을 통해 도출한 후 이러한 요인이 충성도와 구매의도에 미치는 영향을 구조방정식 모형(Structural Equation Model)을 이용하여 분석하였다.

• 농촌지도와개발
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• 제16권4호
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• pp.1021-1048
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• 2009

Based on Rural living indicator -2005 survey data, in RDA this study attempted to investigate Rural Residents' real life satisfaction or identity model by the types of leisure consumption depending on each generation and explored the relationship between leisure consumption and the enhancement of self-identity/ interpersonal relationship, and that between leisure consumption satisfaction and real life satisfaction. Based on systematic random sampling with constructed questionnaires, 1,870 data were collected and analyzed. Overall, the results of this study showed that there are statistically significant differences between generation in leisure consumption. In detail, the findings of this study are as follows. The types of Rural Residents' leisure consumption can be divided into three styles including Semi-leisure type, Passive leisure type and Total leisure type consumption. The preferred types of leisure consumption of Rural Residents' were Semi-leisure type, Passive leisure type and Total leisure type in order. Except for times-pending leisure culture consumption, Semi-leisure type and Passive leisure type influenced on the enhancement of self-identity and interpersonal relationship, then the enhancement of self-identity and interpersonal relationship influenced on leisure consumption-satisfaction, and finally leisure consumption satisfaction influenced on real life satisfaction.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권11호
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• pp.5653-5672
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• 2019

In cloud computing era, an increasing number of resource-constrained users outsource their data to cloud servers. Due to the untrustworthiness of cloud servers, it is important to ensure the integrity of outsourced data. However, most of existing solutions still have challenging issues needing to be addressed, such as the identity privacy protection of users, the traceability of users, the supporting of dynamic user operations, and the publicity of auditing. In order to tackle these issues simultaneously, in this paper, we propose a traceable dynamic public auditing scheme with identity privacy preserving for cloud storage. In the proposed scheme, a single user, including a group manager, is unable to know the signer's identity. Furthermore, our scheme realizes traceability based on a secret sharing mechanism and supports dynamic user operations. Based on the security and efficiency analysis, it is shown that our scheme is secure and efficient.