• Journal of the Korea Academia-Industrial cooperation Society
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• 제9권4호
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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.

• The KIPS Transactions:PartC
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• 제13C권6호
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• pp.725-732
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• 2006

RBAC(Role-Based Access Control) has advantages in managing access controls, because it offers the role inheritance and separation of duty in role hierarchy structures. However, RBAC does not process delegation of permission effectively that occurs frequently in the real world. This paper proposes an Advanced Permission-Based Delegation Model(APBDM) that guarantees permanency of delegated permissions and does not violate security principle of least privilege and separation of duty. APBDM, based on the well-known RBAC96, supports both user-to-user and role-to-role delegation. A delegator can give permission to a specific person, that is delegatee, and the permission can be withdrawn whenever the delegator wants. Our model is analyzed and shown to be effective in the present paper.

• Journal of Information Processing Systems
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• 제3권2호
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• pp.82-88
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• 2007

Web services are the new building block of today's Internet, and provides interoperability among heterogeneous distributed systems. Recently in web services environment, security has become one of the most critical issues. The hackers attack one of fragile point and can misuse legitimate user privilege because all of the connected devices provide services for the user control and monitoring in real time. Also, the users of web services must temporarily delegate some or all of their rights to agents in order to perform actions on their behalf. This fact risks the exposure of user privacy information. In this paper, we propose secure delegation model based on SAML that provides confidentiality and integrity about the user information in distributed systems. In order to support privacy protection, service confidentiality, and assertion integrity, encryption and a digital signature mechanism is deployed. We build web service management server based on XACML, in order to manage services and policies of web service providers.

• The Research Journal of the Costume Culture
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• 제2권2호
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• pp.247-263
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• 1994

This study is concerned with the slsl 瑟瑟. The identity, origins of the word, kinds, the place of production, and the sues of he sl sl were examined. The world sl sl means the sapphire. The Chinese word se se(seh seh), 瑟瑟 was derived from the Hebrew word, she she meaning marble. The use, meaning and the phonetic value of the sl sl between the Chinese and the Hebrew were the same each other. It indicates that the Chinese word se se(seh seh) was the transliteration of the Hebrew word she she. The sl sl were produced in the Middle East Asia and the sl sl used in ancient China was mainly originated from the Middle East Asia. The sl sl of Silla was also the sapphire and it was an article of the imported goods from the Middle East Asia. Women of Jin gol(true bone) were not use the sl sl as a material to decorate for their combs and headdresses. Also women of yuk du pum (six du pum) were prohibited to use the sl sl as a material for their combs. It indicates that the privilege to use the sl sl for a comb and in a head dress was restricted to the queen in Silla and it remained as a symbol of nobility and dignity.

• KIISE Transactions on Computing Practices
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• 제20권10호
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• pp.555-560
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• 2014

This paper proposes the data security technology for the desktop virtualization environment using the separated software execution method. In the virtual environment where allocates separate VMs to the users, there is a benefit that the programs in one guest machine are isolated from the programs running in another guest machine, whereas in the separated execution environment that supports application virtualization, the isolation is not offered and it causes the data security problem because the applications are executed by the one root privilege in the server. To solve this problem, we provides the data security method using the server storage filter, the viewer filter, and the file mapping table in this paper.

• Proceedings of the Korea Information Processing Society Conference
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• 한국정보처리학회 2005년도 춘계학술발표대회
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• pp.1229-1232
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• 2005

국내 공공기관에서는 사이버 행정환경의 기밀성, 무결성, 신원확인, 부인방지등을 보장하기 위하여 행정전자서명인증체계(GPKI:Government Public Key Infrastructure)의 구축과 함께 모든 문서를 XML형태로 표준화하여 공공기관간의 문서를 통합하기 위한 시도를 하고 있다. 하지만 행정전자서명인증체계에서 사용하는 공개키기반(PKI)을 연동한 인증체계는 단순한 사용자 인증만을 제공하여, 공공기관의 응용업무 환경에서 요구되는 다양한 사용자의 직위, 직무, 역할정보 등의 관리가 어려우며 XML형태의 공공문서에 대한 상세한 접근제어를 지원하지 못하는 한계점이 있다. 이러한 한계점을 해결하기 위하여 본 논문에서는 공공기관에서 사용하는 인증 및 접근제어 시스템의 가상시나리오를 통하여 보안문제점을 도출하고 분석한 후에 이를 근거로 공공기관의 보안 문제점을 해결할 수 있는 보안기술인 PMI(Privilege Management Infrastructure)와 XACML(eXtensible Access Control Markup Language)을 연동한 접근제어모델을 제안하였다..

• Journal of the Korea Convergence Society
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• 제6권5호
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• pp.33-38
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• 2015

In a V2X convergence service environment, the principal service among infotainment services and driver management services must be supported centering on critical information of the driver, maintenance manager, customer, and anonymous user. Many software applications have considered solutions to be satisfied the specific requirements of driving care programs, and plans. This paper describes data flow diagram of a secure clinic system for driving car diagnosis, which is included in clinic configuration, clinic, clinic page, membership, clinic request processing, driver profile data, clinic membership data, and clinic authentication in the V2X convergence service environment. It is reviewed focusing on security threat issue of ITS diagnostic system such as spoofing, tampering, repudiation, disclosure, denial of service, and privilege out of STRIDE model.

• Journal of the Korean Society of Fashion and Beauty
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• 제5권3호
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• pp.105-110
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• 2007

With the beginning of seventeenth century, the men in France royal palace began to wear wigs and by eighteenth century wig became sole possession of men. Then, it had been become a satire thing filling one side of the era with the pouf that had been for women. All these things were closely related with the unstable social situation. The bourgeoisie expressed the anger for the privilege that come from the disparity of class consciousness. The reaction against the discriminative treatment by the illuminists stimulated the outbreak of the French Revolution on 14th, July in 1789. This paved way of characterizing the wig styles of the time. The symbolism of cultural-historical meaning in the west is not confined only in Europe. The worship of hair that is different from one cultural area to another had started with their own unique taboo consciousness and had developed to the form speaking for the expression of masculine, the symbol of man power and the extravagance of the privileged class.

• Journal of Dental Rehabilitation and Applied Science
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• 제17권2호
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• pp.85-90
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• 2001

In order to investigate the amount of oral malodor of denture wearers, concentration of volatile sulfur compounds of 20 denture wearers(10 male, 10 female) was measured by Halimeter(RH-17, Interscan, CA, USA) at following four conditions ; condition 1(with denture) : male - $415.0{\pm}90.1$, female - $430.9{\pm}101.3$ condition 2(immediately after denture removal) : male - $291.4{\pm}35.5$, female - $259.8{\pm}20.4$ condition 3(with denture after 30 minutes immersing in chlorhexidine) :male - $210.1{\pm}25.7$, 여자 - $197.4{\pm}22.2$ condition 4(with denture after 24 hours immersing in chlorhexidine) : male - $120.1{\pm}35.2$, 여자 - $109.2{\pm}20.0$ There was no sexual difference, but, value at the condition 1 showed statistically significant difference from the others(p<0.05). It is dentists' responsibility and privilege to understand and diagnose the strong association between mouth and oral malodor and treat it.

• Journal of the Korean Society of Costume
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• 제60권9호
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• pp.77-94
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• 2010

It was the era, from 1876 to 1910, that some dramatic changes, including an influx of foreign dyes and the beginning of the modern dyeing manufacture, happened in Korea. This paper explores what dyes were sold in the market in this period, who was the main seller of the goods, and how the dyers produced their products. A wide range of natural dye stuffs coexisted with the various kinds of aniline dyes, alizarin dye and synthetic indigo in the market. Coloring materials had been sold by hwapi-jeon, a group of official merchants who acquired a privilege of monopoly from the government. However, the dyes were also traded by sang-jeon and yakguk merchants in the nineteenth century. Most of the synthetic dyes sold in Korea were produced in Germany or in Japan later, and imported in large amount by Chinese, Japanese and German merchants. Yet there also existed Korean merchants and peddlers who sold the goods to the local consumers. Dyers were male and female who belonged to the middle class. They received the orders and payments from the government or merchants. Not only did they dye textiles, threads, cotton, paper and leather, but they also redyed clothes. Indigo dyers were differentiated from other dyers. Modern dyeing manufacture, which was presumably forced to keep pace with the productivity of the weaving process, appeared in the 1900s. It was a branch of the modern weaving manufacture.