• The Journal of the Korea Contents Association
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• v.17 no.4
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• pp.375-383
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• 2017

In 2015, Constitutional court of Korea declared that the Resident Registration Act was unconformable to Constitution. Therefore, the Resident Registration Act have to amend the article before 2018 for allowing to change one's Resident Registration Number. The most expensive cost to change one's Resident Registration Number System is the uncomfortable cost of changing the Number. This study invests the uncomfortable cost of changing the Number by Willingness to pay Method. In result, the cost of changing all 13 numbers would \ 160,000, the cost of changing 7 numbers would \ 108,000, and the cost of making Second Registration Number would \ 110,000. This result could be used to analyze the B/C ratio of changing the Resident Registration Number System.

• The Journal of the Korea Contents Association
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• v.16 no.11
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• pp.128-138
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• 2016

On 23th December in 2015, Constitutional court of Korea decided the Resident Registration Act which could not changed one's Resident Registration Number was Unconformable to Constitution. And declared that the Resident Registration Act had to amend the article. This study analyzes the issues and preferences of people about the modification methods of Resident Registration Number System. In result, the residents agree on the autonomy of residents registration number change and prefer not including personal information to including personal information in registration number system. And the residents want to operate the Second number system besides resident registration number. However, they don't want to pay the change cost of resident registration number system. This results give a few of implications when the change methods of resident registration system would be prepared.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.25 no.3
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• pp.673-689
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• 2015

Resident Registration Number(RRN) has been used broadly by public institutions or civilian departments as a means of personal identification due to its effectiveness and convenience in managing the information. Recently, because of personal information leakage including resident registration number, the potential damage is increasing public anxiety. In this situation, there have been demands requiring systems that can end the link between the resident registration number and personal information. In order to solve the problem, multiple alternatives are under consideration. In this research, we will discuss limits, needs for change of the system, and the basic concepts or traits that new registration number require. Also, by comparing the alternatives being discussed, we will analyze personal information security level and the cost required for reorganizing the system to present alternative that has high effectiveness.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.24 no.4
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• pp.721-737
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• 2014

The Resident Registration Number(RRN) system has been effectively acted as a national identification system since it was enforced. On the other hand, there are some problems such as leakages of personal informations including RRNs on a large scale and each RRN makes a pair with each person in all areas of the society. Nevertheless leakages of them might cause a big damage, there is no radical countermeasure for they are never changed in actual fact. In Republic of Korea, a RRN acts as a primary key of a database, so it has to be protected by severing the connectivity between leaked RRNs and the other personal data. In this paper, the Unconnected Random Personal Identification Number system is proposed for preventing damage of data spills by removing a dependency which the RRN has. Furthermore, this paper suggests the solutions against some potential issues in the system.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.907-909
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• 2012

주민등록번호는 주민생활의 편익 증진과 행정사무의 적정한 처리를 목적으로 도입되었으나 인터넷의 발달과 함께 관행적이고 무분별하게 사용되어 왔다. 수집된 주민등록번호가 해킹 등의 유출사고로 명의도용 등 범죄에 악용될 우려가 커지자 이를 근본적으로 해결하기 위하여 2011년 방송통신위원회는 인터넷상 주민등록번호 수집 이용을 제한하는 법 제도적 정책을 추진하였다. 정보통신망법이 개정되어 주민등록번호의 사용이 제한되면서 사업자에게 본인확인, 연령확인 등 법률의무의 이행이나 고객의 분쟁조정 등 목적을 위해 주민등록번호를 대체할 본인확인수단이 필요하게 되었다. 본 논문에서는 주민등록번호를 이용자가 입력하지 않으며 보편적으로 사용하고 있는 인프라를 이용하고 단순한 입력정보의 변경을 통해 본인확인을 할 수 있는 방안을 제안한다.

• Journal of KIISE
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• v.42 no.5
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• pp.681-689
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• 2015

Personal information includes information about a living human individual. It is the information identifiable through name, resident registration number, and image, etc. Personal information which is collected by institutions can be wrongfully used, because it contains confidential information of an information object. In order to prevent this, a method is used to remove personal identification elements before distributing and sharing the data. However, even when the identifier such as the name and the resident registration number is removed or changed, personal information can be exposed in the case of a linking attack. This paper proposes a new anonymization technique to enhance data utility. To achieve this, attributes that are utilized in service tend to anonymize at a low level. In addition, the anonymization technique of the proposal can provide two or more anonymized data tables from one original data table without concern about a linking attack. We also verify our proposal by using the cooperative game theory.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.972-974
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• 2011

최근 인터넷을 통한 개인정보 유출사례가 빈번히 발생하고 있으며, 유출된 개인정보는 변경 및 회수가 어렵고 제 2,3의 범죄로 이어지고 있다. 최근 국내 주요 사이트 및 데이터베이스의 개인정보 유출사고가 빈번했으며, 그에 대한 대책수립이 이루어지지 않은 상황임에도 불구하고 국내 포털사이트는 물론 소규모 웹 사이트에서도 주민등록번호(개인식별번호)를 요구하고 있다. 본 논문은 국내와 미국의 사례를 통해 개인 식별번호 관리 방법에 대해 비교하고 있다.

• Journal of Korea Society of Digital Industry and Information Management
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• v.12 no.3
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• pp.65-74
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• 2016

The Korean resident registration number has been used since 1962 as a personal identification number. The Korean government assigns this number to each korean citizen and it is not able to be changed. In 2000s, as the Internet was rapidly spreaded out, personal information such as the Korean resident registration number, name, home address, and phone number was leaked. The companies provide diverse internet service while collecting personal information. However, personal information was sometimes leaked because of hacking, poor information management and so on. As s results, some of citizens asked government and court of Korea to change the Korean resident registration number because they suffered material damage and emotional distress. The constitutional court decided to be able to change the number from 2018. In this study, the Korean resident registration number which is possible to change, serial number, public certificate, I-PIN, and My-PIN were analyzed comparatively. In addition, considerations when the Korean resident registration number was changed were discussed. The public certificate and I-PIN were appropriate to the case of on-line Korean resident registration number. The Korean resident registration number, serial number, My-PIN were appropriate to the case of off-line Korean resident registration number. Lastly, it would be efficient to manage the Korean resident registration number separately such as on-line and off-line.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.28 no.1
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• pp.41-51
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• 2018

Format preserving encryption(FPE) performs encryption with preserving the size and format of plain-text. Therefore, it is possible to minimize the structural change of the database before and after the encryption. For example, when encrypting data such as credit card number or social security number, it is possible to maintain the existing database structure because FPE outputs the same form of cipher-text as plain-text. Currently, the National Institute of Standards and Technology (NIST) recommends FF1 and FF3 as standards for FPE. Recently, in Korea, FEA, which is a very efficient FPE algorithm, has been adopted as the standard of FPE. In this paper, we analyze FEA and measure the performance of FEA by optimizing it in various environments.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.2
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• pp.452-458
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• 2021

The value and importance of personal information are increasing due to the increasing number of fields where the Internet environment and computing environment are used, and user authentication technology is also changing. Until now, accredited certificates, which are mainly used in the financial sector, are being replaced with biometric authentication technology due to the problem of revocation. However, another problem is that biometric information cannot be modified once it is leaked. Recently, with the advent of blockchain technology, research on user authentication methods has actively progressed. In this paper, both public certificate and blockchain-based user authentication can be used without system change, and a new DID issuance and reissuance method that can replace the resident registration number is presented. The proposed system can be used without restrictions in a blockchain. However, the currently used DID requires installation of an application at the Interworking Support Center for verification. Since a DID can be authenticated without registering as a member, indiscriminate information collection can be prevented. Security, convenience, and determinism are compared with the existing system, and excellence is proven based on various attack methods, its portability, and proxy use.