• Title/Summary/Keyword: 바코드

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A New Low-Cost Mutual Authentication Protocol in RFID based on Hash Function (해시함수 기반의 새로운 저비용 RFID 상호인증 프로토콜)

  • Bae, Woo-Sik;Lee, Jong-Yun;Kim, Sang-Choon
    • The Journal of Korean Association of Computer Education
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    • v.14 no.1
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    • pp.175-185
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    • 2011
  • Recently RFID systems have been introduced in place of barcode systems to industries such as logistics, distribution, and manufacturing. Due to security vulnerabilities in wireless communication between the reader and tags, however, the authentication protocols for the communication have also been researched extensively. In order to solve the vulnerability of previously proposed protocols, this paper thus proposes an authentication protocol that satisfies the security requirements in the RFID system and minimizes the quantity of computation such as random number generation, transmitting the micro-time of databases. In addition, it is expected that the proposed cross authentication protocol is safe against replay attack, spoofing attack, traffic analysis, and eavesdropping attack when it is applied to the RFID system. Also, it has advantages such as providing a high level of security at a lower manufacturing cost.

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The Improved UCI Identifier Syntax for Convergence Digital Contents (융합 디지털콘텐츠에 적합한 UCI 식별자 구문구조 개선)

  • Kang, Sang-ug;Park, Sanghyun;Lim, Gyoo Gun
    • Journal of the Institute of Electronics and Information Engineers
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    • v.53 no.9
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    • pp.82-88
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    • 2016
  • The proposed new UCI syntax is compatible with the existing identifier and defines fixed length in such cases as printable ID, bar code and QR code which may entail better usage of identifier itself. For the compatibility, the identifiable metadata "key" is used for the existing UCI identifier and "UCI" element of metadata is defined for the new UCI identifier. The new UCI identifier plays roles of the resolution service and representation, and the old UCI identifier plays a role of internal DB management. Also, the object code has two types, meaningless and meaningful. The meaningful object code type can be used according the content classification standards in various field as comics, games, advertisement etc. The standardization activities can be supported by the root agency of UCI.

DNA barcoding of Schisandraceae in Korea (한국산 오미자과의 DNA 바코드)

  • Youm, Jung Won;Han, Sang-Wook;Seo, Seon Won;Lim, Chae Un;Oh, Sang-Hun
    • Korean Journal of Plant Taxonomy
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    • v.46 no.3
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    • pp.273-282
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    • 2016
  • The establishment of a DNA barcode database at the regional scale and assessments of the utility of DNA barcodes are crucial for conservation biology and for the sustainable utilization of biological resources. Schisandraceae is a small family consisting of ca. 45 species. It contains many economically important species, such as Schisandra chinensis, which is widely used as a source in tonic beverages and in oriental medicine. In Korea, three species, S. chinensis, S. repanda, and Kadsura japonica, are distributed. We evaluated the level of variation of the DNA sequences of rbcL, matK, and the ITS regions from 13 accessions representing the distributional range of the three species. The three DNA barcode regions were easily amplified and sequenced. The minimum values of the interspecific genetic distances among S. chinensis, S. repanda, and K. japonica either separately or in combination are 4- to 23-fold higher than the maximum value of the intraspecific distance, showing that there is a clear DNA barcoding gap in the regions for Korean Schisandraceae. Phylogenetic analyses of the three DNA barcode regions, separately and simultaneously, indicate that all of the DNA barcode regions are useful for identifying a species of Schisandraceae in Korea. The distinctiveness of the three species of Schisandraceae was also supported at the species level when Chinese and Japanese populations were added. The results of this study indicate that three concatenated regions constitute the best option for DNA barcoding in Schisandraceae in Korea.

Suggestion for Mobile Tourism Information Supply System' Using RTLS and 2D Barcode (RTLS와 2D 바코드를 응용한 모바일 관광정보 제공 시스템의 구현 방안)

  • Yang, Sung-Soo;Huh, Hyang-Jin;Park, Si-Sa;Jo, Tae-Joong
    • The Journal of the Korea Contents Association
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    • v.7 no.9
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    • pp.81-88
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    • 2007
  • Having been speed development of information delivery using the mobile phone, it is generalization. The Mobile has one of the importance for their information searcher as tool. It is widely recognized that tourism information can be defined as useful and reliable reference which significantly influence the traveler' decision-making. This paper presents pioneer and ongoing study of the method for the pinpionting mobile tourism information system with RTLS, 2D Barcode and mobile phone itself. And, this paper relief that benefit and influence of TCO a view on the business administration points.

The data transmission of the of u-lD sensor networks configuration with a Bluetooth (Bluetooth를 이용한 u-lD센서네트워크 구성에서의 데이터 전송)

  • Kim Young-kil;Park Ji-hoon
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.9 no.2
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    • pp.242-246
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    • 2005
  • RFID(Radio Frequency Identification) which is emerging from a change in digital convergence paradigm and recently rapidly advancing throughout the overall society is the core technology based on Ubiquitous network. In other words, This is a technology to identify the information of the object and recognize the situation by attaching electrical tag to an object and using Reader that can read the information of the object. With the emergence of the technology, it has turned the existing maintenance of the product into the network and intelligence of the product control by using the bar cord to maintain the product and will lead a revolution throughout overall society by affecting the fields of distribution and product maintenance as well as those of medicines, chemicals and food which the electrical tag can be attached to. his paper shows that utilizing the Bluetooth which is a local wireless telecommunication in the standalone imbedded system can implement the piconet configuration among the Readers and the data telecommunication with the main server.

An Effective Detection of Print Image Forgeries Based on Modeling of Color Matrix : An Application to QR Code (컬러 매트릭스 모델링에 의한 영상 인쇄물 위변조 검출 기법 : QR코드에의 적용)

  • Choi, Do-young;Kim, Jin-soo
    • The Journal of the Korea Contents Association
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    • v.18 no.10
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    • pp.431-442
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    • 2018
  • 2-dimensional barcode, QR code has been used for containing various information such as image, video, map, and business cards. Currently, a smartphone is used as a QR code scanner, displaying the code and converting it to a standard URL for a website. However, QR codes are not very common in encrypted application and so have a few applications. This paper proposes a new color-code, which integrates the conventional QR code and color design, and can be effectively used in some product certification system. The proposed method exploits the fact that genuine code is produced by CMYK color model, but the counterfeit is captured by RGB color model and during this process, color information of the code is changed. This paper introduces the color matrix model to measure the distortion between genuine code and counterfeit code. By investigating the statistical characteristics of color matrix, an effective detection of print image forgeries are designed. Various experiments with color codes show that the proposed system can be effectively used in product certification systems.

An Embedded Information Extraction of Color QR Code for Offline Applications (오프라인 응용을 위한 컬러 QR코드의 삽입 정보 추출 방법)

  • Kim, Jin-soo
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.24 no.9
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    • pp.1123-1131
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    • 2020
  • The quick-response (QR) code is a two-dimensional barcode which is widely being used. Due to several interesting features such as small code size, high error correction capabilities, easy code generation and reading process, the QR codes are used in many applications. Nowadays, a printed color QR code for offline applications is being studied to improve the information storage capacity. By multiplexing color information into the conventional black-white QR code, the storage capacity is increased, however, it is hard to extract the embedded information due to the color crosstalk and geometrical distortion. In this paper, to overcome these problems, a new type of QR code is designed based on the CMYK color model and the local spatial searching as well as the global spatial matching is introduced in the reading process. These results in the recognition rate increase. Through practical experiments, it is shown that the proposed algorithm can perform the bit recognition rate improvement of about 3% to 5%.

Rapid Management Mechanism Against Harmful Materials of Agri-Food Based on Big Data Analysis (빅 데이터 분석 기반 농 식품 위해인자 신속관리 방법)

  • Park, Hyeon;Kang, Sung-soo;Jeong, Hoon;Kim, Se-Han
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.40 no.6
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    • pp.1166-1174
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    • 2015
  • There were the attempts to prevent the spread of harmful materials of the agri-food through the record tracking of the products with the bar code, the partial information tracking of the agri-food storage and the delivery vehicle, or the control of the temperature by intuition. However, there were many problems in the attempts because of the insufficient information, the information distortion and the independent information network of each distribution company. As a result, it is difficult to prevent the spread over the life-cycle of the agri-food using the attempts. To solve the problems, we propose the mechanism mainly to do context awareness, predict, and track the harmful materials of agri-food using big data processing.

Strong Yoking Proof Protocols for RFID Tags (RFID tag를 위한 강력한 Yoking Proof Protocols)

  • Cho, Jung-Sik;Yeo, Sang-Soo;Kim, Sung-Kwon
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.32 no.3A
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    • pp.310-318
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    • 2007
  • The RFID system is a non-contact automatic identification system that identifies tags through a reading device by attaching small, inexpensive tags on goods. This system is expected to supplant barcodes, the contactless reading technique that is most widely used at present. The RFID system can be applied in a variety of areas. Among those, Ari Juels proposed an environment to prove that a pair of tags has been scanned simultaneously And he presented a yoking proof protocol for this. But the yoking-proof protocol is vulnerable to replay attack. Although modified yoking-proof protocols for alleviating this drawback have been proposed, they are not immune to replay attack, either. In this paper, we analyze problems of existing yoking-proof protocols and present a new protocol, which will make replay attack difficult, based on this analysis. We have also extend this protocol so that it can provide yoking proofs for n tags.

Xylodon flaviporus, a Newly Recorded Macrofungi in Dokdo, South Korea (독도에서 새롭게 발견된 Xylodon flaviporus)

  • Jo, Jong Won;Kwag, Young-Nam;Cho, Sung Eun;Han, Sang-Kuk;Han, Jae-Gu;Oh, Seunghwan;Kim, Chang Sun
    • The Korean Journal of Mycology
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    • v.47 no.3
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    • pp.241-247
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    • 2019
  • In 2017, we collected a wood-decay fungus growing on a dead and decaying herbaceous plant (Reynoutria sachalinensis (F. Schmidt) Nakai) in Dokdo, the far-eastern island of South Korea. Morphologically, this species is characterized by resupinate, coriaceous to corky basidiocarps, poroid hymenophores, pseudodimitic hyphal system, and ellipsoid basidiospores. Based on morphological observation and internal transcribed spacer of ribosomal DNA, the fungus was identified as Xylodon flaviporus (Berk. & M.A. Curtis ex Cooke) Riebesehl & Langer. It is only the second macrofungal species reported from Dokdo, and R. sachalinensis is the first herbaceous plant to be identified as a host for X. flaviporus.