• Title/Summary/Keyword: Hyperledger

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Hyperledger Fabric Based Architecture for Enhanced Security of IoT Devices in Smart Home Environments (스마트 홈 환경에서 IoT 장치의 보안 강화를 위한 Hyperledger Fabric 기반 Architecture)

  • Park, Ji-Ho;Maeng, Ju-Hyun;Joe, In-Whee
    • Proceedings of the Korea Information Processing Society Conference
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    • pp.93-95
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    • 2021
  • 최근, 다양한 정보의 수집 및 처리가 필요한 스마트 홈, 의료, 교통, 제조 등 여러 산업 분야에서 IoT(Internet of Things)가 많이 활용되고 있다. 특히 스마트 홈 환경에서 IoT 장치로 수집되는 정보는 민감한 개인 정보를 포함할 수 있기 때문에 특정 그룹이나 개인만이 해당 정보에 접근할 수 있도록 관리할 필요가 있다. 또한, IoT 환경에서 Blockchain 기반으로 데이터의 신뢰성을 확보하는 분산 저장소의 경우, 지연 시간의 증가 문제가 발생될 수 있기 때문에 실시간 데이터 수집에 대한 처리 속도를 향상할 방안이 필요하다. 본 논문에서는 사용자와 IoT 장치 간 생성한 그룹 ID 로 해당 그룹에 대한 접근 권한을 관리하고, Hyperledger Fabric 과 별도의 데이터베이스 운용으로 실시간성, 신뢰성을 향상할 수 있는 Hyperledger Fabric 기반 스마트 홈 Architecture 를 제안한다. 이 Architecture는 IoT 장치가 사용되는 다양한 환경에서 보안성, 실시간성, 신뢰성을 향상할 수 있을 것이다.

A Study on Implementation of BlockChain Voting System using Hyperledger Fabric (Hyperledger Fabric을 활용한 블록체인 투표시스템 구현에 관한 연구)

  • Hwang, Won-Yong;Kim, Hyo-Kwan
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.13 no.4
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    • pp.298-305
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    • 2020
  • This paper deals with the implementation of electronic voting system using permissioned block chain technology. Cases studies have recently been under way in many industrial areas to review the application of the blockchain based electronic voting system. The existing electronic voting system was easily exposed by hacking because of its centralized characteristics, making it difficult to ensure the reliability and transparency of the voting system itself. In this study, we proposed key considerations and concepts to ensure the reliability and transparency of voters and voting stakeholder by utilizing a hyperledger fabric which is nowadays widely used as a permissioned blockchain.

Client Authentication Scheme based on Infinitely Overlapped Hashchains on Hyperledger Fabric (Hyperledger Fabric을 이용한 중첩형 무한 해시체인 기반의 클라이언트 인증기법)

  • Shin, Dong Jin;Park, Chang Seop
    • Convergence Security Journal
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    • v.18 no.4
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    • pp.3-10
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    • 2018
  • Each online user should perform a separate registration and manage his ID and password for each online commerce or SNS service. Since a common secret is shared between the user and the SNS server, the server compromise induces the user privacy breach and financial loss. In this paper, it is considered that the user's authentication material is shared between multiple SNS servers for user authentication. A blockchain service architecture based on Hyperledger Fabric is proposed for each user to utilize an identical ID and OTP using the enhanced hash-chain-based OTP.

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A Design for a Hyperledger Fabric Blockchain-Based Patch-Management System

  • Song, Kyoung-Tack;Kim, Shee-Ihn;Kim, Seung-Hee
    • Journal of Information Processing Systems
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    • v.16 no.2
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    • pp.301-317
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    • 2020
  • An enterprise patch-management system (PMS) typically supplies a single point of failure (SPOF) of centralization structure. However, a Blockchain system offers features of decentralization, transaction integrity, user certification, and a smart chaincode. This study proposes a Hyperledger Fabric Blockchain-based distributed patch-management system and verifies its technological feasibility through prototyping, so that all participating users can be protected from various threats. In particular, by adopting a private chain for patch file set management, it is designed as a Blockchain system that can enhance security, log management, latest status supervision and monitoring functions. In addition, it uses a Hyperledger Fabric that owns a practical Byzantine fault tolerant consensus algorithm, and implements the functions of upload patch file set, download patch file set, and audit patch file history, which are major features of PMS, as a smart contract (chaincode), and verified this operation. The distributed ledger structure of Blockchain-based PMS can be a solution for distributor and client authentication and forgery problems, SPOF problem, and distribution record reliability problem. It not only presents an alternative to dealing with central management server loads and failures, but it also provides a higher level of security and availability.

A Survey on Hyperledger Fabric Technologies (하이퍼레저 패브릭의 기술 동향 조사)

  • Kim, Hanjun;Choi, Eunmi
    • Proceedings of the Korea Information Processing Society Conference
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    • pp.121-124
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    • 2019
  • 가상 화폐 분야의 핵심 기술로 소개된 블록체인(Blockcahin) 기술은 4차 산업혁명에서 중심이 되는 기술로 주목받고 있다. 다양한 산업의 서비스에서 사용하기에는 성능적인 부분에서 고려해야 할 부분이 있다. 본 논문에서는 허가형(permissioned) 블록체인에서 현재 가장 활발하게 기술 확산을 하고 있는 하이퍼레저 패프릭(Hyperledger Fabric)을 중심으로 0.6버전부터 1.2버전까지 관련된 연구들을 조사하였다. 특히 주요한 품질 속성인 성능을 향상하기 위한 Hyperledger Fabric의 기술 동향에 대하여 연구 활동 내용들을 비교 분석하였다.

Hyperledger Blockchain Design for Sharing, Spreading, and Protecting National Cybersecurity Information

  • Park, Dea-woo;Lee, Sang-hyeon
    • Journal of information and communication convergence engineering
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    • v.18 no.2
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    • pp.94-99
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    • 2020
  • Real cyberterrors are invisible and difficult to identify. Even after a cyberattack, its origin and cause are difficult to determine. Cyberterrorism results in invisible cyberwars, and it is believed that World War IV will begin with a cyberwarfare. For national cybersecurity, information on cybersecurity must be collected, shared, and disseminated. In this study, we investigate a blockchain system designed based on the World Cybersecurity Agreement. National cybersecurity information is linked to the hyperledger blockchain system network through the National Cybersecurity Center. National cybersecurity information designs and uses a secure protocol for protection; further, it is collected, shared, and disseminated to treaty countries. National cybersecurity information is shared and spread by the hyperledger blockchain system, and it uses a cyberdefense system that responds to the cyberattacks and their origin. This paper serves as a policy and legislation guideline for forming a World Cybersecurity Agreement between countries.

Identification of Counterfeit Android Malware Apps using Hyperledger Fabric Blockchain (블록체인을 이용한 위변조 안드로이드 악성 앱 판별)

  • Hwang, Sumin;Lee, Hyung-Woo
    • Journal of Internet Computing and Services
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    • v.20 no.2
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    • pp.61-68
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    • 2019
  • Although the number of smartphone users is continuously increasing due to the advantage of being able to easily use most of the Internet services, the number of counterfeit applications is rapidly increasing and personal information stored in the smartphone is leaked to the outside. Because Android app was developed with Java language, it is relatively easy to create counterfeit apps if attacker performs the de-compilation process to reverse app by abusing the repackaging vulnerability. Although an obfuscation technique can be applied to prevent this, but most mobile apps are not adopted. Therefore, it is fundamentally impossible to block repackaging attacks on Android mobile apps. In addition, personal information stored in the smartphone is leaked outside because it does not provide a forgery self-verification procedure on installing an app in smartphone. In order to solve this problem, blockchain is used to implement a process of certificated application registration and a fake app identification and detection mechanism is proposed on Hyperledger Fabric framework.

Secure Healthcare Data Management and Sharing Platform Based on Hyperledger Fabric (하이퍼레저 패브릭 기반의 안전한 헬스케어 데이터 관리 및 공유 플랫폼 개발 연구)

  • Choi, Ye-Jin;Kim, Kyoung-jin
    • Journal of Internet Computing and Services
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    • v.21 no.1
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    • pp.95-102
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    • 2020
  • In this paper, we present a healthcare data integration management and sharing platform based on a permissioned blockchain-based system called the Hyperledger fabric. The Hyperledger fabric allows patients to easily access their data, share the data with agencies that need it, and also reward participants. The healthcare data is stored in the blockchain by a de-identification process. Privacy is protected by setting detailed access rights to the stored data. The proposed model provides higher security than other models using a public blockchain. This study confirms that patient data can be stored more securely, by comparing the data stored in the blockchain with that from existing information storage methods.

Design and Implementation of a Digital Evidence Management Model Based on Hyperledger Fabric

  • Jeong, Junho;Kim, Donghyo;Lee, Byungdo;Son, Yunsik
    • Journal of Information Processing Systems
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    • v.16 no.4
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    • pp.760-773
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    • 2020
  • When a crime occurs, the information necessary for solving the case, and various pieces of the evidence needed to prove the crime are collected from the crime scene. The tangible residues collected through scientific methods at the crime scene become evidence at trial and a clue to prove the facts directly against the offense of the suspect. Therefore, the scientific investigation and forensic handling for securing objective forensic in crime investigation is increasingly important. Today, digital systems, such as smartphones, CCTVs, black boxes, etc. are increasingly used as criminal information investigation clues, and digital forensic is becoming a decisive factor in investigation and trial. However, the systems have the risk that digital forensic may be damaged or manipulated by malicious insiders in the existing centralized management systems based on client/server structure. In this paper, we design and implement a blockchain based digital forensic management model using Hyperledger Fabric and Docker to guarantee the reliability and integrity of digital forensic. The proposed digital evidence management model allows only authorized participants in a distributed environment without a central management agency access the network to share and manage potential crime data. Therefore, it could be relatively safe from malicious internal attackers compared to the existing client/server model.

Consortium Blockchain based Forgery Android APK Discrimination DApp using Hyperledger Composer (Hyperledger Composer 기반 컨소시움 블록체인을 이용한 위조 모바일 APK 검출 DApp)

  • Lee, Hyung-Woo;Lee, Hanseong
    • Journal of Internet Computing and Services
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    • v.20 no.5
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    • pp.9-18
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    • 2019
  • Android Application Package (APK) is vulnerable to repackaging attacks. Therefore, obfuscation technology was applied inside the Android APK file to cope with repackaging attack. However, as more advanced reverse engineering techniques continue to be developed, fake Android APK files to be released. A new approach is needed to solve this problem. A blockchain is a continuously growing list of records, called blocks, which are linked and secured using cryptography. Each block typically contains a cryptographic hash of theprevious block, a timestamp and transaction data. Once recorded, the data inany given block cannot be altered retroactively without the alteration of all subsequent blocks. Therefore, it is possible to check whether or not theAndroid Mobile APK is forged by applying the blockchain technology. In this paper, we construct a discrimination DApp (Decentralized Application) against forgery Android Mobile APK by recording and maintaining the legitimate APK in the consortium blockchain framework like Hyperledger Fabric by Composer. With proposed DApp, we can prevent the forgery and modification of the appfrom being installed on the user's Smartphone, and normal and legitimate apps will be widely used.