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    Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/137672


    Title: 具隱私強化之分散式資料加密交易平台
    Decentralized data encryption trading platform with enhanced privacy
    Authors: 李怡萱
    Li, Yi-Hsuan
    Contributors: 左瑞麟
    Tso, Ray-Lin
    李怡萱
    Li, Yi-Hsuan
    Keywords: 資料交易平台
    環簽章
    隱身地址
    儲存證明
    代理人重加密
    星際文件
    Data trading platform
    Ring signature
    Stealth address
    Proof of storage
    Proxy re-encryption
    IPFS
    Date: 2021
    Issue Date: 2021-11-01 11:59:17 (UTC+8)
    Abstract: 在網路發達的現代，資訊已經不限於以紙本形式存在，數位化的資訊也成為極其重要的資產，越來越多資訊分享和交易以數位形式出現在網路上，隨之而來的像是資料與交易安全性，使用者的隱私等多方面存在許多隱患，然而現有的資料交易平台並不完全可以信任，集中式儲存對使用者隱私和成本有負面影響，現行的去中心化存儲解決方案因為沒有可行的運作模式而缺乏節點的參與，資料的提供者也缺少對資料交易權的掌握。
    本研究提出使用區塊鏈和星際文件系統(IPFS)等多個技術結合的具隱私強化之分散式資料加密交易平台，資料部分利用代理人重加密技術進行保護並保存於IPFS中，結合儲存證明進行驗證，實現安全且可靠的存儲、交易過程結合環簽章與隱身地址保障交易雙方身分隱私，此外也有適當的獎勵來激勵節點的運作，後續在相關研究章節也對一些現行的系統進行評比，在這些技術的支持下為交易平台市場提供改進的參考。
    In the modernera when the Internet is developed, information is no longer limited to the existence of paper, and digital information has become an extremely important asset. More and more information sharing and transactions appear on the Internet in digital form. There are many hidden dangers in many aspects such as data and transaction security, user privacy, etc. However, the existing data transaction platform is not completely trustworthy. Centralized storage has a negative impact on user privacy and cost. The current decentralized storage solutions do not have a good operating model and lack the participation of nodes, and the data provider does not have control over the right to data transactions.
    This research proposes a decentralized data encryption trading platform with enhanced privacy that uses a combination of multiple technologies such as blockchain and Inter Planetary File System (IPFS). The data part is protected by proxy re-encryption technology and stored in IPFS, combined with storage certificates for verification. Achieve safe and reliable storage, the transaction process combines ring signatures and stealth addresses to protect the identity and privacy of both parties in the transaction. In addition, there are appropriate rewards to incentivize the operation of the node. In the follow-up related research chapters, some current systems are also evaluated. In these technologies with the support of the trading platform, it provides an improved reference for the trading platform market.
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    Description: 碩士
    國立政治大學
    資訊科學系
    107971014
    Source URI: http://thesis.lib.nccu.edu.tw/record/#G0107971014
    Data Type: thesis
    DOI: 10.6814/NCCU202101615
    Appears in Collections:[Department of Computer Science ] Theses

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