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Please use this identifier to cite or link to this item:
https://nccur.lib.nccu.edu.tw/handle/140.119/131486
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| Title: | 動態監控區塊鏈系統
Runtime Hook on Blockchain Systems |
| Authors: | 林韋廷
Lin, Wei-Ting |
| Contributors: | 郁方
蕭舜文
Yu, Fang
Hsiao, Shun-Wen
林韋廷
Lin, Wei-Ting |
| Keywords: | 區塊鏈
智能合約
以太坊
動態監控
Blockchain
Ethereum
Smart contract
Runtime hook |
| Date: | 2020 |
| Issue Date: | 2020-09-02 11:44:45 (UTC+8) |
| Abstract: | 在區塊鏈上使用硬叉機制來恢復攻擊造成的損失與區塊鏈系統的不變性相矛盾。為了防止惡意交易提前進入區塊鏈，我們提出了一種Runtime Hook技術，以同步和分析暴露在以太坊交易池中的正在進行的交易。全面了解過去和正在進行的交易，我們可以識別並強制中止惡意交易，並防止由於執行和記錄在區塊鏈中的攻擊而造成的損失。具體來說，我們修改以太坊源代碼以檢測節點的入口點，以同步從以太坊P2P網絡接收的數據，並系統地掃描交易中的可疑模式以識別潛在的攻擊。作為概念驗證，我們演示瞭如何在私有區塊鏈系統上部署建議的Runtime Hook系統，以便我們可以檢測和防止智能合約的51％攻擊中的雙花交易和重入攻擊。
Using hard-fork mechanism on the blockchain to recover the losses caused by attacks contradicts the immutable characteristic of a blockchain system. To prevent malicious transactions from getting into blockchains in advance, we propose a runtime hook technique to synchronize and analyze the ongoing transactions exposed to the Ethereum transaction pool. Having a complete view of the past and the ongoing transactions, we can identify and enforce abortion of malicious transactions and prevent losses due to attacks being executed and recorded in the blockchain. Specifically, we modify the Ethereum source code to instrument the entry point of a node to synchronize data received from the Ethereum P2P network and systematically scan suspicious patterns in transactions to identify potential attacks. As a proof-of-the-concept, we show how to deploy the proposed runtime hook system on a private blockchain system, such that we can detect and prevent transactions of double spending on the 51% attack and reentrancy attack of smart contracts. |
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| Description: | 碩士
國立政治大學
資訊管理學系
106356001 |
| Source URI: | http://thesis.lib.nccu.edu.tw/record/#G0106356001 |
| Data Type: | thesis |
| DOI: | 10.6814/NCCU202001239 |
| Appears in Collections: | [資訊管理學系] 學位論文
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