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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

基於多方安全計算之算術運算 / Arithmetic operations for secure multi-party computation

蕭名宏, Hsiao, Ming Hung Unknown Date (has links)
資訊安全的研究裡,運用安全多方計算的方法,可使得多方在不洩漏各自私有資訊的條件下完成某種函式的計算。其中一種做法是利用scalar product來當作計算的基礎演算邏輯單元,並進而建構其他更複雜的安全多方計算。 根據目前現有的安全多方運算協定,可再加以定義出一些基本的運算規則,像是一般的程式語言中常用到的變數型態,如整數、浮點數、布林值,我們可定義出安全的秘密資料形態來,並且要能達到算數計算就必須擁有數值處理的能力,如基本的四則運算等,所以提供了相關聯的安全計算協定。根據安全多方計算的運算平台,可具有處理算術計算的能力,使得可處理一般安全計算的問題。 我們並提供一個script轉譯工具,使得使用者可自行撰寫自己的安全多方計算程式,並可利用此工具來自動將使用者寫的程式碼轉成安全多方運算平台可接受的程式碼,如此一來,解決安全多方計算的問題將會變得更為容易。 / Protocols for secure multi-party computation (SMC) allow participants to share a computation while each party learns only what can be inferred from their own inputs and the output of the computation. This thesis concerns the implementation SMC using of a set of information theoretically secure protocols based on scalar product protocol. This main characteristic of this approach is taking the scalar product computation as the basic building, and then use it to construct more complex computation protocols. We developed an SMC implementation framework for both integers and floating numbers which comprises a set of arithmetic operations that manipulate secret values among involved parties using the scalar product protocol as the basis. Such a library of arithmetic operations is call building blocks. Besides, to ease the writing of more complex user-defined protocols, we developed a simple scripting language and a translation tool that converts user script code to SMC code, which is code composed of the building blocks we developed.

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