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  • 會議論文
  • OpenAccess

新型的混沌映射公式應用於多方環境中之協定

摘要


現在網路的快速發展,傳遞訊息也越來越方便,不論是由使用者上傳檔案或者接收檔案,都必須要防止網路上有惡意人士去攔截傳輸中的資料,進而查看或竄改這些內容。因此透過密碼學上的加解密演算法可以有效保護資料的機密性,然而在以往的論文中,我們發現很少探討到使用者將已解密的檔案傳給未經過檔案擁有者授權同意的其他使用者等問題。因此本論文以此為研究議題,利用一個基於混沌映射定理所提出的方法,設計出一個協定運用在多方檔案傳輸的環境。我們所提出的協定包含三個階段並根據不同的應用場合設計出三個不同場景分別為擁有者將檔案資料上傳情境、授權同意的使用者如何下載檔案情形及若要將下載資料分享時,確保只有經過檔案擁有者授權同意的使用者才能收到完整的檔案。

並列摘要


With the rapid development of Internet, sending messages becomes more and more convenient. Neither uploading files nor receiving files must prevent that malicious people intercept the transmission information and then view or tamper with the content. In general, the cryptography methodology is used to protect data confidentiality effectively. However, a very important security issue that preventing user to send decryption file to other user without authentication for original file owner is only discussed in few theses. Therefore, we propose a new formula based on chaotic mapping theorem. Then, we collocate with symmetric encryption algorithm and hash function operations to design a multi-users file transmission protocol. There are three phases including uploading, downloading and sharing in different scenarios in our proposed scheme. The major contribution is that only legal users who are authorized by the file owner are able to receive a complete file in this thesis. Finally, we will analyze the security of our proposed scheme in order to prove that it can protect information without leakage in transmission.

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