A Novel Chaotic Maps Formula for Multi-users Environment Protocol

• Main Authors: Tsai, Cheng-Chun, 蔡政均
• Other Authors: Kuo, Wen-Chung
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/zpc9xc

碩士 === 國立雲林科技大學 === 資訊工程系 === 105 === 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.