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研究生: 劉方哲
Fang-Che Liu
論文名稱: 無線傳輸加解密聲音與影像於8位元AES嵌入式系統的建構
Wireless Transmission Encryption and Decryption of Audio and Video in the 8-bit AES Embedded Systems Constructed
指導教授: 黃奇武
Huang, Chi-Wu
張吉正
Chang, Chi-Jeng
學位類別: 碩士
Master
系所名稱: 工業教育學系
Department of Industrial Education
論文出版年: 2012
畢業學年度: 100
語文別: 中文
論文頁數: 62
中文關鍵詞: 高等加密標準嵌入式系統PicoBlaze交握協定
英文關鍵詞: AES, Embedded system, PicoBlaze, Handshaking
論文種類: 學術論文
相關次數: 點閱:122下載:0
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  • 本論文以高等加密標準(Advanced Encryption Standard, AES)演算法為基礎建立於硬體平台上,並整合軟體介面傳輸資料,應用於影像和聲音的無線加解密傳輸系統。
      本篇論文重點為將其8-bit AES實作於嵌入式系統,提升加密速度,達成電腦之間資料加解密傳輸,系統架構主要分成三部分,首先為使用軟體做出傳輸介面,讓傳輸任何類型的資料不用另外轉換,可以簡便的傳輸聲音及影像檔,第二部分為改良硬體電路架構,修改PicoBlaze微處理器控制資料至AES的加密運算,讓微處理器傳遞資料更加簡化,減少處理加解密資料的時脈週期數,最後為改良電腦與嵌入式系統之間的傳輸方式,加入交握協定與FIFO暫存器,讓學長系統達到傳輸速度上的改善,並且分析AES演算法在資料上加密的效果,使用軟體來驗證,來了解AES是否適用於圖片加密上。
    開發工具上主要是使用Microsoft Visual C#與Xilinx公司所提供的軟體 ISE10.1版,並且利用spartan-3E 1600E嵌入式平台與晶片中的PicoBlaze微處理器來達成加解密傳輸系統。

    This thesis is based on the Advanced Encryption Standard (Advanced Encryption Standard, AES) algorithm based hardware platform, and integrate the software interface to transfer data, used in wireless encryption and decryption of images and sound transmission system.
    This thesis focuses on its 8-bit AES real embedded systems, to enhance the encryption speed, to achieve data encryption and decryption of transmission between computers, system architecture is divided into three parts, first to use software Interface to transfer any type of data without additional conversion can easy transfer of audio and video files, the second part is to improve the hardware circuit architecture, modify the PicoBlaze microprocessor-controlled data to the AES encryption operation, the microprocessor transmit data more streamlined, reducing the number of clock cycles to process encrypted data, the last to join the handshaking and FIFO registers for transmission between the computer and embedded systems, seniors of the system to achieve improvement in transmission speed, and the analysis of the effect of AES algorithm to encrypt the data on the use the software to verify about AES are applicable to the picture encryption.
    Development tools is to use a software ISE10.1 version provided by Xilinx and Microsoft Visual C#, PicoBlaze microprocessor and spartan-3E 1600E Embedded platforms and chips to achieve the transmission system of encryption and decryption.

    摘  要 i ABSTRACT ii 誌 謝 iii 目  錄 iv 圖 目 錄 vi 表 目 錄 ix 第一章  緒論 1 1.1  研究背景 1 1.2  研究動機 3 1.3  研究目的 4 1.4  研究步驟 5 第二章  AES與嵌入式系統介紹 6 2.1  高等加密標準演算法 6 2.2  位元組取代轉換與反位元組轉換(SubBytes / InvSubBytes) 7 2.3  移列轉換與反移列轉換(ShiftRows / InvShiftRows) 12 2.4  混行轉換與反混行運算(MixColumns / InvMixColumns) 13 2.5  金鑰加法運算(AddRoundkey) 15 2.6  金鑰擴展(KeyExpansion) 16 2.7  嵌入式系統(Embedded System) 17 第三章  文獻探討 19 3.1  8-bit AES IP 19 3.2  8 bit-AES傳輸架構 24 3.3  無線鍵盤傳輸加密之設計與實現 26 3.4  FIFO 緩衝暫存器的應用 30 3.5  UART 31 第四章  AES影像加密之受限與改善軟體分析 35 4.1  C#軟體模擬實現AES應用 35 4.2  AES對圖形加密的效果 36 4.3  圖形加密改善方式 39 4.4  AES對圖形加密改良後的實驗 41 第五章  AES無線對傳架構實現 43 5.1  Picoblaze 44 5.2  8-bit AES 控制單元設計 48 5.3  無線傳輸介面 50 5.4  流量控制架構 52 5.5  FIFO暫存器設計 54 第六章  實驗結果與未來展望 56 6.1  FIFO暫存器測試 56 6.2  8-bit AES 無線傳輸測試 57 6.3  結論與未來展望 59 參考文獻 60

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