| Summary: | 碩士 === 中華科技大學 === 電子工程研究所碩士班 === 101 === With the development of video camera technology, the portable video camera such as digital cameras, car camera recorders, smart phones are widely used. Nowadays, with video camera lens continuous progress, electronic products have multi-media video functions such that we can share images more conveniently. ”Every Solution Breeds the New Problems.” With that powerful device, the information security and personal privacy are becoming the huge problems that we should handle. Therefore, the real time image protection is very important.
In this thesis, a video image development platform based on real time image protection is studied. The real time image uses encryption and decryption algorithm and mode structure to perform the image data security protection. The traditional security protection is by software. its complication of security level demand and encryption and decryption algorithm adds much load to the processor and it will reduce the efficiency of the processor. In addition, the software encryption or decryption has the security risk, it is easier to be attacked. Therefore, this study uses FPGA hardware chip to achieve the encryption and decryption algorithm and also combine the webcam as the hardware protection. Other than the upgrade of hardware security, it also integrates the video system as a platform. The hardware chip can perform AES cipher and 4 types of operation mode (ECB、CBC、CFB、OFB) and also hybrid mode. It can achieve the video data security protection. Furthermore, this study presents a defect of the ECB mode structure to bring up hybrid operation mode of ECB+CBC, also to improve weakness of the ECB mode structure. Besides, with hardware mode structure for the whole security protection, and provided for studying the design of video image development platform.
Keywords: FPGA Prototype, Advanced Encryption Standard (AES), Video Security
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