| Summary: | 碩士 === 逢甲大學 === 資訊工程所 === 91 === As the time goes on, network has already become a part of our daily life. The life with information technology almost combines with network, and network can provide various kinds of information and service. As the network provides more and more services, there will be more and more data transmitted through the network. Of course, there must be some important information transmitted through the network. If we do not have good security system, and someone may steal those important data, easily. So, more and more people pay attention to the area, network security, and a lot of new secrecy mechanism have been developed.
In this thesis, I want to develop a SOC platform with data encryption/decryption mechanism. With this system design, it can provide higher data transmission security for the systems that must transmit information through the network. In this thesis, I will use a system development tool that provided by ALTERA to development system, and DES circuit design to construct the main point of this thesis. I will propose three different architectures to implement this data encryption/decryption system. In the architecture1, the data encryption/decryption operation is done by software. In architecture2, we use custom instruction to add additional hardware instruction to speedup the DES data encryption/decryption operation. The last architecture will use a customized hardware to accomplish the data encryption/decryption operation. In this architecture, the first work is designing a DES circuit, and then is writing a wrapper to connect the DES circuit and the original architecture. These three different architectures let us know the performance, and the hardware space of each kind of architecture.
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