介绍des加密以及解密的三片文章，是用FPGA实现的。能加深对des加密以及解密的原理的理解。对用FPGA来实现des加密以及解密有帮助。-Descr iption des encryption and decryption of the three articles is the use of FPGA implemented. Can deepen their understanding of des encryption and decryption of the principle of understanding. Using FPGA to realize on the encryption and decryption des helpful.