The Data Encryption Standard (DES) is a published federal encryption standard created to protect unclassified computer data and communications. The DES algorithm is the most widely used encryption algorithm in the world

从万方数据库中下的介绍des加密以及解密的两片文章，是用FPGA实现的,pdf格式.希望对理解des加密以及解密的原理有所帮助。 -From the descr iption of the database under the des encryption and decryption of the two articles is the use of FPGA implementation, pdf format. Hope to understand the principles of