编写 C 程序实现 DES 加、解密： (1) 编程实现 基于自己的名字来构造一 DES 密钥； (2) 应用 (1) 获得的密钥将一副灰度 图 (BMP 格式 ) 进行加、解 密； (3) 应用 ECB 和 CBC 两种操作模式分别完成-C program to prepare DES Encryption and Decryption: (1) programming based on their names to construct a DES key (2) applications (1) to obtain the key to a grayscale (BMP format) to increase, decryption (3) Application of ECB and CBC mode of operation, respectively, the completion of two (2)