We are completing a comp security project which last task is to create a program that would theoretically break a DES-ECB encrypted file through brute force. Here is the actual task exerpt. " secret.pdf.enc2 is an encrypted pdf file encrypted by the DES-ECB encryption algorithm. enc2.c is the source code of encryption, and dec2.c is the source code of decryption. Now, make a program to crack the key of the encryption using the brute force method. You need to test and make sure the program can decrypt a DEC-ECB encrypted file."