AES Mix column & 8 BIT TEA OFB

1. Implement the Mixcolumn function, which is part of the AES algorithm (with 10 rounds). Your program must accept one parameter, namely a file that contains 16 bytes numbers, and then output the result of the mixcolumn operation. [login to view URL] task comprises two parts. Part one. This task is to implement a 8-bit OFB TEA algorithm. See the code for TEA in the lecture notes. Part two. Encrypt your student number using 8-bit OFB TEA algorithm as devised above. Part three. Add all the digits of your student number mod 8. Let the result be c. Then implement c-bit OFB TEA algorithm, and encrypt your student number using this algorithm. Compare the time needed to encrypt using 8-bit OFB TEA algorithm and c-bit OFB TEA algorithm, and write your result in Task6Report.PDF. Explain what has happened.