Take the points and report my question too​

3. bob is arguing that if you use output feedback (ofb) mode twice in a row to encrypt a long message, m, using the same key each time, it will be more secure. explain why bob is wrong, no matter what encryption algorithm he is using for block encryption (15 points).

What are three software programs for mobile computing?

Name the range function that would generate the following list of integers values: 0,1,2,3,4,5.