How have computers changed overtime

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).

So im doing this school challenge and the teachers said whats the average text a student gets a day so i need to get about 20 in a day but dont know how can you guys 2163371293

During physical science class ben and jerry connected three identical lightbulbs in parallel to a battery where happens when ben removes one of the lightbulbs from it’s socket