You need to make sure a number the user types in is non-negative. Which of the following functions would you use?

input

fabs

int

pos

What is added to the < meta > tag to describe the encoding type?

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).

Acase study allows a more detailed look at the life of a single subject than any other study.