Many commercial encryption programs use a technology called which is designed to recover encrypted data if users forget their passphrases or if the user key is corrupted after a system failure.

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).

You are new to microsoft certification and want to start out by getting a certification geared around windows 8. what microsoft certification should you pursue?

What are listed in the vertical columns across the top of the event editor? a. file names b. conditions c. check marks d. action types