Multiple choice

Which of the following is/are false about CFG (Cipher Feedback Mode)?

  1. CFB can be used in stream data encryption and authentication.

  2. CFB allows any number of bits like 1, 8, 64 or 28.

  3. Any change to a cipher block affects all the following blocks in CFB.

  4. None of the above

  5. Both (2) and (3).

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is false and it occurs in case of CBC (Cipher Block Chaining) mode.