Which is not true of counter mode (CTR), which is available to be used in block algorithms?
A.
Able to preprocess key stream
B.
Encryption cannot execute in parallel, unlike OFB
C.
Counters increment for each data block
D.
Used as part of the IEEE 802.11i standard
Explanation:
Unlike OFB, CTR is capable of running (encrypting and decrypting) in
parallel due to the fact that output is not chained to previous blocks of data. This
design dramatically improves efficiency and speed.