There is a dependency on the previous ‘s’ bits in every stage in – McqOptions

MCQOPTIONS

1.	There is a dependency on the previous ‘s’ bits in every stage in CFB mode. Here ‘s’ can range from ___
A.	8-16 bits
B.	8-32 bits
C.	4-16 bits
D.	8-48 bits
Answer» C. 4-16 bits

Discussion

No Comment Found

Related MCQs

The counter value in CTR modes repeats are a regular interval.
Which of the following modes does not implement chaining or “dependency on previous stage computations”?
In OFB Transmission errors do not propagate: only the current ciphertext is affected, since keys are generated “locally”.
Which of the following can be classified under advantages and disadvantages of OFB mode?i) Transmission errorsii) A bit error in a ciphertext segmentiii) Cannot recover from lost ciphertext segmentsiv) Ciphertext or segment loss
What is the fault in the above figure?
There is a dependency on the previous ‘s’ bits in every stage in CFB mode. Here ‘s’ can range from ___
Which of the following statements are truei) In the CBC mode, the plaintext block is XORed with previous ciphertext block before encryptionii) The CTR mode does not require an Initialization Vectoriii) The last block in the CBC mode uses an Initialization Vectoriv) In CBC mode repetitions in plaintext do not show up in ciphertext
Which of the following is false for ECB mode of operationi) The Plain text is broken into blocks of size 128 bytesii) Blocks can be swapped, repeated, replaced without recipient noticingiii) Good for short dataiv) Encryption of each block is done separately using a randomly generated key for each block
THE_OUTPUT_OF_THE_XOR_IS_SENT_TO_THE_NEXT_STAGE?$
Which_of_the_following_can_be_classified_under_advantages_and_disadvantages_of_OFB_mode?$