Parallel encryption is possible with a block cipher operating in CFB mode.

Name: Parallel encryption is possible with a block cipher operating in CFB mode.
Brand: Quizplus
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Question

Quizplus · Accepted Answer

In CFB (Cipher Feedback) mode, each block of plaintext is encrypted sequentially where the output of the encryption function is fed back to encrypt the next block of plaintext. This dependency chain means that parallel processing of blocks is not possible.

Parallel Encryption Is Possible with a Block Cipher Operating in CFB