Multiple choice

Which of the following is incorrect about Block ciphers in cryptography?

  1. These ciphers process messages in blocks.

  2. These ciphers process messages a bit or byte at a time.

  3. Many current ciphers are block ciphers.

  4. These ciphers use bits, that have to be available before the block can be processed.

  5. These are used in broader range of applications.
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B Correct answer
Explanation

This is incorrect as the stream ciphers process messages a bit or byte at a time when en/decrypting.  

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