Which type of cipher is able to encrypt a fixed-length block of plaintext into a 128-bit block of ciphertext at any one time?
- transform
- stream
- hash
- symmetric
- block
Explanation: Block ciphers transform a fixed-length block of plaintext into a block of ciphertext. To decrypt the ciphertext, the same secret key to encrypt is used in reverse.
Exam with this question: Cybersecurity Essentials Chapter 4 Quiz Answers
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