Question

Stream ciphers are also sometimes called ________ ciphers. A) Block

B) Key

C) One-time pad

D) Asymmetric

Answer 1

Stream ciphers are sometimes called one-time pad ciphers, encrypting data one bit or byte at a time, and are unrelated to asymmetric ciphers.

Step-by-step explanation:

Stream ciphers are also sometimes called one-time pad ciphers. Unlike block ciphers that encrypt data in fixed-size blocks, stream ciphers encrypt plaintext one bit or byte at a time, often using a pseudorandom stream of bits as the key. This approach can be highly secure when the key stream is truly random and used only once, hence the term one-time pad. On the other hand, asymmetric ciphers, also known as public-key cryptography, involve a pair of keys, a public key and a private key, which are used for encrypting and decrypting the messages. They are not related to the concept of stream ciphers.