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A substitution cipher that uses multiple different alphabets to encrypt each bit, character, or character block of the plaintext is known as what?
Transposition cipher
Monoalphabetic
Polyalphabetic
Permutation cipher
The correct response is polyalphabetic. The polyalphabetic form of substitute cipher uses a different alphabet to encrypt each bit, character, or character block.
edit: changed single alphabet to multiple alphabets int he question to make teh answer correct. [EDIT] I get that this is cryptography fundamentals, but we shouldn't be testing on these grade-school ciphers. No one is using Ceaser ciphers or substitution ciphers in practice, and honestly, knowing that RoT-13 is the Ceaser cipher, or that the other name for OTP is the Vernam Cipher, is not useful in the workplace. Two cents.
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