Which of the following is a cryptographic concept that operates on a fixed length of bits?

Which of the following is a cryptographic concept that operates on a fixed length of bits?
A . Block cipher
B. Hashing
C. Key stretching
D. Salting

View Answer

Answer: A

Explanation:

Single-key or symmetric-key encryption algorithms create a fixed length of bits known as a block cipher with a secret key that the creator/sender uses to encipher data (encryption) and the receiver uses to decipher it.