Which of the following functions provides an output which cannot be reversed and converts data
into a string of characters?

A.
Hashing

B.
Stream ciphers

C.
Steganography

D.
Block ciphers

Explanation:
Hashing refers to the hash algorithms used in cryptography. It is used to store data, such as hash
tables one of its characteristics is that it must be one-way – it is not reversible.