Question

Which of these does not use symmetric encryption?

A). RSA
B). Twofish
C). AES
D). DES

Answer 1

RSA does not use symmetric encryption; it is an asymmetric algorithm using a public and private key pair, unlike Twofish, AES, and DES which are symmetric algorithms.

Step-by-step explanation:

The correct answer to the question of which option does not use symmetric encryption is A) RSA. Symmetric encryption is an encryption methodology where the same key is used for both encryption and decryption of the data. RSA is an asymmetric algorithm which uses a pair of keys; a public key for encryption and a private key for decryption. On the other hand, Twofish, AES (Advanced Encryption Standard), and DES (Data Encryption Standard) all use the same key for both encrypting and decrypting, which is characteristic of symmetric encryption.