______ is not a public key cryptosystem.
2020
______ is not a public key cryptosystem.
- A.
El Gamal
- B.
Rabin
- C.
AES
- D.
RSA
Attempted by 176 students.
Show answer & explanation
Correct answer: C
The correct option is C. AES (Advanced Encryption Standard) is a symmetric key symmetric cipher that uses the same secret key for both encryption and decryption. In contrast, El Gamal, Rabin, and RSA are all asymmetric (public key) cryptosystems that utilize a mathematically related public-private key pair.