Public key encryption
A)uses one key for encoding messages and another for decoding them
B)is an enhancement to data encryption standard (DES)
C)is electronic authentication that cannot be forged
D)requires RSA, a highly secure cryptography method

Question

Quizplus · Accepted Answer

Public key encryption is a method of encryption that uses one key for encoding messages and another key for decoding them. This enables secure communication between two parties without ever having to exchange their secret keys, which is a major advantage over symmetric key encryption. Option B is incorrect because public key encryption is a separate encryption technique and not an enhancement to DES. Option C is incorrect because electronic authentication refers to the process of verifying the identity of a user or system, and public key encryption is used for encryption and decryption of messages rather than authentication. Option D is incorrect because RSA is just one of the many algorithms used for public key encryption, and there are other methods such as Diffie-Hellman key exchange and elliptic curve cryptography that are equally secure.

Public Key Encryption