All the following statements about symmetric key cryptography are true except:
A) in symmetric key cryptography, both the sender and the receiver use the same key to encrypt and decrypt a message.
B) the Data Encryption Standard is a symmetric key encryption system.
C) symmetric key cryptography is computationally slower.
D) symmetric key cryptography is a key element in digital envelopes.

Question

Quizplus · Accepted Answer

Symmetric key cryptography is known for its speed and efficiency as it uses the same key for encryption and decryption, making it faster than asymmetric key cryptography. Therefore, statement C is false as it contradicts this fact.

All the Following Statements About Symmetric Key Cryptography Are True