Which statement about cryptography is FALSE?
A. Asynchronous encryption occurs when encryption or decryption requests are processed from a queue.
B. Symmetric encryption is an encryption method whereby a single private key both encrypts and decrypts the data.
C. When using a digital signature, the message is used as an input to a hash function, and the sender's public key encrypts the hash value.
D. Key clustering occurs when different encryption keys generate the same ciphertext from the same plaintext message.
C
Explanation: When using a digital signature, the message is used as an input to a hash function, and the sender's PRIVATE, not public, key encrypts the hash value.
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