When two different keys encrypt a plaintext message into the same
ciphertext, this situation is known as:
A.
Cryptanalysis.
B.
Public key cryptography.
C.
Hashing.
D.
Key clustering.
Explanation:
The correct answer is “Key clustering”
Answer “Public key cryptography” describes a type of cryptographic
system using a public and a private key; answer Cryptanalysis is the art/science
of breaking ciphers; answer Hashing is the conversion of a message of variable
length into a fixed-length message digest.