The science of concealing plaintext and then revealing it is known as ___________, and the science of decrypting the ciphertext without knowledge of the key or cipher is known as ____________.

The science of concealing plaintext and then revealing it is known as _, and the science of decrypting the ciphertext without knowledge of the key or cipher is known as __.

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The science of concealing plaintext and then revealing it is known as ___________, and the science of decrypting the ciphertext without knowledge of the key or cipher is known as ____________.
A . encryption, decryption
B . cryptanalysis, cryptology
C . cryptology, cryptanalysis
D . cryptography, cryptanalysis
E . cryptography, steganography

Answer: D