ICT decryption recovery – UGC NET Question

Decryption applies a cryptographic key and algorithm to ciphertext to retrieve the original plaintext. It is the necessary counterpart of encryption in secure communication systems. Without decryption, authorised users could not read protected information. Thus, the process is called decryption.

Option A:
Option A is correct because decryption precisely denotes reversing encryption to recover the original data.

Option B:
Option B, encryption, is the forward process of encoding data and does not describe restoration to readable form.

Option C:
Option C, hashing, produces fixed length digests for integrity checking but is generally one way and not used to recover original data.

Option D:
Option D, scanning, may refer to searching or virus checking and is not related to cryptographic reversal.