Question 3. (0.5 marks) Answer the following questions (True/False): c. Decryption is the process of converting plaintext into ciphertext. d. A cipher is an algorithm used to encrypt and decrypt text. e. A transposition cipher is an example of modern cryptography. f. In public-key cryptography, each user has two related keys, one public and one private. g. A digital signature allows the recipient to verify that the message truly originates from the stated sender