FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -This part of the process is called encryption (sometimes encipherment ). The ciphertext is transmitted to the receiver. The receiver converts the ciphertext message back to its plaintext form. This part of the process is called decryption (sometimes decipherment ).

Detailed explanation-2: -To decrypt a message, you reverse the process by first finding the row that corresponds to the current letter in the key, then looking along that row until you find the corresponding letter in the ciphertext. The letter at the top of this column is the plaintext letter.

Detailed explanation-3: -To change the cipher text into plain text is known as decryption. Cipher text is also known as encrypted or encoded information because it contains a form of the original plain text that is unreadable by a human or computer without the proper cipher to decrypt it.

Detailed explanation-4: -Ciphertext is encrypted text transformed from plaintext using an encryption algorithm. Ciphertext can’t be read until it has been converted into plaintext (decrypted) with a key. The decryption cipher is an algorithm that transforms the ciphertext back into plaintext.