In the Caesar Cipher encryption process, which step is the decryption step?

In the context of the Caesar Cipher, the decryption process involves reversing the encryption that has been applied to the original message. The Caesar Cipher works by shifting letters of the alphabet by a fixed number of places. To decrypt the message, you would need to shift the letters in the opposite direction by the same number of places used for encryption.

If Step 4 is identified as the decryption step, it is likely because this step involves taking the encrypted output and applying the reverse shift to retrieve the original plaintext. Each character in the encrypted message is adjusted back to its original position in the alphabet, effectively restoring the original message. This process is crucial for reversing the effects of the encryption and recovering the readable text.

The steps that precede decryption typically involve preparing the message, applying the shift for encryption, and generating the encrypted text. Therefore, the final action, which is decryption, occurs in the last step, making it fundamental to understand that the Caesar Cipher’s decryption process is inherently about reversing the shifts applied during encryption.