Description

The Caesar Cipher, also known as the Caesar Shift, is a simple substitution cipher that was used by the ancient Roman military commander Julius Caesar.

The encryption process of the Caesar Cipher is straightforward. It replaces each letter in the plaintext with another letter based on a fixed offset (shift). For example, with an offset of 3, the letter A in the plaintext would be replaced by D, B would be replaced by E, and so on. If the offset goes beyond the end of the alphabet, it wraps back to the beginning for continued substitution.

The decryption process is the reverse of encryption, where each letter in the ciphertext is replaced by the same offset in the opposite direction, effectively shifting to the left by the corresponding number of positions. The Caesar Cipher is known for its simplicity but low security. With only 26 possible offsets, it can be easily cracked through brute force. Therefore, the Caesar Cipher is typically used for educational and entertainment purposes rather than for secure communication.