Caesar Cipher - A Simple Encryption Technique

The Caesar Cipher is a fundamental encryption technique that shifts each letter in the plaintext by a fixed number of positions in the alphabet. It is one of the earliest known encryption methods and serves as an introductory tool for learning about cryptography.

Key Points

• The Caesar Cipher uses a fixed shift to encrypt messages.
• It is easy to implement but also very easy to break due to its simplicity.
• It serves as an introductory tool for learning about cryptography.

How It Works

Encryption Process

• Each letter in the plaintext is shifted by a fixed number of positions down the alphabet.
• If the shift goes past the end of the alphabet, it wraps around to the beginning.

Practical Example

With a shift of 3:

• Plaintext: HELLO
• Ciphertext: KHOOR

Real-World Application

While not used for secure encryption today, the Caesar Cipher can be found in simple puzzles and educational contexts to introduce basic cryptographic concepts.

Key Takeaways

• The Caesar Cipher uses a fixed shift to encrypt messages.
• It is not secure for modern encryption needs.
• It serves as an introductory tool for learning about cryptography.

Learn More

• Caesar Cipher on Wikipedia