The Caesar cipher is one of the oldest and simplest encryption techniques.
How it works
- Each letter is shifted by N positions (ROT13 shifts by 13).
- A → N, B → O, C → P (for ROT13).
- Numbers and special characters unchanged.
- Applying ROT13 twice returns original text.
ROT13 specifics
- Shift by 13 positions (half the alphabet).
- Self-inverse: encrypt and decrypt are identical.
- Used to obscure spoilers, hints, answers.
Security
- Not secure for real encryption!
- Trivial to break (only 26 possible shifts).
- Use only for obfuscation, not security.
- Educational tool for learning cryptography basics.
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