Classical Ciphers
Explore historical encryption methods with interactive tools
Interactive Cipher Tool
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Ciphertext:
Decrypted Text:
Cipher Information
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Caesar Cipher
Each letter is shifted by a fixed number of positions in the alphabet
Example: HELLO with shift 3 → KHOOROverview
Security
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Caesar Cipher
One of the simplest and most widely known encryption techniques. Each letter is shifted by a fixed number of positions.
Substitution Cipher🔑
Vigenère Cipher
A method of encrypting alphabetic text using a simple form of polyalphabetic substitution.
Polyalphabetic Cipher🚂
Rail Fence Cipher
A form of transposition cipher that derives its name from the way in which it's encoded.
Transposition Cipher