Tool Workspace
Enter content, process with one click
1Introduction
The Vigenère cipher is a classic polyalphabetic substitution cipher that encrypts plaintext using a keyword, offering higher security than the Caesar cipher. This tool supports encryption and decryption, with customizable keys, processing only alphabetic characters while leaving others unchanged. Suitable for teaching, introductory cryptography, and fun encryption.
2How to Use
1
Enter Text
Enter the text to encrypt or decrypt in the input box.
2
Set Key
Enter an alphabetic key in the key input box, e.g., KEY.
3
Choose Operation
Choose 'Encrypt' or 'Decrypt' and click the button to execute.
3FAQ
Can the key contain numbers?
The Vigenère cipher typically uses only letters; this tool accepts only alphabetic keys, ignoring other characters.
Support Us
If this tool helps you, feel free to buy us a coffee.
