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Description
This is called "Polyalphabetic substitution" and was thought unbreakable for 400 years. The French called it the "unbreakable code". Germany used something called the "Enigma Machine" during the World Wars and it loosely followed the same principle (but with added rules to make the code harder to crack). This is a basic simulation of that cipher.

~~ CONTROLS ~~

* You may type into the Input field and the Key field.
* Encrypt button will start off the encryption algorithim.

~~ OVERVIEW ~~

The basic idea is this: You have a key, an input, and the grid. The program will take the first letter of your Input, and find it on the top row of the grid, the program will then go down the grid from this posistion until it reaches the character that is the same as the first letter as your Key.

The resulting character on the same row in the leftmost column will then be the encrypted first letter. The program will continue to do this for the second characters, third characters etc. for your input and your key until completion.

If you want to decrypt (translate) the output, all you have to do is copy and paste it back into the Input field and click "Encrypt" again. ^^

Please note that if the character you type in (I.E punctuation) does not appear in the grid, it will simply treat it as a space.

Have fun encrypting mesages for your friends! Remember: They can only see your messages if they know what your key is!

Description
This is called "Polyalphabetic substitution" and was thought unbreakable for 400 years. The French called it the "unbreakable code". Germany used something called the "Enigma Machine" during the World Wars and it loosely followed the same principle (but with added rules to make the code harder to crack). This is a basic simulation of that cipher.

~~ CONTROLS ~~

* You may type into the Input field and the Key field.
* Encrypt button will start off the encryption algorithim.

~~ OVERVIEW ~~

The basic idea is this: You have a key, an input, and the grid. The program will take the first letter of your Input, and find it on the top row of the grid, the program will then go down the grid from this posistion until it reaches the character that is the same as the first letter as your Key.

The resulting character on the same row in the leftmost column will then be the encrypted first letter. The program will continue to do this for the second characters, third characters etc. for your input and your key until completion.

If you want to decrypt (translate) the output, all you have to do is copy and paste it back into the Input field and click "Encrypt" again. ^^

Please note that if the character you type in (I.E punctuation) does not appear in the grid, it will simply treat it as a space.

Have fun encrypting mesages for your friends! Remember: They can only see your messages if they know what your key is!