This page allows you to encode text or decode text encrypted with the Atbash cypher.
Caveats:
If you are reading this paragraph, then you probably don't have JavaScript installed/enabled on your computer. At this point in time the calculators on this site are entirely dependent on JavaScript. Given enough time and money it is hoped to develop a version in the future which will be able to operate independently. Since JavaScript runs on your own computer, rather than on this server, it has been possible to set up this site much more quickly than if a server-side language was used, and it is possible to serve far more pages with the available bandwidth.
If you think that you can assist with this project in any way, then please visit the Support section and leave a message.
Definitions:
None
Formulae:
The Atbash Cypher works in a similar manner to the Caesar's Cypher, but uses a different offset for each character.
The cypher works by writing two copies of the Alphabet one above the other, but with the second one in reverse order.
Each letter in the top row corresponds with a different letter in the bottom row, but in a useful twist, the exact same process decyphers as well as encyphers text.
In this version, any UPPER-CASE letters will be converted to lower-case, special characters/punctuation will be ignored, but numbers get converted just like letters.
Instructions
Type, or Copy-and-Paste the text to be encrypted / decrypted where indicated below.
Click the 'Encrypt/Decrypt' button below the input fields.
The converted text will be displayed below.
To do further encryptions / decryptions simply change the text in the input field, and then click the 'Encrypt' or 'Decrypt' button again.