Atbash is its own inverse: run the output through again to get the original back.
Frequently asked questions
What is the Atbash cipher?
An ancient Hebrew substitution cipher that mirrors the alphabet: the first letter becomes the last, the second becomes the second-last, and so on.
How do I decode an Atbash message?
Run it through the same tool. Encoding and decoding are the exact same operation.
Is it secure?
No. It is a fixed substitution with no key, so it is trivial to reverse. Use it for fun and puzzles only.
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