Atbash Cipher Decoder
Atbash has no key: the alphabet is reversed, and the text reads right away. The Russian alphabet works alongside Latin.
0 characters · 0 letters
Letter frequencies are taken for the chosen language: the key search depends on them.
Usually it is treated the same as е: an alphabet of 32 letters instead of 33.
Decryption
Other versions
by similarity to a languageCiphertext analysis
All Caesar shifts — 0 variants
Atbash flips the alphabet: the first letter swaps with the last, the second with the second-to-last. There is no key and only one possible variant, so the decoded text appears as soon as you paste the input.
The cipher is its own inverse: the same action both encrypts and decrypts. Testing a guess is simple — if the substitution produces a readable phrase, the cipher was Atbash.
Where it came from
The technique was invented for the Hebrew alphabet: "aleph" swapped with "tav", "bet" with "shin". The name comes from those four letters. In the Book of Jeremiah the word "Sheshakh", read back through the substitution, turns into "Bavel", which means Babylon.
If the text does not read
Atbash is not involved. Try the Caesar shift search or Vigenère key search: both pages work with the same text.
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