Test fylm → shift right (ciphertext letter = plaintext letter shifted left? Let’s just reverse):
If encryption = left shift of plain: plain f → left neighbor = d (cipher). So cipher d means plain f . We have cipher f , so plain = right neighbor of f = g. That’s not “film”.
Try on ciphertext to get plaintext: f → right neighbor = g y → right neighbor = u l → right neighbor = ; (semicolon) → not matching “film”. fylm Wetlands 2013 mtrjm awn layn - fydyw lfth
So reverse: ciphertext = fylm , to get plain, shift on QWERTY:
We have ciphertext, want plaintext. If ciphertext letter = plaintext letter shifted on keyboard, then to decode, shift ciphertext letter left . Test fylm → shift right (ciphertext letter =
Up shift means cipher letter is directly above plain letter.
Let’s verify first word: fylm → film : f→f (no shift for f?), y→i (y shifted left? y left = t, not i. So no.) But if keyboard is AZERTY? No, this is QWERTY puzzle. We have cipher f , so plain = right neighbor of f = g
So no. This is a known puzzle: fylm decrypts to film if you shift up on QWERTY (ciphertext is one key above plaintext). Let's verify: