Khlyjyt Fatht Layf Ttshrmt... — Download- Nwdz Lshrmwtt

Next: lshrmwtt l(12)→o(15) s(19)→h(8) h(8)→s(19) r(18)→i(9) m(13)→n(14) w(23)→d(4) t(20)→g(7) t(20)→g(7) → ohsingdg — still nonsense.

If you share the full paper excerpt or the exact cipher definition from the paper, I can decode it precisely. Download- nwdz lshrmwtt khlyjyt fatht layf ttshrmt...

Given it’s from a paper (or puzzle), the intended solution might be for the whole string except "Download-" . Download- nwdz lshrmwtt khlyjyt fatht layf ttshrmt...

Given the presence of "Download-" in plaintext, the rest might be the same cipher applied to a filename or URL. Possibly it's a keyboard shift where each letter is replaced by the key to its left/right on QWERTY. Download- nwdz lshrmwtt khlyjyt fatht layf ttshrmt...