def sp.lt1
import bend-osdev-legacy-ciphers@0.1.0.0/serpent.bend as Serpentimport Base
import bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend as M
import bend-osdev-legacy-ciphers@0.1.0.0/legacy_ciphers.bend as L
167def sp.lt1(s: M.CmBlock) -> M.CmBlock:
168 match s:
169 case M.CmBlock{x0, x1, x2, x3}:
170 M.CmBlock{L.lc.rotl13.bits(x0), x1, x2, x3}