def aria_dd21
import bend-osdev-legacy-ciphers@0.1.0.0/PROOF.bend as PROOFimport Base
import bend-osdev-legacy-ciphers@0.1.0.0/aria.bend as A
8345def aria_dd21(+s: A.LcAriaSt) -> {s == A.aria.d21(A.aria.u21(s)) : A.LcAriaSt}:
8346 %aria_dd20(A.aria.e20(s)) : {s == A.aria.e20(_) : A.LcAriaSt}
8347 aria_e20(s)