def ad_okb

bend-collections-laws-crypto@1.0.0.0 · proofs/crypto/curve25519/freeze.bend:76

import Base
import bend-collections-laws-crypto@1.0.0.0/src/crypto/curve25519/field.bend as F
import bend-collections-laws-crypto@1.0.0.0/proofs/lib/word.bend as WD
import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/curve25519/limbs.bend as LM
import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/curve25519/poly.bend as PL
import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/curve25519/fieldops.bend as FO

76def ad_okb(+one: Nat, +h1: {one == 1n : Nat}, +x: List<&2, U32>, +cp: List<&2, U32>, +hx: {LM.okb(32n, x, 255n) == True{} : Bool}, +hk: {LM.okb(32n, cp, 128n) == True{} : Bool}) -> {LM.okb(32n, F.addl(x, cp), WD.sc(28n, one)) == True{} : Bool}:
77  +e = PL.addl_okb(one, h1, 32n, x, cp, 255n, 128n, hx, LM.okb_lea(32n, cp, 128n, hk), PL.okb_len_le(32n, cp, 128n, hk), FO.lt32_small(one, h1, Nat.add(255n, 128n), {==}))
78  PL.okb_mono(32n, F.addl(x, cp), Nat.add(255n, 128n), WD.sc(28n, one), FO.le_small(one, h1, Nat.add(255n, 128n), {==}), e)