def sub_value

bend-collections-laws-crypto@1.0.0.0 · proofs/crypto/curve25519/proof.bend:54

import Base
import bend-collections-laws-crypto@1.0.0.0/spec/crypto/curve25519/field.bend as FS
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/crypto/curve25519/fieldops.bend as FO
import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/curve25519/prime.bend as PR

54def sub_value(+one: Nat, +h1: {one == 1n : Nat}, +a: List<&2, U32>, +b: List<&2, U32>, +ha: {FS.tight(a) == True{} : Bool}, +hb: {FS.tight(b) == True{} : Bool}) -> FS.Sub.value(one, h1, a, b, ha, hb):
55  at_p(one, h1, z => {Nat.mod(FS.value(F.sub(a, b)), z) == FS.fsub(z, FS.value(a), FS.value(b)) : Nat}, FO.sub_mod(one, h1, pp1(one), PR.hP(one, h1), a, b, ok(a, ha), ok(b, hb)))