def X25519.checked

bend-collections-laws-crypto@1.0.0.0 · spec/crypto/curve25519/x25519.bend:150

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/x25519.bend as X

150def X25519.checked(+one: Nat, +h1: {one == 1n : Nat}, +k: List<&2, U32>, +u: List<&2, U32>) -> Type:
151  {X.x25519(k, u) == Bool.pick(Maybe<&2, List<&2, U32>>, Bool.and(FS.tight(k), FS.tight(u)), Some{x25519(one, k, u)}, None{}) : Maybe<&2, List<&2, U32>>}