Proof.done_okm: def of bend-collections-laws-crypto@1.0.0.0
Import: import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/kdf/proof.bend as Proof
Lines 75-79 of bend-collections-laws-crypto@1.0.0.0/proofs/crypto/kdf/proof.bend: https://jend.leeeet.dev/read.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/crypto/kdf/proof.bend&start_line=75&end_line=79

import Base
import bend-collections-laws-crypto@1.0.0.0/src/crypto/kdf.bend as KDF
import bend-collections-laws-crypto@1.0.0.0/spec/crypto/hkdf.bend as Spec
import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/kdf/okm.bend as O

# out is the specification's OKM.
def done_okm(+prk: List<&2, U32>, +info: List<&2, U32>, +len: Nat, +out: List<&2, U32>, +h: {KDF.expand(prk, info, len) == Done{out} : Result<&2, &2, KDF.KdfError, List<&2, U32>>}) -> {Spec.okm(prk, info, len) == out : List<&2, U32>}:
  Equal.trans(List<&2, U32>, Spec.okm(prk, info, len), KDF.blocks(len, prk, info, Nil{}, 1), out,
    Equal.sym(List<&2, U32>, KDF.blocks(len, prk, info, Nil{}, 1), Spec.okm(prk, info, len), O.okm_correct(prk, info, len)),
    done_value(prk, info, len, out, Nat.is_le(len, 8160n), h))

Uses (13):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.sym
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.trans
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_le
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/crypto/kdf/okm.bend&name=okm_correct
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/proofs/crypto/kdf/proof.bend&name=done_value
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/spec/crypto/hkdf.bend&name=okm
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/kdf.bend&name=KdfError
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/kdf.bend&name=blocks
  https://jend.leeeet.dev/definition.txt?path=bend-collections-laws-crypto@1.0.0.0/src/crypto/kdf.bend&name=expand