def xtsp.d2

bend-osdev-cipher-modes@0.1.0.0 · PROOF.bend:1538

import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend as M
import bend-osdev-cipher-modes@0.1.0.0/xts.bend as T

1538def xtsp.d2(~K: Data, ~dec: K -> M.CmBlock -> M.CmBlock, +k: K, +t: M.CmBlock, ec: List<&2, M.CmBlock>, +sc: M.CmBlock, +st: List<&2, U32>, +n: Nat) -> {T.xts.d2(~K, ~dec, k, t, M.CmSplit{List.append(&2, M.CmBlock, ec, Con{sc, Nil{}}), st}, n) == Done{B.Octets.of_list(T.xts.dout(~K, ~dec, k, t, ec, sc, st))} : Result<&2, &2, M.CmError, B.Octets>}:
1539  match ec:
1540    case Nil{}:
1541      {==}
1542    case Con{+e, +es}:
1543      %Equal.sym(List<&2, M.CmBlock>, T.xts.init(List.append(&2, M.CmBlock, es, Con{sc, Nil{}}), e), Con{e, es}, li.init_app(es, sc, e)) : {Done{B.Octets.of_list(T.xts.dout(~K, ~dec, k, t, _, T.xts.last(List.append(&2, M.CmBlock, es, Con{sc, Nil{}}), e), st))} == Done{B.Octets.of_list(T.xts.dout(~K, ~dec, k, t, Con{e, es}, sc, st))} : Result<&2, &2, M.CmError, B.Octets>}
1544      %Equal.sym(M.CmBlock, T.xts.last(List.append(&2, M.CmBlock, es, Con{sc, Nil{}}), e), sc, li.last_app(es, sc, e)) : {Done{B.Octets.of_list(T.xts.dout(~K, ~dec, k, t, Con{e, es}, _, st))} == Done{B.Octets.of_list(T.xts.dout(~K, ~dec, k, t, Con{e, es}, sc, st))} : Result<&2, &2, M.CmError, B.Octets>}
1545      {==}