PROOF.xtsp.len16: def of bend-osdev-cipher-modes@0.1.0.0
Import: import bend-osdev-cipher-modes@0.1.0.0/PROOF.bend as PROOF
Lines 1502-1507 of bend-osdev-cipher-modes@0.1.0.0/PROOF.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-cipher-modes@0.1.0.0/PROOF.bend&start_line=1502&end_line=1507

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

# the bytes the stealing passes through: tl, then the stolen tail of b
def xtsp.len16(+tl: List<&2, U32>, +b: M.CmBlock, h: {Nat.is_lt(B.len(tl), 16n) == True{} : Bool}) -> {Nat.is_eq(B.len(B.append(tl, B.drop(B.len(tl), M.cm.bytes_of(b)))), 16n) == True{} : Bool}:
  %Equal.sym(Nat, B.len(B.append(tl, B.drop(B.len(tl), M.cm.bytes_of(b)))), Nat.add(B.len(tl), B.len(B.drop(B.len(tl), M.cm.bytes_of(b)))), li.len_append(tl, B.drop(B.len(tl), M.cm.bytes_of(b)))) : {Nat.is_eq(_, 16n) == True{} : Bool}
  %Equal.sym(Nat, B.len(B.drop(B.len(tl), M.cm.bytes_of(b))), Nat.sub(16n, B.len(tl)), li.len_drop(B.len(tl), M.cm.bytes_of(b))) : {Nat.is_eq(Nat.add(B.len(tl), _), 16n) == True{} : Bool}
  %Equal.sym(Nat, Nat.add(B.len(tl), Nat.sub(16n, B.len(tl))), 16n, na.add_sub(B.len(tl), 16n)(na.lt_le(B.len(tl), 16n)(h))) : {Nat.is_eq(_, 16n) == True{} : Bool}
  {==}

Uses (18):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.sym
  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.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_eq
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_lt
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.sub
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=append
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=drop
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=len
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/PROOF.bend&name=li.len_append
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/PROOF.bend&name=li.len_drop
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/PROOF.bend&name=na.add_sub
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/PROOF.bend&name=na.lt_le
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend&name=CmBlock
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend&name=cm.bytes_of