PROOF.sp.hd: 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 305-310 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=305&end_line=310

import Base
import bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend as M

def sp.hd(bs: List<&2, M.CmBlock>) -> M.CmBlock:
  match bs:
    case Nil{}:
      M.CmBlock.zero()
    case Con{b, t}:
      b

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  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=CmBlock.zero