Cmac.cmac.last: def of bend-osdev-cipher-modes@0.1.0.0
Import: import bend-osdev-cipher-modes@0.1.0.0/cmac.bend as Cmac
Lines 67-73 of bend-osdev-cipher-modes@0.1.0.0/cmac.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-cipher-modes@0.1.0.0/cmac.bend&start_line=67&end_line=73

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 last block: whole, xor K1; partial (or empty), padded, xor K2
def cmac.last(~K: Data, ~enc: K -> M.CmBlock -> M.CmBlock, full: Bool, +k: K, x: M.CmBlock, last: List<&2, U32>) -> M.CmBlock:
  match full:
    case True{}:
      enc(k, M.CmBlock.xor(M.CmBlock.xor(x, M.cm.block_of(last)), cmac.k1(~K, ~enc, k)))
    case False{}:
      enc(k, M.CmBlock.xor(M.CmBlock.xor(x, M.cm.block_of(B.append(last, Con{128, Nil{}}))), cmac.k2(~K, ~enc, k)))

Uses (9):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  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-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.xor
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend&name=cm.block_of
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/cmac.bend&name=cmac.k1
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/cmac.bend&name=cmac.k2