Xcbc.cr.xcbc.encb: def of bend-osdev-crypto@0.1.0.0
Import: import bend-osdev-crypto@0.1.0.0/xcbc.bend as Xcbc
Lines 24-30 of bend-osdev-crypto@0.1.0.0/xcbc.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-crypto@0.1.0.0/xcbc.bend&start_line=24&end_line=30

import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B

# one block of bytes encrypted (a string the format refuses stays as it is)
def cr.xcbc.encb(~K: Data, ~Blk: Data, ~enc: K -> Blk -> Blk, ~blk_to: Blk -> B.Octets, +k: K, x: Maybe<&2, Blk>, +o: B.Octets) -> B.Octets:
  match x:
    case None{}:
      o
    case Some{b}:
      blk_to(enc(k, b))

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=Octets