LAWS.pkcs7_pad_empty: law of bend-osdev-pkcs7@0.1.0.0
Import: import bend-osdev-pkcs7@0.1.0.0/LAWS.bend as LAWS
Lines 25-27 of bend-osdev-pkcs7@0.1.0.0/LAWS.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-pkcs7@0.1.0.0/LAWS.bend&start_line=25&end_line=27

import Base
import bend-osdev-bytes@0.1.1.0/bytes.bend as B
import bend-osdev-mode-core@0.1.0.0/mode_core.bend as M
import bend-osdev-pkcs7@0.1.0.0/pkcs7.bend as P

# PKCS #7 (RFC 5652, 6.3): the empty message becomes a whole block of 16s; 15 bytes gain one 1
law pkcs7_pad_empty:
  {P.Pkcs7.pad(16n, B.Octets.empty()) == Done{B.Octets.of_list([16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16])} : Result<&2, &2, M.CmError, B.Octets>}

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=Octets
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=Octets.empty
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-bytes@0.1.1.0/bytes.bend&name=Octets.of_list
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-mode-core@0.1.0.0/mode_core.bend&name=CmError
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-pkcs7@0.1.0.0/pkcs7.bend&name=Pkcs7.pad