Pkcs7.pkcs7.diff: def of bend-osdev-cipher-modes@0.1.0.0
Import: import bend-osdev-cipher-modes@0.1.0.0/pkcs7.bend as Pkcs7
Lines 42-48 of bend-osdev-cipher-modes@0.1.0.0/pkcs7.bend: https://jend.leeeet.dev/read.txt?path=bend-osdev-cipher-modes@0.1.0.0/pkcs7.bend&start_line=42&end_line=48

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

# 0 when every byte of xs is v
def pkcs7.diff(xs: List<&2, U32>, +v: U32, acc: U32) -> U32:
  match xs:
    case Nil{}:
      acc
    case Con{h, t}:
      pkcs7.diff(t, v, U32.or(acc, U32.xor(M.cm.byte(h), v)))

Uses (5):
  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=Base/base.bend&name=U32.or
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.xor
  https://jend.leeeet.dev/definition.txt?path=bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend&name=cm.byte