def xor_pad

bend-collections@1.0.0.0 · spec/crypto/hmac.bend:46

import Base

46# Byte-wise exclusive or of K0 with a pad byte (steps 4 and 7).
47def xor_pad(ks: List<&2, U32>, +pad: U32) -> List<&2, U32>:
48  match ks:
49    case Nil{}:
50      Nil{}
51    case k <> rest:
52      U32.xor(k, pad) <> xor_pad(rest, pad)