光辉的确定有限自动机: 05-05 23:29:23 0x52, 0x7F, 0x7B, 0x73,...

python
data=[0x52,0x7F,0x7B,0x73,0x78,0x65,0x7F,0x79,0x78,0x77,0x7A,0x49,0x45,0x7A,0x77,0x65,0x7E,0xB7]
print(len(data), bytes(data))
print('chars', ''.join(chr(b) if 32<=b<127 else '.' for b in data))
# xor single byte keys that produce printable last maybe
import string
printable=set(bytes(string.printable,'ascii'))
cands=[]
for k in range(256):
    out=bytes([b^k for b in data])
    if all(32<=c<127 for c in out[:-1]): # allow last?
        cands.append((k,out))
len(cands), cands[:20]


(52,
 [(2, b'P}yqzg}{zuxKGxug|\xb5'),
  (3, b'Q|xp{f|z{tyJFytf}\xb4'),
  (9, b'[vrzqlvpq~s@Ls~lw\xbe'),
  (10, b'Xuqyrousr}pCOp}ot\xbd'),
  (11, b'Ytpxsntrs|qBNq|nu\xbc'),
  (13, b'_rv~uhrtuzwDHwzhs\xba'),
  (14, b'\\qu}vkqwvytGKtykp\xb9'),
  (15, b']pt|wjpvwxuFJuxjq\xb8'),
  (16, b'BokchuoihgjYUjgun\xa7'),
  (17, b'CnjbitnhifkXTkfto\xa6'),
  (18, b'@miajwmkjeh[Whewl\xa5'),
  (19, b'Alh`kvljkdiZVidvm\xa4'),
  (20, b'Fkoglqkmlcn]Qncqj\xa3'),
  (21, b'Gjnfmpjlmbo\\Pobpk\xa2'),
  (22, b'Dimensional_Slash\xa1'),
  (23, b'Ehldorhno`m^Rm`ri\xa0'),
  (24, b'Jgck`}ga`obQ]bo}f\xaf'),
  (25, b'Kfbja|f`ancP\\cn|g\xae'),
  (27, b'Id`hc~dbclaR^al~e\xac'),
  (28, b'NcgodycedkfUYfkyb\xab')])

python
data=[0x52,0x7F,0x7B,0x73,0x78,0x65,0x7F,0x79,0x78,0x77,0x7A,0x49,0x45,0x7A,0x77,0x65,0x7E,0xB7]
out=[(b & 0x7f)^0x16 for b in data]
print(bytes(out), ''.join(map(chr,out)))
for b,c in zip(data,out):
    print(f"{b:#04x} -> {b&0x7f:#04x} xor 0x16 = {c:#04x} {chr(c)!r}")