def parse_message_signature(self, response, message, pubkey):
# Prepend the message for signing as done inside the card!!
message = to_bytes(message, 'utf8')
hash = sha256d(msg_magic(message))
coordx= pubkey.get_public_key_bytes()
recid=-1
for id in range(4):
compsig=self.parse_to_compact_sig(response, id, compressed=True)
# remove header byte
compsig2= compsig[1:]
try:
pk = ECPubkey.from_sig_string(compsig2, id, hash)
pkbytes= pk.get_public_key_bytes(compressed=True)
except InvalidECPointException:
continue
if coordx==pkbytes:
recid=id
break
if recid == -1:
raise ValueError("Unable to recover public key from signature")
return compsig
def code_hashid(cls, txt: str) -> str:
txt = txt.lower()
x = to_bytes(txt, 'utf8')
hash = sha256(x).hexdigest()
return hash[-3:].upper()
def code_hashid(cls, txt: str) -> str:
txt = txt.lower()
x = to_bytes(txt, 'utf8')
hash = sha256(x).hexdigest()
return hash[-3:].upper()
def code_hashid(self, txt):
x = to_bytes(txt, 'utf8')
hash = sha256(x).hexdigest()
return hash[-3:].upper()