def xfp_from_xpub(xpub):
# sometime we need to BIP32 fingerprint value: 4 bytes of ripemd(sha256(pubkey))
# UNTESTED
kk = bfh(Xpub.get_pubkey_from_xpub(xpub, []))
assert len(kk) == 33
xfp, = unpack('<I', hash_160(kk)[0:4])
return xfp
def xfp_from_xpub(xpub):
# sometime we need to BIP32 fingerprint value: 4 bytes of ripemd(sha256(pubkey))
# UNTESTED
kk = bfh(Xpub.get_pubkey_from_xpub(xpub, []))
assert len(kk) == 33
xfp, = unpack('<I', hash_160(kk)[0:4])
return xfp
def get_password_for_storage_encryption(self) -> str:
# since ledger firware 1.6.1 we need to provide the full derivation path
# see https://support.ledger.com/hc/en-us/articles/360015738179-Derivation-path-vulnerability-in-Bitcoin-derivati>
derivation = (
"m/44'"
"/" + str(constants.net.BIP44_COIN_TYPE) + "'"
"/4541509'" # ascii 'ELE' as decimal ("BIP43 purpose")
"/1112098098'") # ascii 'BIE2' as decimal
# note: using a different password based on hw device type is highly undesirable! see #5993
xpub = self.get_xpub(derivation, "standard")
password = Xpub.get_pubkey_from_xpub(xpub, ()).hex()
return password
def get_password_for_storage_encryption(self) -> str:
# note: using a different password based on hw device type is highly undesirable! see #5993
derivation = get_derivation_used_for_hw_device_encryption()
xpub = self.get_xpub(derivation, "standard")
password = Xpub.get_pubkey_from_xpub(xpub, ()).hex()
return password