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bip32 version numbers (xpub headers): use t/u/U/v/V for testnet

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This commit is contained in:
SomberNight 2018-02-13 16:45:41 +01:00
parent cc19de9db3
commit ea66333e48
1 changed files with 33 additions and 25 deletions
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58
lib/bitcoin.py
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@ -47,28 +47,6 @@ def read_json(filename, default):
return r return r
# Version numbers for BIP32 extended keys
# standard: xprv, xpub
# segwit in p2sh: yprv, ypub
# native segwit: zprv, zpub
XPRV_HEADERS = {
'standard': 0x0488ade4,
'p2wpkh-p2sh': 0x049d7878,
'p2wsh-p2sh': 0x295b005,
'p2wpkh': 0x4b2430c,
'p2wsh': 0x2aa7a99
}
XPUB_HEADERS = {
'standard': 0x0488b21e,
'p2wpkh-p2sh': 0x049d7cb2,
'p2wsh-p2sh': 0x295b43f,
'p2wpkh': 0x4b24746,
'p2wsh': 0x2aa7ed3
}
class NetworkConstants: class NetworkConstants:
@classmethod @classmethod
@ -83,6 +61,21 @@ class NetworkConstants:
cls.DEFAULT_SERVERS = read_json('servers.json', {}) cls.DEFAULT_SERVERS = read_json('servers.json', {})
cls.CHECKPOINTS = read_json('checkpoints.json', []) cls.CHECKPOINTS = read_json('checkpoints.json', [])
cls.XPRV_HEADERS = {
'standard': 0x0488ade4, # xprv
'p2wpkh-p2sh': 0x049d7878, # yprv
'p2wsh-p2sh': 0x0295b005, # Yprv
'p2wpkh': 0x04b2430c, # zprv
'p2wsh': 0x02aa7a99, # Zprv
}
cls.XPUB_HEADERS = {
'standard': 0x0488b21e, # xpub
'p2wpkh-p2sh': 0x049d7cb2, # ypub
'p2wsh-p2sh': 0x0295b43f, # Ypub
'p2wpkh': 0x04b24746, # zpub
'p2wsh': 0x02aa7ed3, # Zpub
}
@classmethod @classmethod
def set_testnet(cls): def set_testnet(cls):
cls.TESTNET = True cls.TESTNET = True
@ -95,6 +88,21 @@ class NetworkConstants:
cls.DEFAULT_SERVERS = read_json('servers_testnet.json', {}) cls.DEFAULT_SERVERS = read_json('servers_testnet.json', {})
cls.CHECKPOINTS = read_json('checkpoints_testnet.json', []) cls.CHECKPOINTS = read_json('checkpoints_testnet.json', [])
cls.XPRV_HEADERS = {
'standard': 0x04358394, # tprv
'p2wpkh-p2sh': 0x044a4e28, # uprv
'p2wsh-p2sh': 0x024285b5, # Uprv
'p2wpkh': 0x045f18bc, # vprv
'p2wsh': 0x02575048, # Vprv
}
cls.XPUB_HEADERS = {
'standard': 0x043587cf, # tpub
'p2wpkh-p2sh': 0x044a5262, # upub
'p2wsh-p2sh': 0x024285ef, # Upub
'p2wpkh': 0x045f1cf6, # vpub
'p2wsh': 0x02575483, # Vpub
}
NetworkConstants.set_mainnet() NetworkConstants.set_mainnet()
@ -893,11 +901,11 @@ def _CKD_pub(cK, c, s):
def xprv_header(xtype): def xprv_header(xtype):
return bfh("%08x" % XPRV_HEADERS[xtype]) return bfh("%08x" % NetworkConstants.XPRV_HEADERS[xtype])
def xpub_header(xtype): def xpub_header(xtype):
return bfh("%08x" % XPUB_HEADERS[xtype]) return bfh("%08x" % NetworkConstants.XPUB_HEADERS[xtype])
def serialize_xprv(xtype, c, k, depth=0, fingerprint=b'\x00'*4, child_number=b'\x00'*4): def serialize_xprv(xtype, c, k, depth=0, fingerprint=b'\x00'*4, child_number=b'\x00'*4):
@ -919,7 +927,7 @@ def deserialize_xkey(xkey, prv):
child_number = xkey[9:13] child_number = xkey[9:13]
c = xkey[13:13+32] c = xkey[13:13+32]
header = int('0x' + bh2u(xkey[0:4]), 16) header = int('0x' + bh2u(xkey[0:4]), 16)
headers = XPRV_HEADERS if prv else XPUB_HEADERS headers = NetworkConstants.XPRV_HEADERS if prv else NetworkConstants.XPUB_HEADERS
if header not in headers.values(): if header not in headers.values():
raise BaseException('Invalid xpub format', hex(header)) raise BaseException('Invalid xpub format', hex(header))
xtype = list(headers.keys())[list(headers.values()).index(header)] xtype = list(headers.keys())[list(headers.values()).index(header)]