def fromSeed(seed = None):
if seed is None:
seed = os.urandom(MIN_SEED_LEN)
if len(seed) < MIN_SEED_LEN:
raise ValueError("HDPrivateKey seed must be at least 32 bytes long")
signed64 = hmac.new(HMAC_MAGIC_KEY, seed, hashlib.sha512).digest()
return HDPrivateKey(privkey = PrivateKey.from_bytes(signed64[:32]), chain = signed64[32:])
def fromSeed(seed=None):
if seed is None:
seed = os.urandom(MIN_SEED_LEN)
if len(seed) < MIN_SEED_LEN:
raise ValueError(
"HDPrivateKey seed must be at least 32 bytes long")
signed64 = hmac.new(HMAC_MAGIC_KEY, seed, hashlib.sha512).digest()
return HDPrivateKey(privkey=PrivateKey.from_bytes(signed64[:32]),
chain=signed64[32:])
def from_string(b58_str):
data = utils.encoding.a2b_hashed_base58(b58_str) # TODO checksum?
chain = data[HDPrivateKey.ChainCodeStart : HDPrivateKey.ChainCodeEnd]
depth = int_from_bytes(data[HDPrivateKey.DepthStart : HDPrivateKey.DepthEnd])
index = int_from_bytes(data[HDPrivateKey.ChildIndexStart : HDPrivateKey.ChildIndexEnd])
parent = int_from_bytes(data[HDPrivateKey.ParentFingerPrintStart : HDPrivateKey.ParentFingerPrintEnd])
# The version field is used to deduce the network:
version = int_from_bytes(data[HDPrivateKey.VersionStart:HDPrivateKey.VersionEnd])
network = networks.find(version, 'hd_private_key')
privkey = PrivateKey.from_bytes(data[HDPrivateKey.PrivateKeyStart : HDPrivateKey.PrivateKeyEnd], network)
return HDPrivateKey(privkey, chain, depth, index, parent, network)
def from_string(b58_str):
data = utils.encoding.a2b_hashed_base58(b58_str) # TODO checksum?
chain = data[HDPrivateKey.ChainCodeStart:HDPrivateKey.ChainCodeEnd]
depth = int_from_bytes(
data[HDPrivateKey.DepthStart:HDPrivateKey.DepthEnd])
index = int_from_bytes(
data[HDPrivateKey.ChildIndexStart:HDPrivateKey.ChildIndexEnd])
parent = int_from_bytes(
data[HDPrivateKey.ParentFingerPrintStart:HDPrivateKey.
ParentFingerPrintEnd])
# The version field is used to deduce the network:
version = int_from_bytes(
data[HDPrivateKey.VersionStart:HDPrivateKey.VersionEnd])
network = Network.get_by_field('hd_private_key', version)
privkey = PrivateKey.from_bytes(
data[HDPrivateKey.PrivateKeyStart:HDPrivateKey.PrivateKeyEnd],
network)
return HDPrivateKey(privkey, chain, depth, index, parent, network)