def from_bytes(cls, data):
if len(data) > 33:
raise ValueError('data size must not exceed 33 bytes')
compressed = (len(data) > 32 and data[32] == 1)
self = super(CCoinKey, cls).from_bytes(data)
CKeyBase.__init__(self, None, compressed=compressed)
return self
def from_secret_bytes(cls, secret, compressed=True):
"""Create a secret key from a 32-byte secret"""
if len(secret) != 32:
raise ValueError('secret size must be exactly 32 bytes')
self = super(CCoinKey,
cls).from_bytes(secret + (b'\x01' if compressed else b''))
CKeyBase.__init__(self, None, compressed=compressed)
return self
def SignMessage(key: CKeyBase, message: 'BitcoinMessage') -> bytes:
sig, i = key.sign_compact(message.GetHash())
meta = 27 + i
if key.is_compressed():
meta += 4
return base64.b64encode(bytes([meta]) + sig)
def __init__(self, _s: str) -> None:
data = self
if len(data) > 33:
raise ValueError('data size must not exceed 33 bytes')
compressed = (len(data) > 32 and data[32] == 1)
CKeyBase.__init__(self, None, compressed=compressed)
def __init__(self, b):
CKeyBase.__init__(self, b, compressed=True)