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# Copyright (C) The python-bitcoinlib developers
#
# This file is part of python-bitcoinlib.
#
# It is subject to the license terms in the LICENSE file found in the top-level
# directory of this distribution.
#
# No part of python-bitcoinlib, including this file, may be copied, modified,
# propagated, or distributed except according to the terms contained in the
# LICENSE file.
from bitcoin.core.serialize import *
# Py3 compatibility
import sys
from io import BytesIO
class DERSignature(ImmutableSerializable):
__slots__ = ['length', 'r', 's']
def __init__(self, r, s, length):
object.__setattr__(self, 'r', r)
object.__setattr__(self, 's', s)
object.__setattr__(self, 'length', length)
@classmethod
def stream_deserialize(cls, f):
assert ser_read(f, 1) == b"\x30"
rs = BytesSerializer.stream_deserialize(f)
f = BytesIO(rs)
assert ser_read(f, 1) == b"\x02"
r = BytesSerializer.stream_deserialize(f)
assert ser_read(f, 1) == b"\x02"
s = BytesSerializer.stream_deserialize(f)
return cls(r, s, len(r + s))
def stream_serialize(self, f):
f.write(b"\x30")
f.write(b"\x02")
BytesSerializer.stream_serialize(self.r, f)
f.write(b"\x30")
BytesSerializer.stream_serialize(self.s, f)
def __repr__(self):
return 'DERSignature(%s, %s)' % (self.r, self.s)
__all__ = (
'DERSignature',
)
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