def ecdsa_sign(node: bip32.HDNode, digest: bytes) -> bytes:
sig = secp256k1.sign(node.private_key(), digest)
sigder = der.encode_seq((sig[1:33], sig[33:65]))
return sigder
def _get_public_key(node: bip32.HDNode) -> Tuple[str, bytes]:
seckey = node.private_key()
public_key = secp256k1.publickey(seckey, True)
wif = public_key_to_wif(public_key)
return wif, public_key
def bip340_sign(node: bip32.HDNode, digest: bytes) -> bytes:
internal_private_key = node.private_key()
output_private_key = bip340.tweak_secret_key(internal_private_key)
return bip340.sign(output_private_key, digest)