def sign_stream_claim(self, claim, claim_address, cert_claim_id):
validate_claim_id(cert_claim_id)
if not base_decode(claim_address, 58):
raise Exception("Invalid claim address")
to_sign = "%s%s%s" % (base_decode(claim_address, 58),
claim.serialized_no_signature,
cert_claim_id.decode('hex'))
digest = self.HASHFUNC(to_sign).digest()
if not isinstance(self.private_key, ecdsa.SigningKey):
raise Exception("Not given a signing key")
sig_dict = {
"version": V_0_0_1,
"signatureType": self.CURVE_NAME,
"signature": self.private_key.sign_digest_deterministic(digest, hashfunc=self.HASHFUNC),
"certificateId": cert_claim_id.decode('hex')
}
msg = {
"version": V_0_0_1,
"stream": decode_b64_fields(claim.protobuf_dict)['stream'],
"publisherSignature": sig_dict
}
return Claim.load(msg)
def sign_stream_claim(self, claim, claim_address, cert_claim_id):
validate_claim_id(cert_claim_id)
decoded_addr = decode_address(claim_address)
to_sign = bytearray()
to_sign.extend(decoded_addr)
to_sign.extend(claim.serialized_no_signature)
to_sign.extend(binascii.unhexlify(cert_claim_id))
digest = self.HASHFUNC(to_sign).digest()
if not isinstance(self.private_key, ecdsa.SigningKey):
raise Exception("Not given a signing key")
sig_dict = {
"version":
V_0_0_1,
"signatureType":
self.CURVE_NAME,
"signature":
self.private_key.sign_digest_deterministic(digest,
hashfunc=self.HASHFUNC),
"certificateId":
binascii.unhexlify(cert_claim_id)
}
msg = {
"version": V_0_0_1,
"stream": decode_b64_fields(claim.protobuf_dict)['stream'],
"publisherSignature": sig_dict
}
return Claim.load(msg)
def certificate(self):
certificate_claim = {
VERSION: V_0_0_1,
CLAIM_TYPE: CERTIFICATE_TYPE,
CLAIM_TYPES[CERTIFICATE_TYPE]: Certificate.load_from_key_obj(self.public_key,
self.CURVE_NAME)
}
return Claim.load(certificate_claim)
def protobuf(self):
"""Claim message object"""
return Claim.load(self)