def get_result(result):
try:
verify_key = nacl.signing.VerifyKey(node_to_ask.pubkey)
verify_key.verify(result[1][0], result[1][1])
ratings = json.loads(result[1][0].decode("zlib"), object_pairs_hook=OrderedDict)
ret = []
for rating in ratings:
address = rating["tx_summary"]["address"]
buyer_key = rating["tx_summary"]["buyer_key"]
amount = rating["tx_summary"]["amount"]
listing_hash = rating["tx_summary"]["listing"]
proof_sig = rating["tx_summary"]["proof_of_tx"]
try:
verify_key.verify(str(address) + str(amount) + str(listing_hash) + str(buyer_key),
base64.b64decode(proof_sig))
valid = bitcointools.ecdsa_raw_verify(json.dumps(rating["tx_summary"], indent=4),
bitcointools.decode_sig(rating["signature"]),
buyer_key)
if not valid:
raise Exception("Bitcoin signature not valid")
ret.append(rating)
except Exception:
pass
return ret
except Exception:
import traceback
traceback.print_exc()
return None
def get_result(result):
try:
if result[0] and digest(result[1][0]) == contract_hash:
contract = json.loads(result[1][0], object_pairs_hook=OrderedDict)
# TODO: verify the guid in the contract matches this node's guid
signature = contract["vendor_offer"]["signatures"]["guid"]
pubkey = node_to_ask.signed_pubkey[64:]
verify_obj = json.dumps(contract["vendor_offer"]["listing"], indent=4)
verify_key = nacl.signing.VerifyKey(pubkey)
verify_key.verify(verify_obj, base64.b64decode(signature))
bitcoin_key = contract["vendor_offer"]["listing"]["id"]["pubkeys"]["bitcoin"]
bitcoin_sig = contract["vendor_offer"]["signatures"]["bitcoin"]
valid = bitcointools.ecdsa_raw_verify(verify_obj, bitcointools.decode_sig(bitcoin_sig),
bitcoin_key)
if not valid:
raise Exception("Invalid Bitcoin signature")
if "moderators" in contract["vendor_offer"]["listing"]:
for moderator in contract["vendor_offer"]["listing"]["moderators"]:
guid = moderator["guid"]
guid_key = moderator["pubkeys"]["signing"]["key"]
guid_sig = base64.b64decode(moderator["pubkeys"]["signing"]["signature"])
enc_key = moderator["pubkeys"]["encryption"]["key"]
enc_sig = base64.b64decode(moderator["pubkeys"]["encryption"]["signature"])
bitcoin_key = moderator["pubkeys"]["bitcoin"]["key"]
bitcoin_sig = base64.b64decode(moderator["pubkeys"]["bitcoin"]["signature"])
h = nacl.hash.sha512(guid_sig + unhexlify(guid_key))
pow_hash = h[64:128]
if int(pow_hash[:6], 16) >= 50 or guid != h[:40]:
raise Exception('Invalid GUID')
verify_key = nacl.signing.VerifyKey(guid_key, encoder=nacl.encoding.HexEncoder)
verify_key.verify(unhexlify(guid_key), guid_sig)
verify_key.verify(unhexlify(enc_key), enc_sig)
verify_key.verify(unhexlify(bitcoin_key), bitcoin_sig)
#TODO: should probably also validate the handle here.
self.cache(result[1][0])
if "image_hashes" in contract["vendor_offer"]["listing"]["item"]:
for image_hash in contract["vendor_offer"]["listing"]["item"]["image_hashes"]:
self.get_image(node_to_ask, unhexlify(image_hash))
return contract
else:
return None
except Exception:
return None
def get_result(result):
try:
if result[0] and digest(result[1][0]) == contract_hash:
contract = json.loads(result[1][0], object_pairs_hook=OrderedDict)
# TODO: verify the guid in the contract matches this node's guid
signature = contract["vendor_offer"]["signatures"]["guid"]
pubkey = node_to_ask.signed_pubkey[64:]
verify_obj = json.dumps(contract["vendor_offer"]["listing"], indent=4)
verify_key = nacl.signing.VerifyKey(pubkey)
verify_key.verify(verify_obj, base64.b64decode(signature))
bitcoin_key = contract["vendor_offer"]["listing"]["id"]["pubkeys"]["bitcoin"]
bitcoin_sig = contract["vendor_offer"]["signatures"]["bitcoin"]
valid = bitcoin.ecdsa_raw_verify(verify_obj, bitcoin.decode_sig(bitcoin_sig), bitcoin_key)
if not valid:
raise Exception("Invalid Bitcoin signature")
if "moderators" in contract["vendor_offer"]["listing"]:
for moderator in contract["vendor_offer"]["listing"]["moderators"]:
guid = moderator["guid"]
guid_key = moderator["pubkeys"]["signing"]["key"]
guid_sig = base64.b64decode(moderator["pubkeys"]["signing"]["signature"])
enc_key = moderator["pubkeys"]["encryption"]["key"]
enc_sig = base64.b64decode(moderator["pubkeys"]["encryption"]["signature"])
bitcoin_key = moderator["pubkeys"]["bitcoin"]["key"]
bitcoin_sig = base64.b64decode(moderator["pubkeys"]["bitcoin"]["signature"])
h = nacl.hash.sha512(guid_sig + unhexlify(guid_key))
pow_hash = h[64:128]
if int(pow_hash[:6], 16) >= 50 or guid != h[:40]:
raise Exception('Invalid GUID')
verify_key = nacl.signing.VerifyKey(guid_key, encoder=nacl.encoding.HexEncoder)
verify_key.verify(unhexlify(guid_key), guid_sig)
verify_key.verify(unhexlify(enc_key), enc_sig)
verify_key.verify(unhexlify(bitcoin_key), bitcoin_sig)
#TODO: should probably also validate the handle here.
self.cache(result[1][0])
if "image_hashes" in contract["vendor_offer"]["listing"]["item"]:
for image_hash in contract["vendor_offer"]["listing"]["item"]["image_hashes"]:
self.get_image(node_to_ask, unhexlify(image_hash))
return contract
else:
return None
except Exception:
return None
