{"snippets": ["3b531f43aeb51b13e57b9b7943c0abe2ac7f4ad66cbfe578668d5ba2210223b8"]}{"snippets": ["3b531f43aeb51b13e57b9b7943c0abe2ac7f4ad66cbfe578668d5ba2210223b8"]}{"snippets": ["3b531f43aeb51b13e57b9b7943c0abe2ac7f4ad66cbfe578668d5ba2210223b8"]}{"snippets": ["3b531f43aeb51b13e57b9b7943c0abe2ac7f4ad66cbfe578668d5ba2210223b8"]}{"snippets": ["3b531f43aeb51b13e57b9b7943c0abe2ac7f4ad66cbfe578668d5ba2210223b8"]}{"snippets": ["3b531f43aeb51b13e57b9b7943c0abe2ac7f4ad66cbfe578668d5ba2210223b8"]}{"snippets": ["3b531f43aeb51b13e57b9b7943c0abe2ac7f4ad66cbfe578668d5ba2210223b8"]}{"snippets": ["3b531f43aeb51b13e57b9b7943c0abe2ac7f4ad66cbfe578668d5ba2210223b8"]}{"snippets": ["3b531f43aeb51b13e57b9b7943c0abe2ac7f4ad66cbfe578668d5ba2210223b8"]}{"functions": ["asset_update_ownership", "asset_update_functions", "asset_create", "asset_batch_create"], "snippet": "def asset_create(info, args):\n assert args['f'] == 'asset_create'\n\n tick = args['a'][0]\n assert type(tick) is str\n assert len(tick) > 0 and len(tick) < 42\n assert tick[0] in string.ascii_uppercase\n assert set(tick) <= set(string.ascii_uppercase+string.digits+'_')\n\n sender = info['sender']\n addr = handle_lookup(sender)\n owner, _ = get('asset', 'owner', None, tick)\n assert not owner\n\n put(addr, 'asset', 'owner', addr, tick)\n put(addr, 'asset', 'functions', ['asset_update_ownership', 'asset_update_functions'], tick)\n event('AssetCreated', [tick])\n\n\ndef asset_update_ownership(info, args):\n tick = args['a'][0]\n assert type(tick) is str\n assert len(tick) > 0 and len(tick) < 42\n assert tick[0] in string.ascii_uppercase\n assert set(tick) <= set(string.ascii_uppercase+string.digits+'_')\n\n assert args['f'] == 'asset_update_ownership'\n functions, _ = get('asset', 'functions', [], tick)\n assert args['f'] in functions\n\n receiver = args['a'][1]\n sender = info['sender']\n addr = handle_lookup(sender)\n owner, _ = get('asset', 'owner', None, tick)\n assert owner == addr\n\n # DO THIS to change the owner using receiver's Zentra token\n functions, _ = get('asset', 'functions', None, tick)\n assert type(functions) is list\n assert functions\n put(receiver, 'asset', 'owner', receiver, tick)\n put(receiver, 'asset', 'functions', functions, tick)\n event('AssetOwnershipUpdated', [tick, receiver])\n\ndef asset_update_functions(info, args):\n tick = args['a'][0]\n assert type(tick) is str\n assert len(tick) > 0 and len(tick) < 42\n assert tick[0] in string.ascii_uppercase\n assert set(tick) <= set(string.ascii_uppercase+string.digits+'_')\n\n assert args['f'] == 'asset_update_functions'\n functions, _ = get('asset', 'functions', [], tick)\n assert args['f'] in functions\n\n sender = info['sender']\n addr = handle_lookup(sender)\n owner, _ = get('asset', 'owner', None, tick)\n assert owner == addr\n\n functions = args['a'][1]\n assert type(functions) is list\n assert functions\n put(addr, 'asset', 'functions', functions, tick)\n event('AssetFunctionsUpdated', [tick, functions])\n\n\ndef asset_batch_create(info, args):\n assert args['f'] == 'asset_batch_create'\n\n sender = info['sender']\n addr = handle_lookup(sender)\n committee_members, _ = get('committee', 'members', [])\n committee_members = set(committee_members)\n assert addr in committee_members\n\n ticks = args['a'][0]\n assert type(ticks) is list\n for tick in ticks:\n assert type(tick) is str\n assert len(tick) > 0 and len(tick) < 42\n assert tick[0] in string.ascii_uppercase\n assert set(tick) <= set(string.ascii_uppercase+string.digits+'_')\n addr = handle_lookup(sender)\n owner, _ = get('asset', 'owner', None, tick)\n\n if not owner:\n put(addr, 'asset', 'owner', addr, tick)\n put(addr, 'asset', 'functions', ['asset_update_ownership', 'asset_update_functions'], tick)\n"}{"votes": [], "snippets": ["6ca5dd4b49af31a27123ff3ff3622d81c1778f2e47255c5442c45064b9ed5ae8"], "functions": ["asset_create", "asset_update_ownership", "asset_update_functions", "asset_batch_create"]}["asset_update_ownership", "asset_update_functions"]"0xe1288759446298f250c3bce5616706d25525ba7f""0x78141a5a8C8Ba0595DC93c6dAb3A63270d6aA8B8"797940913748321179498954721298671249725457349094951070033400900160484558896633276942593620719084540417952995985423957537276914989387908473860922136063891102892967479858736480043399243420053849865825790660069816488383892206510354143615367346420950854403671215282661073269764853318473705843343945490230958763251106137821608092837899033543352900773343833972376101943350386723783616817479111504223497063979268412701498002172819475721545833420252914962087565199776776041473363907565025197983374653346380377169299313754257295178084654259305091300776758065539885822182593851674992343714215376109246481060078340365989525218771711043326484073594139844583246858647379081564692390167973808909987073589116064212609687638660695176001486669538599472408793295719468027188979565950927923067135872718493745928792558227011342519143348481528063197774358619967782354677497646953593051465727100812345528244348513523145241172168624603384207910536284533784953181174333200276822061907920921416290000233555197880127856516230241576518071863696881506283907001061393158896170629534341300886552036005278005740906565092228613293677822405960868082842274595743030362395226438216775864140731992639798967021522764684573953071507992421977313201600644895242618728260601"USDC"59{"functions": ["asset_update_ownership", "asset_update_functions", "asset_create", "asset_batch_create"], "snippet": "def asset_create(info, args):\n assert args['f'] == 'asset_create'\n\n tick = args['a'][0]\n assert type(tick) is str\n assert len(tick) > 0 and len(tick) < 42\n assert tick[0] in string.ascii_uppercase\n assert set(tick) <= set(string.ascii_uppercase+string.digits+'_')\n\n sender = info['sender']\n addr = handle_lookup(sender)\n owner, _ = get('asset', 'owner', None, tick)\n assert not owner\n\n put(addr, 'asset', 'owner', addr, tick)\n put(addr, 'asset', 'functions', ['asset_update_ownership', 'asset_update_functions'], tick)\n event('AssetCreated', [tick])\n\n\ndef asset_update_ownership(info, args):\n tick = args['a'][0]\n assert type(tick) is str\n assert len(tick) > 0 and len(tick) < 42\n assert tick[0] in string.ascii_uppercase\n assert set(tick) <= set(string.ascii_uppercase+string.digits+'_')\n\n assert args['f'] == 'asset_update_ownership'\n functions, _ = get('asset', 'functions', [], tick)\n assert args['f'] in functions\n\n receiver = args['a'][1].lower()\n sender = info['sender']\n addr = handle_lookup(sender)\n owner, _ = get('asset', 'owner', None, tick)\n assert owner.lower() == addr\n\n # DO THIS to change the owner using receiver's Zentra token\n functions, _ = get('asset', 'functions', None, tick)\n assert type(functions) is list\n assert functions\n put(receiver, 'asset', 'owner', receiver, tick)\n put(receiver, 'asset', 'functions', functions, tick)\n event('AssetOwnershipUpdated', [tick, receiver])\n\ndef asset_update_functions(info, args):\n tick = args['a'][0]\n assert type(tick) is str\n assert len(tick) > 0 and len(tick) < 42\n assert tick[0] in string.ascii_uppercase\n assert set(tick) <= set(string.ascii_uppercase+string.digits+'_')\n\n assert args['f'] == 'asset_update_functions'\n functions, _ = get('asset', 'functions', [], tick)\n assert args['f'] in functions\n\n sender = info['sender']\n addr = handle_lookup(sender)\n owner, _ = get('asset', 'owner', None, tick)\n assert owner == addr\n\n functions = args['a'][1]\n assert type(functions) is list\n assert functions\n put(addr, 'asset', 'functions', functions, tick)\n event('AssetFunctionsUpdated', [tick, functions])\n\n\ndef asset_batch_create(info, args):\n assert args['f'] == 'asset_batch_create'\n\n sender = info['sender']\n addr = handle_lookup(sender)\n committee_members, _ = get('committee', 'members', [])\n committee_members = set(committee_members)\n assert addr in committee_members\n\n ticks = args['a'][0]\n assert type(ticks) is list\n for tick in ticks:\n assert type(tick) is str\n assert len(tick) > 0 and len(tick) < 42\n assert tick[0] in string.ascii_uppercase\n assert set(tick) <= set(string.ascii_uppercase+string.digits+'_')\n addr = handle_lookup(sender)\n owner, _ = get('asset', 'owner', None, tick)\n\n if not owner:\n put(addr, 'asset', 'owner', addr, tick)\n put(addr, 'asset', 'functions', ['asset_update_ownership', 'asset_update_functions'], tick)\n"}{"votes": [], "snippets": ["427754609975ef08e86f59023f8ef035e51b4c42df41c6a4325781f63d9fd92e"], "functions": ["asset_create", "asset_update_ownership", "asset_update_functions", 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["privacy_exit", "privacy_deposit_cancel", "privacy_withdraw_cancel", "privacy_accept", "privacy_init", "privacy_send", "privacy_decline", "privacy_withdraw", "privacy_deposit", "privacy_enter", "privacy_send_cancel"], "snippet": "# Paillier helpers + privacy transfer flow (ZIP23)\n\ndef _egcd(a, b):\n x0, y0 = 1, 0\n x1, y1 = 0, 1\n while b != 0:\n q = a // b\n a, b = b, a % b\n x0, x1 = x1, x0 - q * x1\n y0, y1 = y1, y0 - q * y1\n return a, x0, y0\n\ndef _modinv(a, n):\n g, x, _ = _egcd(a, n)\n assert g == 1\n return x % n\n\ndef _homomorphic_add(pub, c1, c2):\n n = pub\n n2 = n * n\n return (c1 * c2) % n2\n\ndef _homomorphic_sub(pub, c1, c2):\n n = pub\n n2 = n * n\n inv = _modinv(c2, n2)\n return (c1 * inv) % n2\n\n\n# Elliptic Curve parameters for secp256k1\nP = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F\nA = 0\nB = 7\nGx = 55066263022277343669578718895168534326250603453777594175500187360389116729240\nGy = 32670510020758816978083085130507043184471273380659243275938904335757337482424\nG = (Gx, Gy)\nN = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141\n\ndef _inverse_mod(k, p):\n if k == 0:\n raise\n return pow(k, p - 2, p)\n\ndef _is_on_curve(point):\n if point is None:\n return True\n x, y = point\n return (y * y - (x * x * x + A * x + B)) % P == 0\n\ndef _point_add(point1, point2):\n if point1 is None:\n return point2\n if point2 is None:\n return point1\n x1, y1 = point1\n x2, y2 = point2\n if x1 == x2 and y1 != y2:\n return None\n if x1 == x2:\n m = (3 * x1 * x1 + A) * _inverse_mod(2 * y1, P)\n else:\n m = (y2 - y1) * _inverse_mod(x2 - x1, P)\n m %= P\n x3 = (m * m - x1 - x2) % P\n y3 = (m * (x1 - x3) - y1) % P\n return (x3, y3)\n\ndef _scalar_mult(k, point):\n result = None\n addend = point\n while k:\n if k & 1:\n result = _point_add(result, addend)\n addend = _point_add(addend, addend)\n k >>= 1\n return result\n\ndef _ecdsa_verify(msg_hash_hex, signature_hex, public_key_hex):\n assert msg_hash_hex.startswith('0x')\n assert signature_hex.startswith('0x')\n assert public_key_hex.startswith('0x')\n r = int(signature_hex[2:66], 16)\n s = int(signature_hex[66:130], 16)\n if not (1 <= r < N and 1 <= s < N):\n return False\n point = (int(public_key_hex[2:66], 16), int(public_key_hex[66:], 16))\n e = int(msg_hash_hex[2:], 16)\n w = _inverse_mod(s, N)\n u1 = (e * w) % N\n u2 = (r * w) % N\n q = _point_add(_scalar_mult(u1, G), _scalar_mult(u2, point))\n if q is None:\n return False\n x, y = q\n return r == x % N\n\ndef _ecdsa_recover(msg_hash_hex, signature_hex):\n assert msg_hash_hex.startswith('0x')\n assert signature_hex.startswith('0x')\n r = int(signature_hex[2:66], 16)\n s = int(signature_hex[66:130], 16)\n z = int(msg_hash_hex[2:], 16)\n\n if len(signature_hex[2:]) == 130:\n v = int(signature_hex[130:], 16)\n if v >= 27:\n recovery_id = v - 27\n else:\n recovery_id = v\n recovery_ids = [recovery_id]\n else:\n recovery_ids = [0, 1]\n\n for recovery_id in recovery_ids:\n for j in range(2):\n x = r + j * N\n if x >= P:\n continue\n\n y_squared = (pow(x, 3, P) + A * x + B) % P\n y = pow(y_squared, (P + 1) // 4, P)\n\n if y % 2 != recovery_id:\n y = P - y\n\n point = (x, y)\n if not _is_on_curve(point):\n continue\n\n r_inv = _inverse_mod(r, N)\n u1 = (-z * r_inv) % N\n u2 = (s * r_inv) % N\n\n q = _point_add(_scalar_mult(u1, G), _scalar_mult(u2, point))\n\n if q is None:\n continue\n\n public_key_hex = f\"0x{q[0]:064x}{q[1]:064x}\"\n if _ecdsa_verify(msg_hash_hex, signature_hex, public_key_hex):\n return public_key_hex\n\n return None\n\ndef _pubkey_to_address(public_key_hex):\n public_key_bytes = bytes.fromhex(public_key_hex[2:])\n address_bytes = keccak(public_key_bytes)[-20:]\n return '0x' + address_bytes.hex()\n\ndef _message_hash(payload):\n payload_hash = keccak(text=payload)\n prefix = b\"\\x19Ethereum Signed Message:\\n32\"\n return keccak(prefix + payload_hash)\n\ndef _addr_recover(msg, signature_hex):\n if not signature_hex.startswith('0x'):\n signature_hex = '0x' + signature_hex\n msg_hash = _message_hash(msg)\n msg_hash_hex = '0x' + msg_hash.hex()\n public_key_hex = _ecdsa_recover(msg_hash_hex, signature_hex)\n if not public_key_hex:\n return False\n recovered = _pubkey_to_address(public_key_hex)\n return recovered.lower()\n\ndef _resolve_account(addr):\n addr = addr.lower()\n assert len(addr) <= 42\n if len(addr) == 42:\n assert addr.startswith('0x')\n assert set(addr[2:]) <= set(string.digits + 'abcdef')\n else:\n assert len(addr) > 4\n\n if len(addr) == 42:\n return handle_lookup(addr)\n return addr\n\ndef _check_tick(tick):\n assert type(tick) is str\n assert len(tick) > 0 and len(tick) < 42\n assert tick[0] in string.ascii_uppercase\n assert set(tick) <= set(string.ascii_uppercase + string.digits + '_')\n\n\ndef _get_pubkey(privacy_tick):\n pub, _ = get(privacy_tick, 'privacy_pub', None)\n if pub is None:\n return None\n return int(pub)\n\n\ndef privacy_init(info, args):\n assert args['f'] == 'privacy_init'\n\n tick = args['a'][0]\n _check_tick(tick)\n privacy_tick = args['a'][1]\n _check_tick(privacy_tick)\n provider_addr = args['a'][2]\n paillier_pub = int(args['a'][3])\n\n sender = info['sender']\n\n existing_provider, _ = get(privacy_tick, 'privacy_provider', None)\n if existing_provider is not None:\n return\n\n put(provider_addr, privacy_tick, 'tick', tick)\n put(provider_addr, privacy_tick, 'transaction_count', 0)\n put(provider_addr, privacy_tick, 'privacy_provider', provider_addr)\n put(provider_addr, privacy_tick, 'privacy_pub', int(paillier_pub))\n\n\ndef privacy_update(info, args):\n assert args['f'] == 'privacy_update'\n\n # TODO\n\n\ndef privacy_deposit(info, args):\n assert args['f'] == 'privacy_deposit'\n\n privacy_tick = args['a'][0]\n _check_tick(privacy_tick)\n tick, _ = get(privacy_tick, 'tick', None)\n _check_tick(tick)\n\n functions, _ = get('asset', 'functions', [], tick)\n assert args['f'] in functions\n functions, _ = get('asset', 'functions', [], privacy_tick)\n assert args['f'] in functions\n\n sender = info['sender']\n addr = handle_lookup(sender)\n\n existing_deposit, _ = get(privacy_tick, 'privacy_deposit', None, addr)\n if existing_deposit:\n return\n\n amount = int(args['a'][1])\n assert amount >= 0\n\n amount_cipher = int(args['a'][2])\n assert amount_cipher >= 0\n\n balance, _ = get(tick, 'balance', 0, f'{sender}')\n assert balance >= amount\n balance_updated = balance - amount\n put(sender, tick, 'balance', balance_updated, f'{sender}')\n\n transaction_id, privacy_tick_owner = get(privacy_tick, 'transaction_count', 0)\n transaction_id += 1\n put(privacy_tick_owner, privacy_tick, 'transaction_count', transaction_id)\n\n put(addr, privacy_tick, 'privacy_deposit', f'{str(amount)},{str(amount_cipher)},{str(transaction_id)}', f'{addr}')\n event('PrivacyDeposit', [privacy_tick, addr, amount, amount_cipher, transaction_id])\n\n\ndef privacy_deposit_cancel(info, args):\n assert args['f'] == 'privacy_deposit_cancel'\n\n privacy_tick = args['a'][0]\n _check_tick(privacy_tick)\n tick, _ = get(privacy_tick, 'tick', None)\n _check_tick(tick)\n\n functions, _ = get('asset', 'functions', [], tick)\n assert args['f'] in functions\n functions, _ = get('asset', 'functions', [], privacy_tick)\n assert args['f'] in functions\n\n sender = info['sender']\n addr = handle_lookup(sender)\n\n deposit_info, _ = get(privacy_tick, 'privacy_deposit', None, addr)\n if not deposit_info:\n return\n\n parts = deposit_info.split(',')\n assert len(parts) == 3\n amount = int(parts[0])\n amount_cipher = int(parts[1])\n transaction_id = int(parts[2])\n\n balance, _ = get(tick, 'balance', 0, sender)\n balance_updated = balance + amount\n put(sender, tick, 'balance', balance_updated, sender)\n\n put(addr, privacy_tick, 'privacy_deposit', None, addr)\n\n event('PrivacyDepositCancel', [privacy_tick, addr, amount, amount_cipher, transaction_id])\n\n\ndef privacy_enter(info, args):\n assert args['f'] == 'privacy_enter'\n\n privacy_tick = args['a'][0]\n _check_tick(privacy_tick)\n tick, _ = get(privacy_tick, 'tick', None)\n _check_tick(tick)\n\n functions, _ = get('asset', 'functions', [], privacy_tick)\n assert args['f'] in functions\n functions, _ = get('asset', 'functions', [], tick)\n assert args['f'] in functions\n\n sender = info['sender']\n transaction_id = int(args['a'][1])\n signature_hex = args['a'][2]\n\n pub = _get_pubkey(privacy_tick)\n assert pub is not None\n\n deposit_info, owner = get(privacy_tick, 'privacy_deposit', 0, f'{sender}')\n assert deposit_info is not None\n parts = deposit_info.split(',')\n assert len(parts) == 3\n amount = int(parts[0])\n amount_cipher = int(parts[1])\n tx_id = int(parts[2])\n assert tx_id == transaction_id\n put(owner, privacy_tick, 'privacy_deposit', None, f'{sender}')\n\n provider_addr, _ = get(privacy_tick, 'privacy_provider', None)\n msg_to_sign = f'{privacy_tick},privacy_deposit,{str(amount)},{str(amount_cipher)},{str(transaction_id)}'\n\n if provider_addr.lower() != _addr_recover(msg_to_sign, signature_hex):\n return\n\n balance, _ = get(tick, 'balance', 0, f'{privacy_tick}')\n assert balance >= 0\n balance_updated = balance + amount\n put(sender, tick, 'balance', balance_updated, f'{privacy_tick}')\n\n balance_cipher, _ = get(privacy_tick, 'privacy_balance', 1, f'{sender},1')\n balance_cipher_updated = _homomorphic_add(pub, int(balance_cipher), amount_cipher)\n put(sender, privacy_tick, 'privacy_balance', balance_cipher_updated, f'{sender},1')\n\n event('PrivacyEnter', [tick, sender, balance_cipher_updated])\n\n\ndef privacy_withdraw(info, args):\n assert args['f'] == 'privacy_withdraw'\n\n privacy_tick = args['a'][0]\n _check_tick(privacy_tick)\n functions, _ = get('asset', 'functions', [], privacy_tick)\n assert args['f'] in functions\n\n sender = info['sender']\n from_addr = handle_lookup(sender)\n\n existing_withdraw, _ = get(privacy_tick, 'privacy_withdraw', None, from_addr)\n if existing_withdraw:\n return\n\n # to_addr = _resolve_account(args['a'][1])\n amount = int(args['a'][1])\n amount_cipher = int(args['a'][2])\n\n pub = _get_pubkey(privacy_tick)\n assert pub is not None\n\n balance_key = f'{from_addr},1'\n balance_cipher, _ = get(privacy_tick, 'privacy_balance', 1, balance_key)\n \n balance_cipher_updated = _homomorphic_sub(pub, int(balance_cipher), amount_cipher)\n put(sender, privacy_tick, 'privacy_balance', balance_cipher_updated, balance_key)\n\n transaction_id, privacy_tick_owner = get(privacy_tick, 'transaction_count', 0)\n transaction_id += 1\n put(privacy_tick_owner, privacy_tick, 'transaction_count', transaction_id)\n\n put(sender, privacy_tick, 'privacy_withdraw', f'{str(balance_cipher)},{str(amount)},{str(amount_cipher)},{str(transaction_id)}', from_addr)\n\n event('PrivacyWithdraw', [privacy_tick, balance_cipher, amount, amount_cipher, transaction_id])\n\n\ndef privacy_withdraw_cancel(info, args):\n assert args['f'] == 'privacy_withdraw_cancel'\n\n privacy_tick = args['a'][0]\n _check_tick(privacy_tick)\n functions, _ = get('asset', 'functions', [], privacy_tick)\n assert args['f'] in functions\n\n sender = info['sender']\n from_addr = handle_lookup(sender)\n\n withdraw_info, _ = get(privacy_tick, 'privacy_withdraw', None, from_addr)\n if not withdraw_info:\n return\n\n pub = _get_pubkey(privacy_tick)\n assert pub is not None\n\n parts = withdraw_info.split(',')\n assert len(parts) == 4\n addr = parts[0]\n amount = int(parts[1])\n amount_cipher = int(parts[2])\n transaction_id = int(parts[3])\n\n balance_key = f'{from_addr},1'\n balance_cipher, _ = get(privacy_tick, 'privacy_balance', 1, balance_key)\n balance_cipher_updated = _homomorphic_add(pub, int(balance_cipher), amount_cipher)\n put(sender, privacy_tick, 'privacy_balance', balance_cipher_updated, balance_key)\n\n put(sender, privacy_tick, 'privacy_withdraw', None, from_addr)\n\n event('PrivacyWithdrawCancel', [privacy_tick, from_addr, amount, amount_cipher, transaction_id])\n\n\ndef privacy_exit(info, args):\n assert args['f'] == 'privacy_exit'\n\n privacy_tick = args['a'][0]\n _check_tick(privacy_tick)\n tick, _ = get(privacy_tick, 'tick', None)\n _check_tick(tick)\n\n functions, _ = get('asset', 'functions', [], tick)\n assert args['f'] in functions\n functions, _ = get('asset', 'functions', [], privacy_tick)\n assert args['f'] in functions\n\n sender = info['sender']\n transaction_id = int(args['a'][1])\n signature_hex = args['a'][2]\n\n withdraw_info, _ = get(privacy_tick, 'privacy_withdraw', None, sender)\n if not withdraw_info:\n return\n\n parts = withdraw_info.split(',')\n assert len(parts) == 4\n balance_cipher = parts[0]\n amount = int(parts[1])\n amount_cipher = int(parts[2])\n tx_id = int(parts[3])\n assert tx_id == transaction_id\n\n provider_addr, _ = get(privacy_tick, 'privacy_provider', None)\n msg_to_sign = f'{privacy_tick},privacy_withdraw,{str(amount)},{str(transaction_id)}'\n\n if provider_addr.lower() != _addr_recover(msg_to_sign, signature_hex):\n return\n\n pool_balance, _ = get(tick, 'balance', 0, privacy_tick)\n assert pool_balance >= amount\n put(sender, tick, 'balance', pool_balance - amount, privacy_tick)\n\n balance, _ = get(tick, 'balance', 0, sender)\n put(sender, tick, 'balance', balance + amount, sender)\n\n put(sender, privacy_tick, 'privacy_withdraw', None, sender)\n\n event('PrivacyExit', [privacy_tick, sender, amount_cipher])\n\n\ndef privacy_send(info, args):\n assert args['f'] == 'privacy_send'\n\n privacy_tick = args['a'][0]\n _check_tick(privacy_tick)\n functions, _ = get('asset', 'functions', [], privacy_tick)\n assert args['f'] in functions\n\n sender = info['sender']\n from_addr = handle_lookup(sender)\n from_subaccount = int(args['a'][1])\n assert from_subaccount > 0\n to_addr = _resolve_account(args['a'][2])\n to_subaccount = int(args['a'][3])\n assert to_subaccount > 0\n amount_cipher = int(args['a'][4])\n\n send_info, _ = get(privacy_tick, 'privacy_send', None, f'{from_addr},{str(from_subaccount)}')\n if send_info:\n return\n\n pub = _get_pubkey(privacy_tick)\n assert pub is not None\n\n balance_cipher, _ = get(privacy_tick, 'privacy_balance', from_subaccount, f'{from_addr},{str(from_subaccount)}')\n balance_cipher_updated = _homomorphic_sub(pub, int(balance_cipher), amount_cipher)\n put(sender, privacy_tick, 'privacy_balance', balance_cipher_updated, f'{from_addr},{str(from_subaccount)}')\n\n transaction_id, privacy_tick_owner = get(privacy_tick, 'transaction_count', 0)\n transaction_id += 1\n put(privacy_tick_owner, privacy_tick, 'transaction_count', transaction_id)\n put(sender, privacy_tick, 'privacy_send', f'{str(balance_cipher)},{str(amount_cipher)},{to_addr},{str(to_subaccount)},{str(transaction_id)}', f'{sender},{str(from_subaccount)}')\n\n event('PrivacySend', [privacy_tick, from_addr, from_subaccount, to_addr, to_subaccount, balance_cipher, amount_cipher, transaction_id])\n\n\ndef privacy_send_cancel(info, args):\n assert args['f'] == 'privacy_send_cancel'\n\n privacy_tick = args['a'][0]\n _check_tick(privacy_tick)\n functions, _ = get('asset', 'functions', [], privacy_tick)\n assert args['f'] in functions\n\n sender = info['sender']\n from_addr = handle_lookup(sender)\n from_subaccount = int(args['a'][1])\n assert from_subaccount > 0\n\n send_info_key = f'{from_addr},{str(from_subaccount)}'\n send_info, _ = get(privacy_tick, 'privacy_send', None, send_info_key)\n if not send_info:\n return\n\n pub = _get_pubkey(privacy_tick)\n assert pub is not None\n\n parts = send_info.split(',')\n assert len(parts) == 5\n amount_cipher = int(parts[1])\n transaction_id = int(parts[4])\n\n balance_key = f'{from_addr},{str(from_subaccount)}'\n balance_cipher, _ = get(privacy_tick, 'privacy_balance', 1, balance_key)\n balance_cipher_updated = _homomorphic_add(pub, int(balance_cipher), amount_cipher)\n put(sender, privacy_tick, 'privacy_balance', balance_cipher_updated, balance_key)\n put(sender, privacy_tick, 'privacy_send', None, send_info_key)\n\n event('PrivacySendCancel', [privacy_tick, from_addr, from_subaccount, balance_cipher_updated, amount_cipher, transaction_id])\n\n\ndef privacy_accept(info, args):\n assert args['f'] == 'privacy_accept'\n\n privacy_tick = args['a'][0]\n _check_tick(privacy_tick)\n functions, _ = get('asset', 'functions', [], privacy_tick)\n assert args['f'] in functions\n\n from_addr = _resolve_account(args['a'][1])\n from_subaccount = int(args['a'][2])\n assert from_subaccount > 0\n signature_hex = args['a'][3]\n to_subaccount = int(args['a'][4])\n sender = info['sender']\n\n send_info, _ = get(privacy_tick, 'privacy_send', None, f'{from_addr},{str(from_subaccount)}')\n if not send_info:\n return\n parts = send_info.split(',')\n assert len(parts) == 5\n # senderbalance_cipher = int(parts[0])\n amount_cipher = int(parts[1])\n to_addr = parts[2]\n to_subaccount = int(parts[3])\n transaction_id = int(parts[4])\n assert to_addr == sender\n\n pub = _get_pubkey(privacy_tick)\n assert pub is not None\n\n provider_addr, _ = get(privacy_tick, 'privacy_provider', None)\n msg_to_sign = f'{privacy_tick},privacy_send,{from_addr},{str(from_subaccount)},{str(transaction_id)}'\n if provider_addr.lower() != _addr_recover(msg_to_sign, signature_hex):\n return\n\n balance_cipher, _ = get(privacy_tick, 'privacy_balance', 1, f'{to_addr},{str(to_subaccount)}')\n balance_cipher_updated = _homomorphic_add(pub, int(balance_cipher), amount_cipher)\n put(to_addr, privacy_tick, 'privacy_balance', balance_cipher_updated, f'{to_addr},{str(to_subaccount)}')\n put(from_addr, privacy_tick, 'privacy_send', None, f'{from_addr},{str(from_subaccount)}')\n\n event('PrivacyAccept', [privacy_tick, to_subaccount, balance_cipher_updated, amount_cipher, transaction_id])\n\n\ndef privacy_decline(info, args):\n assert args['f'] == 'privacy_decline'\n\n privacy_tick = args['a'][0]\n _check_tick(privacy_tick)\n from_addr = _resolve_account(args['a'][1])\n from_subaccount = int(args['a'][2])\n assert from_subaccount > 0\n sender = info['sender']\n\n send_info, _ = get(privacy_tick, 'privacy_send', None, f'{from_addr},{str(from_subaccount)}')\n if not send_info:\n return\n parts = send_info.split(',')\n assert len(parts) == 5\n amount_cipher = int(parts[1])\n to_addr = parts[2]\n transaction_id = int(parts[4])\n assert to_addr == sender\n\n pub = _get_pubkey(privacy_tick)\n assert pub is not None\n\n balance_cipher, _ = get(privacy_tick, 'privacy_balance', 1, f'{from_addr},{str(from_subaccount)}')\n balance_cipher_updated = _homomorphic_add(pub, int(balance_cipher), amount_cipher)\n put(from_addr, privacy_tick, 'privacy_balance', balance_cipher_updated, f'{from_addr},{str(from_subaccount)}')\n put(from_addr, privacy_tick, 'privacy_send', None, f'{from_addr},{str(from_subaccount)}')\n\n event('PrivacyDecline', [privacy_tick, from_addr, from_subaccount, balance_cipher_updated, amount_cipher, transaction_id])\n\n"}{"votes": [], "snippets": ["3b531f43aeb51b13e57b9b7943c0abe2ac7f4ad66cbfe578668d5ba2210223b8"], "functions": ["privacy_init", "privacy_deposit", "privacy_deposit_cancel", "privacy_enter", "privacy_send", "privacy_send_cancel", "privacy_accept", "privacy_withdraw", "privacy_withdraw_cancel", "privacy_exit"]}{"votes": [], "snippets": ["3b531f43aeb51b13e57b9b7943c0abe2ac7f4ad66cbfe578668d5ba2210223b8"], "functions": ["privacy_init", "privacy_deposit", "privacy_deposit_cancel", "privacy_enter", "privacy_send", "privacy_send_cancel", "privacy_accept", "privacy_decline", "privacy_withdraw", "privacy_withdraw_cancel", "privacy_exit"]}{"snippets": 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