147 lines
5.5 KiB
Python
Executable File
147 lines
5.5 KiB
Python
Executable File
#!/usr/bin/env python3
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import sys; assert sys.version_info[0] >= 3, "Python 3 required."
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import math
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from random import Random
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import struct
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from .bech32m import bech32_encode, bech32_decode, convertbits, Encoding
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from .output import render_args, render_tv, Some
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from .rand import Rand, randbytes
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from .zc_utils import write_compact_size, parse_compact_size
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from .f4jumble import f4jumble, f4jumble_inv
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from .sapling import key_components as sapling_key_components, zip32 as sapling_zip32
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from .orchard import key_components as orchard_key_components
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from .transparent import bip_0032
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from .hd_common import ZCASH_MAIN_COINTYPE, hardened
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from .unified_encoding import encode_unified, decode_unified
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from .unified_encoding import P2PKH_ITEM, P2SH_ITEM, SAPLING_ITEM, ORCHARD_ITEM
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def main():
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args = render_args()
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rng = Random(0xabad533d)
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rand = Rand(randbytes(rng))
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seed = bytes(range(32))
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t_root_key = bip_0032.ExtendedSecretKey.master(seed)
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t_purpose_key = t_root_key.child(hardened(44))
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t_coin_key = t_purpose_key.child(hardened(ZCASH_MAIN_COINTYPE))
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s_root_key = sapling_zip32.ExtendedSpendingKey.master(seed)
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s_purpose_key = s_root_key.child(hardened(32))
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s_coin_key = s_purpose_key.child(hardened(ZCASH_MAIN_COINTYPE))
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o_root_key = orchard_key_components.ExtendedSpendingKey.master(seed)
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o_purpose_key = o_root_key.child(hardened(32))
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o_coin_key = o_purpose_key.child(hardened(ZCASH_MAIN_COINTYPE))
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test_vectors = []
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for account in range(0, 20):
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has_t_addr = rand.bool()
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if has_t_addr:
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# This randomness is only used if this UA will have a P2SH key.
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# If it will have a P2PKH key, it gets overwritten below (after
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# we've decided on the diversifier index).
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t_addr = rand.b(20)
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else:
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t_addr = None
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j = 0
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has_s_addr = rand.bool()
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if has_s_addr:
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s_account_key = s_coin_key.child(hardened(account))
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j = s_account_key.find_j(0)
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sapling_d = s_account_key.diversifier(j)
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sapling_pk_d = s_account_key.pk_d(j)
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sapling_raw_addr = sapling_d + bytes(sapling_pk_d)
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else:
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sapling_raw_addr = None
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has_o_addr = (not has_s_addr) or rand.bool()
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if has_o_addr:
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o_account_key = o_coin_key.child(hardened(account))
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orchard_fvk = orchard_key_components.FullViewingKey.from_spending_key(o_account_key)
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orchard_d = orchard_fvk.diversifier(j)
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orchard_pk_d = orchard_fvk.pk_d(j)
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orchard_raw_addr = orchard_d + bytes(orchard_pk_d)
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else:
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orchard_raw_addr = None
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is_p2pkh = rand.bool()
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if has_t_addr and is_p2pkh:
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t_account_key = t_coin_key.child(hardened(account))
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t_external_key = t_account_key.child(0)
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t_index_key = t_account_key.child(j)
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t_index_pubkey = t_index_key.public_key()
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t_addr = t_index_pubkey.address()
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# include an unknown item 1/4 of the time
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has_unknown_item = rand.bool() and rand.bool()
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# use the range reserved for experimental typecodes for unknowns
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unknown_tc = rng.randrange(0xFFFA, 0xFFFF+1)
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unknown_len = rng.randrange(32, 256)
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if has_unknown_item:
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unknown_bytes = b"".join([rand.b(unknown_len)])
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else:
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unknown_bytes = None
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receivers = [
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(ORCHARD_ITEM, orchard_raw_addr),
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(SAPLING_ITEM, sapling_raw_addr),
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(P2PKH_ITEM, t_addr if is_p2pkh else None),
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(P2SH_ITEM, None if is_p2pkh else t_addr),
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(unknown_tc, unknown_bytes),
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]
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ua = encode_unified(rng, receivers, "u")
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expected_lengths = {
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ORCHARD_ITEM: 43,
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SAPLING_ITEM: 43,
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P2PKH_ITEM: 20,
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P2SH_ITEM: 20,
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unknown_tc: unknown_len
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}
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decoded = decode_unified(ua, "u", expected_lengths)
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assert decoded.get('orchard') == orchard_raw_addr
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assert decoded.get('sapling') == sapling_raw_addr
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assert decoded.get('transparent') == t_addr
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assert decoded.get('unknown') == ((unknown_tc, unknown_bytes) if unknown_bytes else None)
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assert decoded.get('transparent') == t_addr
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test_vectors.append({
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'p2pkh_bytes': t_addr if is_p2pkh else None,
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'p2sh_bytes': None if is_p2pkh else t_addr,
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'sapling_raw_addr': sapling_raw_addr,
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'orchard_raw_addr': orchard_raw_addr,
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'unknown_typecode': unknown_tc,
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'unknown_bytes': unknown_bytes,
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'unified_addr': ua.encode(),
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'root_seed': seed,
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'account': account,
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'diversifier_index': j,
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})
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render_tv(
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args,
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'unified_address',
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(
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('p2pkh_bytes', 'Option<[u8; 20]>'),
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('p2sh_bytes', 'Option<[u8; 20]>'),
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('sapling_raw_addr', 'Option<[u8; 43]>'),
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('orchard_raw_addr', 'Option<[u8; 43]>'),
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('unknown_typecode', 'u32'),
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('unknown_bytes', {'rust_type': 'Option<Vec<u8>>', 'bitcoin_flavoured': False}),
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('unified_addr', {'rust_type': 'Vec<u8>', 'bitcoin_flavoured': False}),
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('root_seed', {'rust_type': 'Vec<u8>', 'bitcoin_flavoured': False}),
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('account', 'u32'),
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('diversifier_index', 'u32'),
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),
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test_vectors,
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)
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if __name__ == "__main__":
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main()
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