83 lines
2.5 KiB
Python
83 lines
2.5 KiB
Python
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#!/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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import base58
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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 ..hd_common import ZCASH_MAIN_COINTYPE, hardened
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from .bip_0032 import ExtendedSecretKey
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class HrpMismatch(Exception):
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pass
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class InvalidEncoding(Exception):
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pass
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def encode(hrp, p2pkh_bytes):
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converted = convertbits(p2pkh_bytes, 8, 5)
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return bech32_encode("tex", converted, Encoding.BECH32M)
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def decode(hrp_expected, tex_addr):
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(hrp, data, encoding) = bech32_decode(tex_addr)
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if data is None or encoding != Encoding.BECH32M:
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raise InvalidEncoding("ZIP 320 addresses must be encoded using Bech32m")
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if hrp != hrp_expected:
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raise HrpMismatch("Expected: " + hrp_expected + "; got " + hrp)
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return bytes(convertbits(data, 5, 8, False))
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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 = 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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test_vectors = []
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for account in range(0, 5):
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for j in range(0, 3):
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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_external_key.child(j)
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t_index_pubkey = t_index_key.public_key()
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p2pkh_bytes = t_index_pubkey.address()
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t_addr = base58.b58encode_check(bytes([0x1c, 0xb8]) + p2pkh_bytes).decode('utf-8')
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tex_addr = encode("tex", p2pkh_bytes)
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p2pkh_bytes_decoded = decode("tex", tex_addr)
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assert p2pkh_bytes_decoded == p2pkh_bytes
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test_vectors.append({
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't_addr': t_addr,
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'p2pkh_bytes': p2pkh_bytes,
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'tex_addr': tex_addr,
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'account': account,
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'child_index': j,
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})
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render_tv(
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args,
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'transparent/zip_0320',
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(
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('t_addr', {'rust_type': '&\'static str'}),
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('p2pkh_bytes', '[u8; 20]'),
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('tex_addr', {'rust_type': '&\'static str'}),
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('account', 'u32'),
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('child_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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