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[TESTS] Move base58 to own module to break circular dependency

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This breaks the script->key->address->script dependency cycle.
pull/764/head
Pieter Wuille 5 years ago committed by Pieter Wuille
parent f8364df250
commit c75de5da5f
4 changed files with 74 additions and 71 deletions
Show Stats Download Patch File Download Diff File

71
test/functional/test_framework/address.py
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@ -5,15 +5,13 @@
"""Encode and decode BASE58, P2PKH and P2SH addresses."""
import enum
import unittest
from .script import hash256, hash160, sha256, CScript, OP_0
from .base58 import byte_to_base58
from .script import hash160, sha256, CScript, OP_0
from .util import hex_str_to_bytes
from . import segwit_addr
from test_framework.util import assert_equal
ADDRESS_BCRT1_UNSPENDABLE = 'bcrt1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq3xueyj'
ADDRESS_BCRT1_UNSPENDABLE_DESCRIPTOR = 'addr(bcrt1qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq3xueyj)#juyq9d97'
# Coins sent to this address can be spent with a witness stack of just OP_TRUE
@ -25,52 +23,6 @@ class AddressType(enum.Enum):
p2sh_segwit = 'p2sh-segwit'
legacy = 'legacy' # P2PKH
chars = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
def byte_to_base58(b, version):
result = ''
str = b.hex()
str = chr(version).encode('latin-1').hex() + str
checksum = hash256(hex_str_to_bytes(str)).hex()
str += checksum[:8]
value = int('0x'+str,0)
while value > 0:
result = chars[value % 58] + result
value //= 58
while (str[:2] == '00'):
result = chars[0] + result
str = str[2:]
return result
def base58_to_byte(s, verify_checksum=True):
if not s:
return b''
n = 0
for c in s:
n *= 58
assert c in chars
digit = chars.index(c)
n += digit
h = '%x' % n
if len(h) % 2:
h = '0' + h
res = n.to_bytes((n.bit_length() + 7) // 8, 'big')
pad = 0
for c in s:
if c == chars[0]:
pad += 1
else:
break
res = b'\x00' * pad + res
if verify_checksum:
assert_equal(hash256(res[:-4])[:4], res[-4:])
return res[1:-4], int(res[0])
def keyhash_to_p2pkh(hash, main = False):
assert len(hash) == 20
version = 0 if main else 111
@ -128,22 +80,3 @@ def check_script(script):
if (type(script) is bytes or type(script) is CScript):
return script
assert False
class TestFrameworkScript(unittest.TestCase):
def test_base58encodedecode(self):
def check_base58(data, version):
self.assertEqual(base58_to_byte(byte_to_base58(data, version)), (data, version))
check_base58(b'\x1f\x8e\xa1p*{\xd4\x94\x1b\xca\tA\xb8R\xc4\xbb\xfe\xdb.\x05', 111)
check_base58(b':\x0b\x05\xf4\xd7\xf6l;\xa7\x00\x9fE50)l\x84\\\xc9\xcf', 111)
check_base58(b'A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 111)
check_base58(b'\0A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 111)
check_base58(b'\0\0A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 111)
check_base58(b'\0\0\0A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 111)
check_base58(b'\x1f\x8e\xa1p*{\xd4\x94\x1b\xca\tA\xb8R\xc4\xbb\xfe\xdb.\x05', 0)
check_base58(b':\x0b\x05\xf4\xd7\xf6l;\xa7\x00\x9fE50)l\x84\\\xc9\xcf', 0)
check_base58(b'A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 0)
check_base58(b'\0A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 0)
check_base58(b'\0\0A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 0)
check_base58(b'\0\0\0A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 0)

70
test/functional/test_framework/base58.py
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@ -0,0 +1,70 @@
#!/usr/bin/env python3
# Copyright (c) 2016-2020 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Encode BASE58."""
import unittest
from .messages import hash256
from .util import hex_str_to_bytes, assert_equal
chars = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
def byte_to_base58(b, version):
result = ''
str = b.hex()
str = chr(version).encode('latin-1').hex() + str
checksum = hash256(hex_str_to_bytes(str)).hex()
str += checksum[:8]
value = int('0x'+str,0)
while value > 0:
result = chars[value % 58] + result
value //= 58
while (str[:2] == '00'):
result = chars[0] + result
str = str[2:]
return result
def base58_to_byte(s, verify_checksum=True):
if not s:
return b''
n = 0
for c in s:
n *= 58
assert c in chars
digit = chars.index(c)
n += digit
h = '%x' % n
if len(h) % 2:
h = '0' + h
res = n.to_bytes((n.bit_length() + 7) // 8, 'big')
pad = 0
for c in s:
if c == chars[0]:
pad += 1
else:
break
res = b'\x00' * pad + res
if verify_checksum:
assert_equal(hash256(res[:-4])[:4], res[-4:])
return res[1:-4], int(res[0])
class TestFrameworkScript(unittest.TestCase):
def test_base58encodedecode(self):
def check_base58(data, version):
self.assertEqual(base58_to_byte(byte_to_base58(data, version)), (data, version))
check_base58(b'\x1f\x8e\xa1p*{\xd4\x94\x1b\xca\tA\xb8R\xc4\xbb\xfe\xdb.\x05', 111)
check_base58(b':\x0b\x05\xf4\xd7\xf6l;\xa7\x00\x9fE50)l\x84\\\xc9\xcf', 111)
check_base58(b'A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 111)
check_base58(b'\0A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 111)
check_base58(b'\0\0A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 111)
check_base58(b'\0\0\0A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 111)
check_base58(b'\x1f\x8e\xa1p*{\xd4\x94\x1b\xca\tA\xb8R\xc4\xbb\xfe\xdb.\x05', 0)
check_base58(b':\x0b\x05\xf4\xd7\xf6l;\xa7\x00\x9fE50)l\x84\\\xc9\xcf', 0)
check_base58(b'A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 0)
check_base58(b'\0A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 0)
check_base58(b'\0\0A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 0)
check_base58(b'\0\0\0A\xc1\xea\xf1\x11\x80%Y\xba\xd6\x1b`\xd6+\x1f\x89|c\x92\x8a', 0)

2
test/functional/test_framework/key.py
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@ -8,7 +8,7 @@ keys, and is trivially vulnerable to side channel attacks. Do not use for
anything but tests."""
import random
from .address import byte_to_base58
from .base58 import byte_to_base58
def modinv(a, n):
"""Compute the modular inverse of a modulo n

2
test/functional/test_runner.py
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@ -67,7 +67,7 @@ TEST_EXIT_PASSED = 0
TEST_EXIT_SKIPPED = 77
TEST_FRAMEWORK_MODULES = [
"address",
"base58",
"blocktools",
"script",
]

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