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crypto.pw_decode: fix one case of raising incorrect exception

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SomberNight 2020-04-08 12:49:50 +02:00
parent 789b78cab5
commit 1ea89af012
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2 changed files with 9 additions and 1 deletions
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3
electrum/crypto.py
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@ -229,7 +229,10 @@ def pw_decode(data: str, password: Union[bytes, str, None], *, version: int) ->
if password is None:
return data
plaintext_bytes = pw_decode_bytes(data, password, version=version)
try:
plaintext_str = to_string(plaintext_bytes, "utf8")
except UnicodeDecodeError as e:
raise InvalidPassword() from e
return plaintext_str

5
electrum/tests/test_bitcoin.py
View file

@ -254,6 +254,11 @@ class Test_bitcoin(ElectrumTestCase):
enc = crypto.pw_encode(payload, password, version=version)
with self.assertRaises(InvalidPassword):
crypto.pw_decode(enc, wrong_password, version=version)
# sometimes the PKCS7 padding gets removed cleanly,
# but then UnicodeDecodeError gets raised (internally):
enc = 'smJ7j6ccr8LnMOlx98s/ajgikv9s3R1PQuG3GyyIMmo='
with self.assertRaises(InvalidPassword):
crypto.pw_decode(enc, wrong_password, version=1)
@needs_test_with_all_chacha20_implementations
def test_chacha20_poly1305_encrypt(self):