seb2704 opened a new issue, #35919:
URL: https://github.com/apache/arrow/issues/35919
### Describe the bug, including details regarding any error messages,
version, and platform.
Hi I'm trying to encrypt and decrypt a pyarrow table with a inmemory
kmsclient. Everything works fine, but when i use the wrong key to decrypt the
data, i get a a error message that includes the original encryption key.
Here is my Code example:
```
FOOTER_KEY = b"0123456789112340"
FOOTER_KEY_NAME = "footer_key"
COL_KEY = b"0123456789112333"
COL_KEY_NAME = "col_key"
key = b'this_is_a_32_byte_key_for_AES256_CBC'
d = {'a': [1, 2], 'b': [3, 4]}
df = pd.DataFrame(data=d)
table = pa.Table.from_pandas(df)
kms_connection_config = pe.KmsConnectionConfig(
custom_kms_conf={
FOOTER_KEY_NAME: FOOTER_KEY.decode("UTF-8"),
COL_KEY_NAME: COL_KEY.decode("UTF-8"),
}
)
#b'\xe1\x02l\x81\x7f\xfcVV\x14 S]`\xb3J\xd5'
def kms_factory(kms_connection_configuration):
return InMemoryKmsClient(kms_connection_configuration)
crypto_factory = pe.CryptoFactory(kms_factory)
encryption_config = pe.EncryptionConfiguration(
footer_key=FOOTER_KEY_NAME,
column_keys={
COL_KEY_NAME : df.columns,
},
encryption_algorithm="AES_GCM_V1",
data_key_length_bits=256)
file_encryption_properties = crypto_factory.file_encryption_properties(
kms_connection_config, encryption_config)
with pq.ParquetWriter(
'test.parquet', table.schema,
encryption_properties=file_encryption_properties) as writer:
writer.write_table(table)
decryption_config = pe.DecryptionConfiguration()
FOOTER_KEY2 = b"0123456123122342"
COL_KEY2 = b"0123456789112343"
kms_connection_config2 = pe.KmsConnectionConfig(
custom_kms_conf={
FOOTER_KEY_NAME: FOOTER_KEY2.decode("UTF-8"),
COL_KEY_NAME: COL_KEY2.decode("UTF-8"),
}
)
file_decryption_properties = crypto_factory.file_decryption_properties(
kms_connection_config2, decryption_config)
result = pq.ParquetFile(
'test.parquet', decryption_properties=file_decryption_properties)
df = table.to_pandas(result.read(use_threads=True))
```
Error message:
`ValueError: ('Incorrect master key used', b'0123456789112340',
b'\xaf\xf7\x15\x073\xec/"Z\xe3 \x86H\xf6\x8cP')`
I'm using windows 10, Python 3.9 and pyarrow=12.0.0.
Am I doing something wrong? Or is this a bug?
### Component(s)
Parquet, Python
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