-
Notifications
You must be signed in to change notification settings - Fork 3.4k
/
test_encryption.py
532 lines (430 loc) · 19.8 KB
/
test_encryption.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
import pytest
from datetime import timedelta
import pyarrow as pa
try:
import pyarrow.parquet as pq
import pyarrow.parquet.encryption as pe
except ImportError:
pq = None
pe = None
else:
from pyarrow.tests.parquet.encryption import (
InMemoryKmsClient, verify_file_encrypted)
PARQUET_NAME = 'encrypted_table.in_mem.parquet'
FOOTER_KEY = b"0123456789112345"
FOOTER_KEY_NAME = "footer_key"
COL_KEY = b"1234567890123450"
COL_KEY_NAME = "col_key"
# Marks all of the tests in this module
# Ignore these with pytest ... -m 'not parquet_encryption'
# Ignore these with pytest ... -m 'not parquet'
pytestmark = [
pytest.mark.parquet_encryption,
pytest.mark.parquet
]
@pytest.fixture(scope='module')
def data_table():
data_table = pa.Table.from_pydict({
'a': pa.array([1, 2, 3]),
'b': pa.array(['a', 'b', 'c']),
'c': pa.array(['x', 'y', 'z'])
})
return data_table
@pytest.fixture(scope='module')
def basic_encryption_config():
basic_encryption_config = pe.EncryptionConfiguration(
footer_key=FOOTER_KEY_NAME,
column_keys={
COL_KEY_NAME: ["a", "b"],
})
return basic_encryption_config
def test_encrypted_parquet_write_read(tempdir, data_table):
"""Write an encrypted parquet, verify it's encrypted, and then read it."""
path = tempdir / PARQUET_NAME
# Encrypt the footer with the footer key,
# encrypt column `a` and column `b` with another key,
# keep `c` plaintext
encryption_config = pe.EncryptionConfiguration(
footer_key=FOOTER_KEY_NAME,
column_keys={
COL_KEY_NAME: ["a", "b"],
},
encryption_algorithm="AES_GCM_V1",
cache_lifetime=timedelta(minutes=5.0),
data_key_length_bits=256)
kms_connection_config = pe.KmsConnectionConfig(
custom_kms_conf={
FOOTER_KEY_NAME: FOOTER_KEY.decode("UTF-8"),
COL_KEY_NAME: COL_KEY.decode("UTF-8"),
}
)
def kms_factory(kms_connection_configuration):
return InMemoryKmsClient(kms_connection_configuration)
crypto_factory = pe.CryptoFactory(kms_factory)
# Write with encryption properties
write_encrypted_parquet(path, data_table, encryption_config,
kms_connection_config, crypto_factory)
verify_file_encrypted(path)
# Read with decryption properties
decryption_config = pe.DecryptionConfiguration(
cache_lifetime=timedelta(minutes=5.0))
result_table = read_encrypted_parquet(
path, decryption_config, kms_connection_config, crypto_factory)
assert data_table.equals(result_table)
def write_encrypted_parquet(path, table, encryption_config,
kms_connection_config, crypto_factory):
file_encryption_properties = crypto_factory.file_encryption_properties(
kms_connection_config, encryption_config)
assert file_encryption_properties is not None
with pq.ParquetWriter(
path, table.schema,
encryption_properties=file_encryption_properties) as writer:
writer.write_table(table)
def read_encrypted_parquet(path, decryption_config,
kms_connection_config, crypto_factory):
file_decryption_properties = crypto_factory.file_decryption_properties(
kms_connection_config, decryption_config)
assert file_decryption_properties is not None
meta = pq.read_metadata(
path, decryption_properties=file_decryption_properties)
assert meta.num_columns == 3
schema = pq.read_schema(
path, decryption_properties=file_decryption_properties)
assert len(schema.names) == 3
result = pq.ParquetFile(
path, decryption_properties=file_decryption_properties)
return result.read(use_threads=True)
def test_encrypted_parquet_write_read_wrong_key(tempdir, data_table):
"""Write an encrypted parquet, verify it's encrypted,
and then read it using wrong keys."""
path = tempdir / PARQUET_NAME
# Encrypt the footer with the footer key,
# encrypt column `a` and column `b` with another key,
# keep `c` plaintext
encryption_config = pe.EncryptionConfiguration(
footer_key=FOOTER_KEY_NAME,
column_keys={
COL_KEY_NAME: ["a", "b"],
},
encryption_algorithm="AES_GCM_V1",
cache_lifetime=timedelta(minutes=5.0),
data_key_length_bits=256)
kms_connection_config = pe.KmsConnectionConfig(
custom_kms_conf={
FOOTER_KEY_NAME: FOOTER_KEY.decode("UTF-8"),
COL_KEY_NAME: COL_KEY.decode("UTF-8"),
}
)
def kms_factory(kms_connection_configuration):
return InMemoryKmsClient(kms_connection_configuration)
crypto_factory = pe.CryptoFactory(kms_factory)
# Write with encryption properties
write_encrypted_parquet(path, data_table, encryption_config,
kms_connection_config, crypto_factory)
verify_file_encrypted(path)
# Read with decryption properties
wrong_kms_connection_config = pe.KmsConnectionConfig(
custom_kms_conf={
# Wrong keys - mixup in names
FOOTER_KEY_NAME: COL_KEY.decode("UTF-8"),
COL_KEY_NAME: FOOTER_KEY.decode("UTF-8"),
}
)
decryption_config = pe.DecryptionConfiguration(
cache_lifetime=timedelta(minutes=5.0))
with pytest.raises(ValueError, match=r"Incorrect master key used"):
read_encrypted_parquet(
path, decryption_config, wrong_kms_connection_config,
crypto_factory)
def test_encrypted_parquet_read_no_decryption_config(tempdir, data_table):
"""Write an encrypted parquet, verify it's encrypted,
but then try to read it without decryption properties."""
test_encrypted_parquet_write_read(tempdir, data_table)
# Read without decryption properties
with pytest.raises(IOError, match=r"no decryption"):
pq.ParquetFile(tempdir / PARQUET_NAME).read()
def test_encrypted_parquet_read_metadata_no_decryption_config(
tempdir, data_table):
"""Write an encrypted parquet, verify it's encrypted,
but then try to read its metadata without decryption properties."""
test_encrypted_parquet_write_read(tempdir, data_table)
# Read metadata without decryption properties
with pytest.raises(IOError, match=r"no decryption"):
pq.read_metadata(tempdir / PARQUET_NAME)
def test_encrypted_parquet_read_schema_no_decryption_config(
tempdir, data_table):
"""Write an encrypted parquet, verify it's encrypted,
but then try to read its schema without decryption properties."""
test_encrypted_parquet_write_read(tempdir, data_table)
with pytest.raises(IOError, match=r"no decryption"):
pq.read_schema(tempdir / PARQUET_NAME)
def test_encrypted_parquet_write_no_col_key(tempdir, data_table):
"""Write an encrypted parquet, but give only footer key,
without column key."""
path = tempdir / 'encrypted_table_no_col_key.in_mem.parquet'
# Encrypt the footer with the footer key
encryption_config = pe.EncryptionConfiguration(
footer_key=FOOTER_KEY_NAME)
kms_connection_config = pe.KmsConnectionConfig(
custom_kms_conf={
FOOTER_KEY_NAME: FOOTER_KEY.decode("UTF-8"),
COL_KEY_NAME: COL_KEY.decode("UTF-8"),
}
)
def kms_factory(kms_connection_configuration):
return InMemoryKmsClient(kms_connection_configuration)
crypto_factory = pe.CryptoFactory(kms_factory)
with pytest.raises(OSError,
match="Either column_keys or uniform_encryption "
"must be set"):
# Write with encryption properties
write_encrypted_parquet(path, data_table, encryption_config,
kms_connection_config, crypto_factory)
def test_encrypted_parquet_write_kms_error(tempdir, data_table,
basic_encryption_config):
"""Write an encrypted parquet, but raise KeyError in KmsClient."""
path = tempdir / 'encrypted_table_kms_error.in_mem.parquet'
encryption_config = basic_encryption_config
# Empty master_keys_map
kms_connection_config = pe.KmsConnectionConfig()
def kms_factory(kms_connection_configuration):
# Empty master keys map will cause KeyError to be raised
# on wrap/unwrap calls
return InMemoryKmsClient(kms_connection_configuration)
crypto_factory = pe.CryptoFactory(kms_factory)
with pytest.raises(KeyError, match="footer_key"):
# Write with encryption properties
write_encrypted_parquet(path, data_table, encryption_config,
kms_connection_config, crypto_factory)
def test_encrypted_parquet_write_kms_specific_error(tempdir, data_table,
basic_encryption_config):
"""Write an encrypted parquet, but raise KeyError in KmsClient."""
path = tempdir / 'encrypted_table_kms_error.in_mem.parquet'
encryption_config = basic_encryption_config
# Empty master_keys_map
kms_connection_config = pe.KmsConnectionConfig()
class ThrowingKmsClient(pe.KmsClient):
"""A KmsClient implementation that throws exception in
wrap/unwrap calls
"""
def __init__(self, config):
"""Create an InMemoryKmsClient instance."""
pe.KmsClient.__init__(self)
self.config = config
def wrap_key(self, key_bytes, master_key_identifier):
raise ValueError("Cannot Wrap Key")
def unwrap_key(self, wrapped_key, master_key_identifier):
raise ValueError("Cannot Unwrap Key")
def kms_factory(kms_connection_configuration):
# Exception thrown in wrap/unwrap calls
return ThrowingKmsClient(kms_connection_configuration)
crypto_factory = pe.CryptoFactory(kms_factory)
with pytest.raises(ValueError, match="Cannot Wrap Key"):
# Write with encryption properties
write_encrypted_parquet(path, data_table, encryption_config,
kms_connection_config, crypto_factory)
def test_encrypted_parquet_write_kms_factory_error(tempdir, data_table,
basic_encryption_config):
"""Write an encrypted parquet, but raise ValueError in kms_factory."""
path = tempdir / 'encrypted_table_kms_factory_error.in_mem.parquet'
encryption_config = basic_encryption_config
# Empty master_keys_map
kms_connection_config = pe.KmsConnectionConfig()
def kms_factory(kms_connection_configuration):
raise ValueError('Cannot create KmsClient')
crypto_factory = pe.CryptoFactory(kms_factory)
with pytest.raises(ValueError,
match="Cannot create KmsClient"):
# Write with encryption properties
write_encrypted_parquet(path, data_table, encryption_config,
kms_connection_config, crypto_factory)
def test_encrypted_parquet_write_kms_factory_type_error(
tempdir, data_table, basic_encryption_config):
"""Write an encrypted parquet, but use wrong KMS client type
that doesn't implement KmsClient."""
path = tempdir / 'encrypted_table_kms_factory_error.in_mem.parquet'
encryption_config = basic_encryption_config
# Empty master_keys_map
kms_connection_config = pe.KmsConnectionConfig()
class WrongTypeKmsClient():
"""This is not an implementation of KmsClient.
"""
def __init__(self, config):
self.master_keys_map = config.custom_kms_conf
def wrap_key(self, key_bytes, master_key_identifier):
return None
def unwrap_key(self, wrapped_key, master_key_identifier):
return None
def kms_factory(kms_connection_configuration):
return WrongTypeKmsClient(kms_connection_configuration)
crypto_factory = pe.CryptoFactory(kms_factory)
with pytest.raises(TypeError):
# Write with encryption properties
write_encrypted_parquet(path, data_table, encryption_config,
kms_connection_config, crypto_factory)
def test_encrypted_parquet_encryption_configuration():
def validate_encryption_configuration(encryption_config):
assert FOOTER_KEY_NAME == encryption_config.footer_key
assert ["a", "b"] == encryption_config.column_keys[COL_KEY_NAME]
assert "AES_GCM_CTR_V1" == encryption_config.encryption_algorithm
assert encryption_config.plaintext_footer
assert not encryption_config.double_wrapping
assert timedelta(minutes=10.0) == encryption_config.cache_lifetime
assert not encryption_config.internal_key_material
assert 192 == encryption_config.data_key_length_bits
encryption_config = pe.EncryptionConfiguration(
footer_key=FOOTER_KEY_NAME,
column_keys={COL_KEY_NAME: ["a", "b"], },
encryption_algorithm="AES_GCM_CTR_V1",
plaintext_footer=True,
double_wrapping=False,
cache_lifetime=timedelta(minutes=10.0),
internal_key_material=False,
data_key_length_bits=192,
)
validate_encryption_configuration(encryption_config)
encryption_config_1 = pe.EncryptionConfiguration(
footer_key=FOOTER_KEY_NAME)
encryption_config_1.column_keys = {COL_KEY_NAME: ["a", "b"], }
encryption_config_1.encryption_algorithm = "AES_GCM_CTR_V1"
encryption_config_1.plaintext_footer = True
encryption_config_1.double_wrapping = False
encryption_config_1.cache_lifetime = timedelta(minutes=10.0)
encryption_config_1.internal_key_material = False
encryption_config_1.data_key_length_bits = 192
validate_encryption_configuration(encryption_config_1)
def test_encrypted_parquet_decryption_configuration():
decryption_config = pe.DecryptionConfiguration(
cache_lifetime=timedelta(minutes=10.0))
assert timedelta(minutes=10.0) == decryption_config.cache_lifetime
decryption_config_1 = pe.DecryptionConfiguration()
decryption_config_1.cache_lifetime = timedelta(minutes=10.0)
assert timedelta(minutes=10.0) == decryption_config_1.cache_lifetime
def test_encrypted_parquet_kms_configuration():
def validate_kms_connection_config(kms_connection_config):
assert "Instance1" == kms_connection_config.kms_instance_id
assert "URL1" == kms_connection_config.kms_instance_url
assert "MyToken" == kms_connection_config.key_access_token
assert ({"key1": "key_material_1", "key2": "key_material_2"} ==
kms_connection_config.custom_kms_conf)
kms_connection_config = pe.KmsConnectionConfig(
kms_instance_id="Instance1",
kms_instance_url="URL1",
key_access_token="MyToken",
custom_kms_conf={
"key1": "key_material_1",
"key2": "key_material_2",
})
validate_kms_connection_config(kms_connection_config)
kms_connection_config_1 = pe.KmsConnectionConfig()
kms_connection_config_1.kms_instance_id = "Instance1"
kms_connection_config_1.kms_instance_url = "URL1"
kms_connection_config_1.key_access_token = "MyToken"
kms_connection_config_1.custom_kms_conf = {
"key1": "key_material_1",
"key2": "key_material_2",
}
validate_kms_connection_config(kms_connection_config_1)
@pytest.mark.xfail(reason="Plaintext footer - reading plaintext column subset"
" reads encrypted columns too")
def test_encrypted_parquet_write_read_plain_footer_single_wrapping(
tempdir, data_table):
"""Write an encrypted parquet, with plaintext footer
and with single wrapping,
verify it's encrypted, and then read plaintext columns."""
path = tempdir / PARQUET_NAME
# Encrypt the footer with the footer key,
# encrypt column `a` and column `b` with another key,
# keep `c` plaintext
encryption_config = pe.EncryptionConfiguration(
footer_key=FOOTER_KEY_NAME,
column_keys={
COL_KEY_NAME: ["a", "b"],
},
plaintext_footer=True,
double_wrapping=False)
kms_connection_config = pe.KmsConnectionConfig(
custom_kms_conf={
FOOTER_KEY_NAME: FOOTER_KEY.decode("UTF-8"),
COL_KEY_NAME: COL_KEY.decode("UTF-8"),
}
)
def kms_factory(kms_connection_configuration):
return InMemoryKmsClient(kms_connection_configuration)
crypto_factory = pe.CryptoFactory(kms_factory)
# Write with encryption properties
write_encrypted_parquet(path, data_table, encryption_config,
kms_connection_config, crypto_factory)
# # Read without decryption properties only the plaintext column
# result = pq.ParquetFile(path)
# result_table = result.read(columns='c', use_threads=False)
# assert table.num_rows == result_table.num_rows
@pytest.mark.xfail(reason="External key material not supported yet")
def test_encrypted_parquet_write_external(tempdir, data_table):
"""Write an encrypted parquet, with external key
material.
Currently it's not implemented, so should throw
an exception"""
path = tempdir / PARQUET_NAME
# Encrypt the file with the footer key
encryption_config = pe.EncryptionConfiguration(
footer_key=FOOTER_KEY_NAME,
column_keys={},
internal_key_material=False)
kms_connection_config = pe.KmsConnectionConfig(
custom_kms_conf={FOOTER_KEY_NAME: FOOTER_KEY.decode("UTF-8")}
)
def kms_factory(kms_connection_configuration):
return InMemoryKmsClient(kms_connection_configuration)
crypto_factory = pe.CryptoFactory(kms_factory)
# Write with encryption properties
write_encrypted_parquet(path, data_table, encryption_config,
kms_connection_config, crypto_factory)
def test_encrypted_parquet_loop(tempdir, data_table, basic_encryption_config):
"""Write an encrypted parquet, verify it's encrypted,
and then read it multithreaded in a loop."""
path = tempdir / PARQUET_NAME
# Encrypt the footer with the footer key,
# encrypt column `a` and column `b` with another key,
# keep `c` plaintext
encryption_config = basic_encryption_config
kms_connection_config = pe.KmsConnectionConfig(
custom_kms_conf={
FOOTER_KEY_NAME: FOOTER_KEY.decode("UTF-8"),
COL_KEY_NAME: COL_KEY.decode("UTF-8"),
}
)
def kms_factory(kms_connection_configuration):
return InMemoryKmsClient(kms_connection_configuration)
crypto_factory = pe.CryptoFactory(kms_factory)
# Write with encryption properties
write_encrypted_parquet(path, data_table, encryption_config,
kms_connection_config, crypto_factory)
verify_file_encrypted(path)
decryption_config = pe.DecryptionConfiguration(
cache_lifetime=timedelta(minutes=5.0))
for i in range(50):
# Read with decryption properties
file_decryption_properties = crypto_factory.file_decryption_properties(
kms_connection_config, decryption_config)
assert file_decryption_properties is not None
result = pq.ParquetFile(
path, decryption_properties=file_decryption_properties)
result_table = result.read(use_threads=True)
assert data_table.equals(result_table)