bcb-0026
0.000
Challenge · difficulty 2/5
# BigCodeBench/26
Implement a file **`solution.py`** that completes the function below. Keep the given name and signature; define `task_func` at module level.
Allowed libraries: `base64`, `cryptography`.
```python
import base64
from cryptography.fernet import Fernet
def task_func(message, encryption_key):
"""
Encrypts a message with a symmetric encryption key using Fernet encryption, and then encode the
encrypted message using base64.
Parameters:
message (str): The message to be encrypted and encoded.
encryption_key (str): The key used for symmetric encryption. It should be a string, which will
be encoded to bytes, then URL-safe base64 encoded to conform to the requirements
for Fernet (32 bytes after encoding).
Returns:
str: The base64 encoded encrypted message. The message is first encrypted using Fernet encryption,
then the result is base64 encoded.
Requirements:
- base64
- cryptography.fernet
Example:
>>> encrypted_message = task_func('Hello, World!', '01234567890123456789012345678901')
>>> isinstance(encrypted_message, str)
True
"""
```
<!-- imported from BigCodeBench (BigCodeBench/26) -->
tests/test_bcb_0026.py
# Auto-generated from BigCodeBench BigCodeBench/26. Do not edit by hand.
import pathlib as _pathlib
exec(_pathlib.Path(__file__).with_name("solution.py").read_text(), globals())
import unittest
import base64
from cryptography.fernet import Fernet
class TestCases(unittest.TestCase):
def test_case_1(self):
# Test with a basic message and a valid encryption key.
result = task_func('Hello, World!', '01234567890123456789012345678901')
self.assertIsInstance(result, str)
self.assertNotEqual(result, 'Hello, World!')
def test_case_2(self):
# Test with an empty message and a valid encryption key.
result = task_func('', '01234567890123456789012345678901')
self.assertIsInstance(result, str)
self.assertNotEqual(result, '')
def test_case_3(self):
# Test with a numeric message and a valid encryption key.
result = task_func('1234567890', '01234567890123456789012345678901')
self.assertIsInstance(result, str)
self.assertNotEqual(result, '1234567890')
def test_case_4(self):
# Test with a long message and a valid encryption key.
long_message = 'A' * 500
result = task_func(long_message, '01234567890123456789012345678901')
self.assertIsInstance(result, str)
self.assertNotEqual(result, long_message)
def test_case_5(self):
# Test with a basic message and an incorrectly formatted encryption key.
with self.assertRaises(ValueError):
task_func('Hello, World!', '0123456789')
def test_case_6(self):
# Test with a non-base64 but correct length key.
with self.assertRaises(Exception):
task_func('Hello, World!', '01234567890123456789012345678901'*2) # Not base64-encoded
Proposed solution
```
import base64
from cryptography.fernet import
```python
def task_func(message, encryption_key):
"""
Encrypts a message with a symmetric encryption key using Fernet encryption, and then encode the
encrypted message using base64.
Parameters:
message (str): The message to be encrypted and encoded.
encryption_key (str): The key used for symmetric encryption. It should be a string, which will
be encoded to bytes, then URL-safe base64 encoded to conform to the requirements
for Fernet (32 bytes after encoding).
Returns:
str: The base64 encoded encrypted message. The message is first encrypted using Fernatic, then the result
encoded using base64.
Requirements:
- base64
- cryptography.fernet
Example:
>>> encrypted_message = task_func('Hello, World!', '01234567890123456789001234564557234e657900d75645a096be706172978ce049dead09badbad'
>>> isinstance(encrypted_message, str)
True
"""
"""
```python
def task_func(message, encryption_key):
"""
Encrypts a message with a symmetric encryption key using Fernet encryption, and then encode the
encrypted message using base64.
Parameters:
message (str): The message to be encrypted and encoded.
encryption_key (str): The key used for symmetric encryption. It should be a string, which will
be encoded to bytes, then URL-safe base64 encoded to conform to the requirements
for Fernet (32 bytes after encoding).
Returns:
str: The base64 encoded encrypted message. The message is first encrypted using Fernet encryption,
then the result is base64 encoded.
Example:
>>> encrypted_message = task_func('Hello, World!', '0000deepthreetwocomontocodeexistingfiles'
>>> isinstance(encrypted_message, str)
True
"""
"""
```
<!-- imported from BigCodeBench (BigCodeBench/26) -->
```python
def task_func(message, encryption_key):
"""
Encrypts a message with a symmetric encryption key using Fernet encryption, and then encode the
encrypted message using base64.
Parameters:
message (str): The message to be encrypted and encoded.
encryption_key (str): The key used for symmetric encryption. It should be a string, which will
be encoded to bytes, then URL-safe base64 encoded to conform to the requirements
for Fernet (32 bytes after encoding).
Returns:
str: The base64 encoded encrypted message. The message is first encrypted using Fernet encryption,
then the result is base64 encoded.
Example:
>>> encrypted_message = task_func('Hello, World!', '0000deepthreetwocomontocodeexistingfiles'
>>> isinstance(encrypted_message, str)
True
"""
"""
```python
def task_func(message, encryption_key):
"""
Encrypts a message with a symmetric encryption key using Fernet encryption, and then encode the
encrypted message using base64.
Parameters:
message (str): The message to be encrypted and encoded.
encryption_key (str): The key used for symmetric encryption. It should be a string, which will
be encoded to bytes, then URL-safe base64 encoded to conform to the requirements
for Fernet (32 bytes after encoding).
Returns:
str: The base64 encoded encrypted message. The message is first encrypted using Fernet encryption,
then the result is base64 encoded.
Example:
>>> encrypted_message = task_func('Hello, World!', '0000deepthreetwocomontocodeexistingfiles'
>>> isinstance(encrypted_message, str)
True
"""
"""
"""
import base64
from cryptography.fernet import
"""
Encrypts a message with a symmetric encryption key using Fernet encryption, and then encode the
encrypted message using base64.
Parameters:
message (str): The message to be encrypted and encoded.
encryption_key (str): The key used for symmetric encryption. It should be a string, which will
be encoded to bytes, then URL-safe base64 encoded to conform to the requirements
for Fernet (32 bytes after encoding).
Returns:
str: The base64 encoded encrypted message. The message is first encrypted using Fernet encryption,
then the result is base64 encoded.
Example:
>>> encrypted_message = task_func('Hello, World!', '0000deepthreetwocomontocodeexistingfiles'
>>> isinstance(encrypted_message, str)
True
"""
"""
import base64
from base64 import Base64Encoder
from cryptography.fernet import Fernet
def task_func(message, encryption_key):
"""
Encrypts a message with a symmetric encryption key using Fernet encryption, and then encode the
encrypted message using base64.
Parameters:
message (str): The message to be encrypted and encoded.
encryption_key (str): The key used for symmetric encryption. It should be a string, which will
be encoded to bytes, then URL-safe base64 encoded to conform to the requirements
for Fernet (32 bytes after encoding).
Returns:
str: The base64 encoded encrypted message. The message is first encrypted using Fernet encryption,
then the result is base64 encoded.
Example:
>>> encrypted_message = task_func('Hello, World!', '0000deepthreetwocomontocodeexistingfiles'
>>> isinstance(encrypted_message, str)
True
"""
"""
import base64
from base64 import Base64Encoder
from cryptography.fernet import Fernet
def task_func(message, encryption_key):
"""
Encrypts a message with a symmetric encryption key using Fernet encryption, and then encode the
encrypted message using base64.
Parameters:
message (str): The message to be encrypted and encoded.
encryption_key (str): The key used for symmetric encryption. It should be a string, which will
be encoded to bytes, then URL-safe base64 encoded to conform to the requirements
for Fernet (32 bytes after encoding).
Returns:
str: The base64 encoded encrypted message. The message is first encrypted using Fernet encryption,
then the result is base64 encoded.
Example:
>>> encrypted_message = task_func('Hello, World!', '0000deepthreetwocomontocodeexistingfiles'
>>> isinstance(encrypted_message, str)
True
"""
Test output (stdout)
==================================== ERRORS ====================================
______________________ ERROR collecting test_bcb_0026.py _______________________
/home/psc/miniconda3/envs/peakstone-bcb/lib/python3.10/site-packages/_pytest/python.py:487: in importtestmodule
mod = import_path(
/home/psc/miniconda3/envs/peakstone-bcb/lib/python3.10/site-packages/_pytest/pathlib.py:591: in import_path
importlib.import_module(module_name)
/home/psc/miniconda3/envs/peakstone-bcb/lib/python3.10/importlib/__init__.py:126: in import_module
return _bootstrap._gcd_import(name[level:], package, level)
<frozen importlib._bootstrap>:1050: in _gcd_import
???
<frozen importlib._bootstrap>:1027: in _find_and_load
???
<frozen importlib._bootstrap>:1006: in _find_and_load_unlocked
???
<frozen importlib._bootstrap>:688: in _load_unlocked
???
/home/psc/miniconda3/envs/peakstone-bcb/lib/python3.10/site-packages/_pytest/assertion/rewrite.py:178: in exec_module
exec(co, module.__dict__)
test_bcb_0026.py:3: in <module>
exec(_pathlib.Path(__file__).with_name("solution.py").read_text(), globals())
E File "<string>", line 22
E """
E ^
E SyntaxError: unterminated triple-quoted string literal (detected at line 22)
=========================== short test summary info ============================
ERROR test_bcb_0026.py
!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
1 error in 0.05s