bcb-0026
0.333
Proposed solution
```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
"""
# Convert the encryption key to bytes and then URL-safe base64 encode it
key_bytes = base64.urlsafe_b64encode(encryption_key.encode())
# Ensure the key is 32 bytes after encoding
if len(key_bytes) != 32:
raise ValueError("The encryption key must be 32 bytes after URL-safe base64 encoding.")
# Create a Fernet object with the key
fernet = Fernet(key_bytes)
# Encrypt the message
encrypted = fernet.encrypt(message.encode())
# Base64 encode the encrypted message
encoded_encrypted = base64.b64encode(encrypted).decode()
return encoded_encrypted
```Test output (stdout)
FFFF.. [100%]
=================================== FAILURES ===================================
____________________________ TestCases.test_case_1 _____________________________
self = <test_bcb_0026.TestCases testMethod=test_case_1>
def test_case_1(self):
# Test with a basic message and a valid encryption key.
> result = task_func('Hello, World!', '01234567890123456789012345678901')
test_bcb_0026.py:11:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
message = 'Hello, World!', encryption_key = '01234567890123456789012345678901'
> ???
E ValueError: The encryption key must be 32 bytes after URL-safe base64 encoding.
<string>:32: ValueError
____________________________ TestCases.test_case_2 _____________________________
self = <test_bcb_0026.TestCases testMethod=test_case_2>
def test_case_2(self):
# Test with an empty message and a valid encryption key.
> result = task_func('', '01234567890123456789012345678901')
test_bcb_0026.py:16:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
message = '', encryption_key = '01234567890123456789012345678901'
> ???
E ValueError: The encryption key must be 32 bytes after URL-safe base64 encoding.
<string>:32: ValueError
____________________________ TestCases.test_case_3 _____________________________
self = <test_bcb_0026.TestCases testMethod=test_case_3>
def test_case_3(self):
# Test with a numeric message and a valid encryption key.
> result = task_func('1234567890', '01234567890123456789012345678901')
test_bcb_0026.py:21:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
message = '1234567890', encryption_key = '01234567890123456789012345678901'
> ???
E ValueError: The encryption key must be 32 bytes after URL-safe base64 encoding.
<string>:32: ValueError
____________________________ TestCases.test_case_4 _____________________________
self = <test_bcb_0026.TestCases testMethod=test_case_4>
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')
test_bcb_0026.py:27:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
message = 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA'
encryption_key = '01234567890123456789012345678901'
> ???
E ValueError: The encryption key must be 32 bytes after URL-safe base64 encoding.
<string>:32: ValueError
=========================== short test summary info ============================
FAILED test_bcb_0026.py::TestCases::test_case_1 - ValueError: The encryption ...
FAILED test_bcb_0026.py::TestCases::test_case_2 - ValueError: The encryption ...
FAILED test_bcb_0026.py::TestCases::test_case_3 - ValueError: The encryption ...
FAILED test_bcb_0026.py::TestCases::test_case_4 - ValueError: The encryption ...
4 failed, 2 passed in 0.07s
Self-repair attempts
[
{
"total": 6,
"answer": "```python\nimport base64\nfrom cryptography.fernet import Fernet\n\ndef task_func(message, encryption_key):\n \"\"\"\n Encrypts a message with a symmetric encryption key using Fernet encryption, and then encode the \n encrypted message using base64.\n\n Parameters:\n message (str): The message to be encrypted and encoded.\n encryption_key (str): The key used for symmetric encryption. It should be a string, which will \n be encoded to bytes, then URL-safe base64 encoded to conform to the requirements \n for Fernet (32 bytes after encoding).\n\n Returns:\n str: The base64 encoded encrypted message. The message is first encrypted using Fernet encryption, \n then the result is base64 encoded.\n\n Requirements:\n - base64\n - cryptography.fernet\n\n Example:\n >>> encrypted_message = task_func('Hello, World!', '01234567890123456789012345678901')\n >>> isinstance(encrypted_message, str)\n True\n \"\"\"\n # Convert the encryption key to bytes and then URL-safe base64 encode it\n key_bytes = base64.urlsafe_b64encode(encryption_key.encode())\n # Ensure the key is 32 bytes after encoding\n if len(key_bytes) != 32:\n raise ValueError(\"The encryption key must be 32 bytes after URL-safe base64 encoding.\")\n\n # Create a Fernet object with the key\n fernet = Fernet(key_bytes)\n # Encrypt the message\n encrypted = fernet.encrypt(message.encode())\n # Base64 encode the encrypted message\n encoded_encrypted = base64.b64encode(encrypted).decode()\n return encoded_encrypted\n```",
"passed": 2,
"test_error": "ueError\n____________________________ TestCases.test_case_2 _____________________________\n\nself = <test_bcb_0026.TestCases testMethod=test_case_2>\n\n def test_case_2(self):\n # Test with an empty message and a valid encryption key.\n> result = task_func('', '01234567890123456789012345678901')\n\ntest_bcb_0026.py:16: \n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ \n\nmessage = '', encryption_key = '01234567890123456789012345678901'\n\n> ???\nE ValueError: The encryption key must be 32 bytes after URL-safe base64 encoding.\n\n<string>:32: ValueError\n____________________________ TestCases.test_case_3 _____________________________\n\nself = <test_bcb_0026.TestCases testMethod=test_case_3>\n\n def test_case_3(self):\n # Test with a numeric message and a valid encryption key.\n> result = task_func('1234567890', '01234567890123456789012345678901')\n\ntest_bcb_0026.py:21: \n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ \n\nmessage = '1234567890', encryption_key = '01234567890123456789012345678901'\n\n> ???\nE ValueError: The encryption key must be 32 bytes after URL-safe base64 encoding.\n\n<string>:32: ValueError\n____________________________ TestCases.test_case_4 _____________________________\n\nself = <test_bcb_0026.TestCases testMethod=test_case_4>\n\n def test_case_4(self):\n # Test with a long message and a valid encryption key.\n long_message = 'A' * 500\n> result = task_func(long_message, '01234567890123456789012345678901')\n\ntest_bcb_0026.py:27: \n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ \n\nmessage = 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA'\nencryption_key = '01234567890123456789012345678901'\n\n> ???\nE ValueError: The encryption key must be 32 bytes after URL-safe base64 encoding.\n\n<string>:32: ValueError\n=========================== short test summary info ============================\nFAILED test_bcb_0026.py::TestCases::test_case_1 - ValueError: The encryption ...\nFAILED test_bcb_0026.py::TestCases::test_case_2 - ValueError: The encryption ...\nFAILED test_bcb_0026.py::TestCases::test_case_3 - ValueError: The encryption ...\nFAILED test_bcb_0026.py::TestCases::test_case_4 - ValueError: The encryption ...\n4 failed, 2 passed in 0.07s"
},
{
"total": 6,
"answer": "```python\nimport base64\nfrom cryptography.fernet import Fernet\n\ndef task_func(message, encryption_key):\n \"\"\"\n Encrypts a message with a symmetric encryption key using Fernet encryption, and then encode the \n encrypted message using base64.\n\n Parameters:\n message (str): The message to be encrypted and encoded.\n encryption_key (str): The key used for symmetric encryption. It should be a string, which will \n be encoded to bytes, then URL-safe base64 encoded to conform to the requirements \n for Fernet (32 bytes after encoding).\n\n Returns:\n str: The base64 encoded encrypted message. The message is first encrypted using Fernet encryption, \n then the result is base64 encoded.\n\n Requirements:\n - base64\n - cryptography.fernet\n\n Example:\n >>> encrypted_message = task_func('Hello, World!', '01234567890123456789012345678901')\n >>> isinstance(encrypted_message, str)\n True\n \"\"\"\n # Convert the encryption key to bytes and then URL-safe base64 encode it\n key_bytes = base64.urlsafe_b64encode(encryption_key.encode())\n # Ensure the key is 32 bytes after encoding\n if len(key_bytes) != 32:\n raise ValueError(\"The encryption key must be 32 bytes after URL-safe base64 encoding.\")\n\n # Create a Fernet object with the key\n fernet = Fernet(key_bytes)\n # Encrypt the message\n encrypted = fernet.encrypt(message.encode())\n # Base64 encode the encrypted message\n encoded_encrypted = base64.b64encode(encrypted).decode()\n return encoded_encrypted\n```",
"passed": 2,
"test_error": "ueError\n____________________________ TestCases.test_case_2 _____________________________\n\nself = <test_bcb_0026.TestCases testMethod=test_case_2>\n\n def test_case_2(self):\n # Test with an empty message and a valid encryption key.\n> result = task_func('', '01234567890123456789012345678901')\n\ntest_bcb_0026.py:16: \n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ \n\nmessage = '', encryption_key = '01234567890123456789012345678901'\n\n> ???\nE ValueError: The encryption key must be 32 bytes after URL-safe base64 encoding.\n\n<string>:32: ValueError\n____________________________ TestCases.test_case_3 _____________________________\n\nself = <test_bcb_0026.TestCases testMethod=test_case_3>\n\n def test_case_3(self):\n # Test with a numeric message and a valid encryption key.\n> result = task_func('1234567890', '01234567890123456789012345678901')\n\ntest_bcb_0026.py:21: \n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ \n\nmessage = '1234567890', encryption_key = '01234567890123456789012345678901'\n\n> ???\nE ValueError: The encryption key must be 32 bytes after URL-safe base64 encoding.\n\n<string>:32: ValueError\n____________________________ TestCases.test_case_4 _____________________________\n\nself = <test_bcb_0026.TestCases testMethod=test_case_4>\n\n def test_case_4(self):\n # Test with a long message and a valid encryption key.\n long_message = 'A' * 500\n> result = task_func(long_message, '01234567890123456789012345678901')\n\ntest_bcb_0026.py:27: \n_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ \n\nmessage = 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA'\nencryption_key = '01234567890123456789012345678901'\n\n> ???\nE ValueError: The encryption key must be 32 bytes after URL-safe base64 encoding.\n\n<string>:32: ValueError\n=========================== short test summary info ============================\nFAILED test_bcb_0026.py::TestCases::test_case_1 - ValueError: The encryption ...\nFAILED test_bcb_0026.py::TestCases::test_case_2 - ValueError: The encryption ...\nFAILED test_bcb_0026.py::TestCases::test_case_3 - ValueError: The encryption ...\nFAILED test_bcb_0026.py::TestCases::test_case_4 - ValueError: The encryption ...\n4 failed, 2 passed in 0.05s"
},
{
"total": 6,
"answer": "```python\nimport base64\nfrom cryptography.fernet import Fernet\n\ndef task_func(message, encryption_key):\n \"\"\"\n Encrypts a message with a symmetric encryption key using Fernet encryption, and then encode the \n encrypted message using base64.\n\n Parameters:\n message (str): The message to be encrypted and encoded.\n encryption_key (str): The key used for symmetric encryption. It should be a string, which will \n be encoded to bytes, then URL-safe base64 encoded to conform to the requirements \n for Fernet (32 bytes after encoding).\n\n Returns:\n str: The base64 encoded encrypted message. The message is first encrypted using Fernet encryption, \n then the result is base64 encoded.\n\n Requirements:\n - base64\n - cryptography.fernet\n\n Example:\n >>> encrypted_message = task_func('Hello, World!', '01234567890123456789012345678901')\n >>> isinstance(encrypted_message, str)\n True\n \"\"\"\n # Convert the encryption key to bytes and then URL-safe base64 encode it\n key_bytes = base64.urlsafe_b64encode(encryption_key.encode())\n # Ensure the key is 32 bytes after encoding\n if len(key_bytes) != 32:\n raise ValueError(\"The encryption key must be 32 bytes after URL-safe base64 encoding.\")\n\n # Create a Fernet object with the key\n fernet = Fernet(key_bytes)\n # Encrypt the message\n encrypted = fernet.encrypt(message.encode())\n # Base64 encode the encrypted message\n encoded_encrypted = base64.b64encode(encrypted).decode()\n return encoded_encrypted\n```",
"passed": 2,
"test_error": ""
}
]System prompt
You are an expert programmer. Solve the task exactly as specified. Output your solution as fenced code blocks using the required file name(s) and the exact function/type signatures requested. Prefer correctness; do not include prose outside code unless asked.