mirror of https://github.com/google/oss-fuzz.git
52 lines
1.6 KiB
Python
52 lines
1.6 KiB
Python
#!/usr/bin/python3
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# Copyright 2022 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import sys
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import base64
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import atheris
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with atheris.instrument_imports():
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from cryptography.fernet import Fernet
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from cryptography.hazmat.primitives import hashes
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from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC
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def TestInput(input_bytes):
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fdp = atheris.FuzzedDataProvider(input_bytes)
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plaintext = fdp.ConsumeBytes(32)
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key = Fernet(Fernet.generate_key())
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token = key.encrypt(plaintext)
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text = key.decrypt(token)
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assert (plaintext == text), "Encryption/Decrption error!"
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password = fdp.ConsumeBytes(8)
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salt = fdp.ConsumeBytes(16)
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kdf = PBKDF2HMAC(
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algorithm=hashes.SHA256(),
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length=32,
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salt=salt,
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iterations=1,
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)
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key = Fernet(base64.urlsafe_b64encode(kdf.derive(password)))
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token = key.encrypt(plaintext)
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text = key.decrypt(token)
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assert (plaintext == text), "Encryption/Decrption error!"
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def main():
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atheris.Setup(sys.argv, TestInput, enable_python_coverage=False)
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atheris.Fuzz()
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if __name__ == "__main__":
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main()
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