mirror of https://github.com/google/oss-fuzz.git
57 lines
1.7 KiB
Python
57 lines
1.7 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 atheris
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with atheris.instrument_imports():
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import cryptography.hazmat.primitives.ciphers.aead as aead
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def TestInput(input_bytes):
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if len(input_bytes) < 12:
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return
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fdp = atheris.FuzzedDataProvider(input_bytes)
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choice = fdp.ConsumeIntInRange(1,4)
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if choice == 1:
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cipher = aead.ChaCha20Poly1305(aead.ChaCha20Poly1305.generate_key())
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if choice == 2:
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cipher = aead.AESGCM(aead.AESGCM.generate_key(bit_length=128))
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if choice == 3:
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cipher = aead.AESOCB3(aead.AESOCB3.generate_key(bit_length=128))
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if choice == 4:
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cipher = aead.AESCCM(aead.AESCCM.generate_key(bit_length=128))
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msg = fdp.ConsumeBytes(32)
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authentext = fdp.ConsumeBytes(32)
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nonce = fdp.ConsumeBytes(12)
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if len(nonce) < 12:
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return
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ciphertext = cipher.encrypt(nonce, msg, authentext)
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plaintext = cipher.decrypt(nonce, ciphertext, authentext)
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assert (plaintext == msg), "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.instrument_all()
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atheris.Fuzz()
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if __name__ == "__main__":
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main()
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