mirror of https://github.com/google/oss-fuzz.git
69 lines
1.8 KiB
Python
69 lines
1.8 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 atheris
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import sys
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with atheris.instrument_imports():
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from Crypto.Cipher import AES
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@atheris.instrument_func
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def TestOneInput(data):
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if len(data) < 40:
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return
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fdp = atheris.FuzzedDataProvider(data)
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key = fdp.ConsumeBytes(16)
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IV = fdp.ConsumeBytes(16)
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enc_data = fdp.ConsumeBytes(atheris.ALL_REMAINING)
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# All modes: https://github.com/pycrypto/pycrypto/blob/7acba5f3a6ff10f1424c309d0d34d2b713233019/lib/Crypto/Cipher/AES.py#L183
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# minus CTR, ECB, PGP (not supported)
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modes = [
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AES.MODE_CBC,
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AES.MODE_CFB,
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AES.MODE_OFB,
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AES.MODE_OPENPGP,
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AES.MODE_CCM,
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AES.MODE_EAX,
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AES.MODE_SIV,
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AES.MODE_GCM
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]
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for mode in modes:
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try:
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obj = AES.new(key, mode, IV)
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except ValueError as e:
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if not (
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"Key cannot be the null string" in str(e) or
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"Length of parameter" in str(e)
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):
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raise e
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return
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try:
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ciphertext = obj.encrypt(enc_data)
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except ValueError as e:
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if not "Input strings must be a multiple of 16 in length" in str(e):
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raise e
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def main():
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atheris.instrument_all()
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atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True)
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atheris.Fuzz()
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if __name__ == "__main__":
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main()
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