Coverage for /pythoncovmergedfiles/medio/medio/src/fuzz_private_key.py: 45%

1###### Coverage stub 

2import atexit 

3import coverage 

4cov = coverage.coverage(data_file='.coverage', cover_pylib=True) 

5cov.start() 

6# Register an exist handler that will print coverage 

7def exit_handler(): 

8 cov.stop() 

9 cov.save() 

10atexit.register(exit_handler) 

11####### End of coverage stub 

12#!/usr/bin/python3 

13# Copyright 2022 Google LLC 

14# 

15# Licensed under the Apache License, Version 2.0 (the "License"); 

16# you may not use this file except in compliance with the License. 

17# You may obtain a copy of the License at 

18# 

19# http://www.apache.org/licenses/LICENSE-2.0 

20# 

21# Unless required by applicable law or agreed to in writing, software 

22# distributed under the License is distributed on an "AS IS" BASIS, 

23# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

24# See the License for the specific language governing permissions and 

25# limitations under the License. 

26 

27import sys 

28import atheris 

29 

30with atheris.instrument_imports(): 

31 from ellipticcurve import Ecdsa, Signature, PublicKey, PrivateKey 

32 

33 

34@atheris.instrument_func 

35def TestOneInput(input_bytes): 

36 fdp = atheris.FuzzedDataProvider(input_bytes) 

37 

38 privateKey1 = PrivateKey() 

39 publicKey1 = privateKey1.publicKey() 

40 

41 privateKeyPem = privateKey1.toPem() 

42 publicKeyPem = publicKey1.toPem() 

43 

44 privateKey2 = PrivateKey.fromPem(privateKeyPem) 

45 publicKey2 = PublicKey.fromPem(publicKeyPem) 

46 

47 message = fdp.ConsumeUnicode(sys.maxsize) 

48 

49 signatureBase64 = Ecdsa.sign(message=message, 

50 privateKey=privateKey2).toBase64() 

51 

52 signature = Signature.fromBase64(signatureBase64) 

53 assert(Ecdsa.verify(message=message, signature=signature, publicKey=publicKey2)) 

54 

55 

56def main(): 

57 atheris.Setup(sys.argv, TestOneInput, enable_python_coverage=True) 

58 atheris.Fuzz() 

59 

60 

61if __name__ == "__main__": 

62 main()