Coverage for /pythoncovmergedfiles/medio/medio/src/fuzz_ecdsa.py: 50%

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 2023 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. 

26import sys 

27import atheris 

28import hashlib 

29import binascii 

30import ecdsa 

31 

32 

33def target1(fdp): 

34 d = fdp.ConsumeIntInRange( 

35 1, 9999999999999999999999999999999999999999999999999999999999) 

36 k = fdp.ConsumeIntInRange( 

37 1, 9999999999999999999999999999999999999999999999999999999999) 

38 msg = fdp.ConsumeIntInRange( 

39 1, 9999999999999999999999999999999999999999999999999999999999) 

40 

41 Q = d * ecdsa.ecdsa.generator_192 

42 R = k * ecdsa.ecdsa.generator_192 

43 

44 pubk = ecdsa.ecdsa.Public_key(ecdsa.ecdsa.generator_192, 

45 ecdsa.ecdsa.generator_192 * d) 

46 privk = ecdsa.ecdsa.Private_key(pubk, d) 

47 sig = privk.sign(msg, k) 

48 pubk.verifies(msg, sig) 

49 pubk.verifies(msg - 1, sig) 

50 

51 

52def target2(fdp): 

53 ecdsa._sha3.shake_256(fdp.ConsumeBytes(sys.maxsize), 

54 fdp.ConsumeIntInRange(1, 64)) 

55 

56 

57def TestOneInput(data): 

58 fdp = atheris.FuzzedDataProvider(data) 

59 targets = [ 

60 target1, 

61 target2, 

62 ] 

63 target = fdp.PickValueInList(targets) 

64 target(fdp) 

65 

66 

67def main(): 

68 atheris.instrument_all() 

69 atheris.Setup(sys.argv, TestOneInput) 

70 atheris.Fuzz() 

71 

72 

73if __name__ == "__main__": 

74 main()