Coverage for /pythoncovmergedfiles/medio/medio/src/fuzz_hash.py: 49%

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 atheris 

28import sys 

29 

30with atheris.instrument_imports(): 

31 from Crypto.Hash import ( 

32 CMAC, 

33 HMAC, 

34 SHA224, 

35 SHA256, 

36 SHA384, 

37 SHA512, 

38 MD2, 

39 MD4, 

40 MD5, 

41 RIPEMD160 

42 ) 

43 from Crypto.Cipher import AES 

44 

45 

46 

47@atheris.instrument_func 

48def TestOneInput(data): 

49 fdp = atheris.FuzzedDataProvider(data) 

50 

51 hashes = [ 

52 SHA224, 

53 SHA256, 

54 SHA384, 

55 SHA512, 

56 MD2, 

57 MD4, 

58 MD5, 

59 RIPEMD160 

60 ] 

61 for f in hashes: 

62 h = f.new() 

63 h.update(data) 

64 h.digest 

65 

66 h = HMAC.new(fdp.ConsumeBytes(9)) 

67 h.update(data) 

68 h.digest 

69 

70 try: 

71 cobj = CMAC.new(fdp.ConsumeBytes(16), ciphermod=AES) 

72 cobj.update(data) 

73 except ValueError as e: 

74 if "Key cannot be the null string" not in str(e): 

75 raise e 

76 

77 

78 

79def main(): 

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

81 atheris.Fuzz() 

82 

83if __name__ == "__main__": 

84 main()