Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/PyNaCl-1.6.0.dev1-py3.8-linux-x86_64.egg/nacl/pwhash/__init__.py: 81%

1# Copyright 2017 Donald Stufft and individual contributors 

2# 

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

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

5# You may obtain a copy of the License at 

6# 

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

8# 

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

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

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

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

13# limitations under the License. 

14 

15 

16from nacl.exceptions import CryptPrefixError 

17 

18from . import _argon2, argon2i, argon2id, scrypt 

19 

20STRPREFIX = argon2id.STRPREFIX 

21 

22PWHASH_SIZE = argon2id.PWHASH_SIZE 

23 

24assert _argon2.ALG_ARGON2_DEFAULT == _argon2.ALG_ARGON2ID13 

25# since version 1.0.15 of libsodium 

26 

27PASSWD_MIN = argon2id.PASSWD_MIN 

28PASSWD_MAX = argon2id.PASSWD_MAX 

29MEMLIMIT_MAX = argon2id.MEMLIMIT_MAX 

30MEMLIMIT_MIN = argon2id.MEMLIMIT_MIN 

31OPSLIMIT_MAX = argon2id.OPSLIMIT_MAX 

32OPSLIMIT_MIN = argon2id.OPSLIMIT_MIN 

33OPSLIMIT_INTERACTIVE = argon2id.OPSLIMIT_INTERACTIVE 

34MEMLIMIT_INTERACTIVE = argon2id.MEMLIMIT_INTERACTIVE 

35OPSLIMIT_MODERATE = argon2id.OPSLIMIT_MODERATE 

36MEMLIMIT_MODERATE = argon2id.MEMLIMIT_MODERATE 

37OPSLIMIT_SENSITIVE = argon2id.OPSLIMIT_SENSITIVE 

38MEMLIMIT_SENSITIVE = argon2id.MEMLIMIT_SENSITIVE 

39 

40str = argon2id.str 

41 

42assert argon2i.ALG != argon2id.ALG 

43 

44SCRYPT_SALTBYTES = scrypt.SALTBYTES 

45SCRYPT_PWHASH_SIZE = scrypt.PWHASH_SIZE 

46SCRYPT_OPSLIMIT_INTERACTIVE = scrypt.OPSLIMIT_INTERACTIVE 

47SCRYPT_MEMLIMIT_INTERACTIVE = scrypt.MEMLIMIT_INTERACTIVE 

48SCRYPT_OPSLIMIT_SENSITIVE = scrypt.OPSLIMIT_SENSITIVE 

49SCRYPT_MEMLIMIT_SENSITIVE = scrypt.MEMLIMIT_SENSITIVE 

50 

51 

52kdf_scryptsalsa208sha256 = scrypt.kdf 

53scryptsalsa208sha256_str = scrypt.str 

54verify_scryptsalsa208sha256 = scrypt.verify 

55 

56 

57def verify(password_hash: bytes, password: bytes) -> bool: 

58 """ 

59 Takes a modular crypt encoded stored password hash derived using one 

60 of the algorithms supported by `libsodium` and checks if the user provided 

61 password will hash to the same string when using the parameters saved 

62 in the stored hash 

63 """ 

64 if password_hash.startswith(argon2id.STRPREFIX): 

65 return argon2id.verify(password_hash, password) 

66 elif password_hash.startswith(argon2i.STRPREFIX): 

67 return argon2id.verify(password_hash, password) 

68 elif scrypt.AVAILABLE and password_hash.startswith(scrypt.STRPREFIX): 

69 return scrypt.verify(password_hash, password) 

70 else: 

71 raise ( 

72 CryptPrefixError( 

73 "given password_hash is not in a supported format" 

74 ) 

75 )