Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.11/site-packages/nacl/bindings/crypto_hash.py: 41%

1# Copyright 2013 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 import exceptions as exc 

17from nacl._sodium import ffi, lib 

18from nacl.exceptions import ensure 

19 

20 

21# crypto_hash_BYTES = lib.crypto_hash_bytes() 

22crypto_hash_BYTES: int = lib.crypto_hash_sha512_bytes() 

23crypto_hash_sha256_BYTES: int = lib.crypto_hash_sha256_bytes() 

24crypto_hash_sha512_BYTES: int = lib.crypto_hash_sha512_bytes() 

25 

26 

27def crypto_hash(message: bytes) -> bytes: 

28 """ 

29 Hashes and returns the message ``message``. 

30 

31 :param message: bytes 

32 :rtype: bytes 

33 """ 

34 digest = ffi.new("unsigned char[]", crypto_hash_BYTES) 

35 rc = lib.crypto_hash(digest, message, len(message)) 

36 ensure(rc == 0, "Unexpected library error", raising=exc.RuntimeError) 

37 return ffi.buffer(digest, crypto_hash_BYTES)[:] 

38 

39 

40def crypto_hash_sha256(message: bytes) -> bytes: 

41 """ 

42 Hashes and returns the message ``message``. 

43 

44 :param message: bytes 

45 :rtype: bytes 

46 """ 

47 digest = ffi.new("unsigned char[]", crypto_hash_sha256_BYTES) 

48 rc = lib.crypto_hash_sha256(digest, message, len(message)) 

49 ensure(rc == 0, "Unexpected library error", raising=exc.RuntimeError) 

50 return ffi.buffer(digest, crypto_hash_sha256_BYTES)[:] 

51 

52 

53def crypto_hash_sha512(message: bytes) -> bytes: 

54 """ 

55 Hashes and returns the message ``message``. 

56 

57 :param message: bytes 

58 :rtype: bytes 

59 """ 

60 digest = ffi.new("unsigned char[]", crypto_hash_sha512_BYTES) 

61 rc = lib.crypto_hash_sha512(digest, message, len(message)) 

62 ensure(rc == 0, "Unexpected library error", raising=exc.RuntimeError) 

63 return ffi.buffer(digest, crypto_hash_sha512_BYTES)[:]