29 lines
945 B
Python
29 lines
945 B
Python
# -*- coding: utf-8 -*-
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import hashlib
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from cryptography.hazmat.backends import default_backend
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from cryptography.hazmat.primitives import hashes
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from cryptography.hazmat.primitives.asymmetric import ec
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from cryptography.hazmat.primitives.serialization import load_pem_private_key
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def sign_file(private_key, input_path):
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# Generate SHA512 signature of a file using EC private key
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print('Signing packages')
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with open(private_key, 'rb') as f:
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priv_key = load_pem_private_key(f.read(), None, default_backend())
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with open(input_path, 'rb') as f:
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data = f.read()
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return priv_key.sign(data, ec.ECDSA(hashes.SHA512()))
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def hash_file(file_path):
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# Calculate SHA512 hash of a file
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sha512 = hashlib.sha512()
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with open(file_path, 'rb') as f:
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while True:
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data = f.read(65536)
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if not data:
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break
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sha512.update(data)
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return sha512.hexdigest()
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