64 lines
1.5 KiB
Python
64 lines
1.5 KiB
Python
# standard imports
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import json
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import logging
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from typing import Optional
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from urllib.request import Request, urlopen
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# third-party imports
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import gnupg
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# local imports
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logg = logging.getLogger()
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class Signer:
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"""
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:cvar gpg_path:
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:type gpg_path:
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:cvar gpg_passphrase:
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:type gpg_passphrase:
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:cvar key_file_path:
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:type key_file_path:
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"""
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gpg_path: str = None
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gpg_passphrase: str = None
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key_file_path: str = None
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def __init__(self):
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self.gpg = gnupg.GPG(gnupghome=self.gpg_path)
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# parse key file data
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key_file = open(self.key_file_path, 'r')
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self.key_data = key_file.read()
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key_file.close()
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def get_operational_key(self):
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"""
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:return:
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:rtype:
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"""
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# import key data into keyring
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self.gpg.import_keys(key_data=self.key_data)
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gpg_keys = self.gpg.list_keys()
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key_algorithm = gpg_keys[0].get('algo')
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key_id = gpg_keys[0].get("keyid")
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logg.debug(f'using signing key: {key_id}, algorithm: {key_algorithm}')
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return gpg_keys[0]
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def sign_digest(self, data: bytes):
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"""
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:param data:
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:type data:
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:return:
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:rtype:
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"""
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data = json.loads(data)
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digest = data['digest']
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key_id = self.get_operational_key().get('keyid')
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signature = self.gpg.sign(digest, passphrase=self.gpg_passphrase, keyid=key_id)
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return str(signature)
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