forked from oyd/Adunatio
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52 lines
1.5 KiB
52 lines
1.5 KiB
import binascii
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import re
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from mongoengine.base import BaseField
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from Crypto.PublicKey import RSA
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from Crypto.Cipher import PKCS1_OAEP
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class EncryptedStringField(BaseField):
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"""A unicode encrypted string field."""
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keyPair = None
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def __init__(self, **kwargs):
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import os
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priv_key = os.environ.get('ADUNATIO_PRIV_KEY')
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self.keyPair = RSA.importKey(open(priv_key).read())
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super().__init__(**kwargs)
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def __get__(self, instance, owner):
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import binascii
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if instance:
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value = instance._data.get(self.name)
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if value:
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encryptor = PKCS1_OAEP.new(self.keyPair)
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return encryptor.decrypt(binascii.unhexlify(value)).decode("utf-8")
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else:
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return None
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def __set__(self, instance, value):
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super().__set__(instance, value)
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if value is not None:
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key = self.name
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try:
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encryptor = PKCS1_OAEP.new(self.keyPair.publickey())
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instance._data[key] = binascii.hexlify(encryptor.encrypt(value.encode('utf-8')))
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instance._mark_as_changed(key)
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except:
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instance._data[key] = value
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instance._mark_as_changed(key)
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def to_python(self, value):
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if isinstance(value, str):
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return value
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try:
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value = value.decode("utf-8")
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except Exception:
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pass
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return value
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def prepare_query_value(self, op, value):
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return super().prepare_query_value(op, value)
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