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Adunatio/internal_lib/EncryptedField.py

65 lines
2.0 KiB

import binascii
import re
from mongoengine.base import BaseField
from Crypto.PublicKey import RSA
from Crypto.Cipher import PKCS1_OAEP
class EncryptedStringField(BaseField):
"""A unicode encrypted string field."""
keyPair = None
def __init__(self, **kwargs):
import os
priv_key = os.environ.get('ADUNATIO_PRIV_KEY')
self.keyPair = RSA.importKey(open(priv_key).read())
super().__init__(**kwargs)
def __get__(self, instance, owner):
from flask import current_app as app
app.logger.error(self.name)
import binascii
if instance:
value = instance._data.get(self.name)
if value:
app.logger.error(value)
encryptor = PKCS1_OAEP.new(self.keyPair)
return encryptor.decrypt(binascii.unhexlify(value)).decode("utf-8")
else:
return None
def __set__(self, instance, value):
super().__set__(instance, value)
if value is not None:
from flask import current_app as app
app.logger.error(self.name)
app.logger.error(instance._data)
app.logger.error("data : {} ".format(value))
print(self.name)
print(instance._data)
print(value)
key = self.name
try:
encryptor = PKCS1_OAEP.new(self.keyPair.publickey())
instance._data[key] = binascii.hexlify(encryptor.encrypt(value.encode('utf-8')))
instance._mark_as_changed(key)
except:
instance._data[key] = value
instance._mark_as_changed(key)
def to_python(self, value):
if isinstance(value, str):
return value
try:
value = value.decode("utf-8")
except Exception:
pass
return value
def lookup_member(self, member_name):
return None
def prepare_query_value(self, op, value):
return super().prepare_query_value(op, value)