def __init__(self, user_id, user_ik):
super().__init__(user_id)
if user_ik is None:
raise ValueError('User ik must be set')
self.encryption = JWEDirEncrypter()
self.decryption = JWEDirDecrypter()
self.user_ik = user_ik
def test_decryption(self):
cek = os.urandom(32)
plain_text = "test decryption"
encrypter = JWEDirEncrypter()
decrypter = JWEDirDecrypter()
encrypted_text = encrypter.encrypt(plain_text, cek)
self.assertEqual(plain_text, decrypter.decrypt(encrypted_text, cek))
def test_decryption(self):
cek = os.urandom(32)
plain_text = "test decryption"
encrypter = JWEDirEncrypter()
decrypter = JWEDirDecrypter()
encrypted_text = encrypter.encrypt(plain_text, cek)
self.assertEqual(plain_text, decrypter.decrypt(encrypted_text, cek))
class EncryptedStorage(DatabaseStorage):
def __init__(self):
self.encryption = JWEDirEncrypter()
self.decryption = JWEDirDecrypter()
def store(self, data, user_id, user_ik):
encrypted_data = self.encrypt_data(user_id, user_ik, data)
super(EncryptedStorage, self).store(encrypted_data, user_id)
def get(self, user_id, user_ik):
data = super(EncryptedStorage, self).get(user_id)
if 'data' in data:
decrypted_data = self.decrypt_data(user_id, user_ik, data)
json_data = json.loads(decrypted_data)
return json_data
else:
return {}
def encrypt_data(self, user_id, user_ik, data):
sha_key = generate_key(user_id, user_ik)
encrypted = self.encryption.encrypt(json.dumps(data), sha_key)
return {'data': encrypted}
def decrypt_data(self, user_id, user_ik, encrypted_data):
sha_key = generate_key(user_id, user_ik)
return self.decryption.decrypt(encrypted_data['data'], sha_key)
class EncryptedQuestionnaireStorage(QuestionnaireStorage):
def __init__(self, user_id, user_ik):
super().__init__(user_id)
if user_ik is None:
raise ValueError('User ik must be set')
self.encryption = JWEDirEncrypter()
self.decryption = JWEDirDecrypter()
self.user_ik = user_ik
def add_or_update(self, data):
encrypted_data = self.encrypt_data(data)
super(EncryptedQuestionnaireStorage, self).add_or_update(encrypted_data)
def get_user_data(self):
data = super(EncryptedQuestionnaireStorage, self).get_user_data()
if 'data' in data:
decrypted_data = self.decrypt_data(self.user_id, self.user_ik, data)
return decrypted_data
def encrypt_data(self, data):
sha_key = generate_key(self.user_id, self.user_ik)
encrypted = self.encryption.encrypt(data, sha_key)
return {'data': encrypted}
def decrypt_data(self, user_id, user_ik, encrypted_data):
sha_key = generate_key(user_id, user_ik)
return self.decryption.decrypt(encrypted_data['data'], sha_key)
def __init__(self):
self.encryption = JWEDirEncrypter()
self.decryption = JWEDirDecrypter()
def _decrypt_data(self, encrypted_data):
return JWEDirDecrypter().decrypt(encrypted_data['data'], self._cek)