objcrypt's Introduction

objcrypt

easily encrypt and decrypt python object and JSON objects with AES CBC 32 Block Encryption

planning on adding more encryption algos

installation

pip install objcrypt

or

python3 setup.py install

usage

import objcrypt, json

crypter = objcrypt.Crypter('key')
dictionary = {
  'test': 'test value'
}
encrypted_dict = crypter.encrypt_object(dictionary)

# encrypted_dict now has encrypted values

json_dict = json.loads(dictionary)
enc_json = crypter.encrypt_json(json_dict)

# enc_json is now encrypted

dec_dict = crypter.decrypt_object(encrypted_dict)

# decoded now

dec_json = crypter.decrypt_json(enc_json)

# decoded json object now

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objcrypt's Issues

TypeError: Object type <class 'str'> cannot be passed to C code

When using objcrypt with python3.8 I get the following error when running Crypter('key').encrypt_object(data).

Traceback (most recent call last):
  File ".../test.py", line 7, in <module>
    encrypted_dict = cr.encrypt_object(dictionary)
  File "/usr/lib/python3.8/site-packages/objcrypt/crypter.py", line 20, in encrypt_object
    new_obj[key] = base64.b64encode(iv + cipher.encrypt(raw_value)).decode('utf-8')
  File "/usr/lib/python3.8/site-packages/Crypto/Cipher/_mode_cbc.py", line 178, in encrypt
    c_uint8_ptr(plaintext),
  File "/usr/lib/python3.8/site-packages/Crypto/Util/_raw_api.py", line 144, in c_uint8_ptr
    raise TypeError("Object type %s cannot be passed to C code" % type(data))
TypeError: Object type <class 'str'> cannot be passed to C code

Changing

new_obj[obj_key] = base64.b64encode(iv + cipher.encrypt(raw_value)).decode('utf-8')

new_obj[obj_key] = base64.b64encode(iv + cipher.encrypt(str.encode(raw_value))).decode('utf-8')

in the _encrypt_object method fixed the problem for me - as I am not an encryption expert I'm not sure why it fixed the problem (this solution was inspired by this post).

In Documentation

json_dict = json.loads(dictionary)

Change loads method to dump i.e json.dump(dictionary)

Because loads convert JSON to Python object what we need here is reverse convert Python object to JSON object .It'll be done by json.dump(Python_object) method.

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