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Advanced encryption protecting your python codebase.

Project description

SOURCEdefender - advanced encryption protecting your Python codebase


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SOURCEdefender can protect your plaintext Python source code with AES 256-bit Encryption. There is no impact on the performance of your running application as the decryption process takes place during the import of your module or when loading your script on the command-line. Encrypted code won't run any slower once loaded from a .pye file compared to loading from a .py or .pyc file.

As we hook directly into the import process there are no cross platform or Python version compatibility issues. Encrypted code will run on the ANY target environment we support. Obviously your code needs to be written with the target platform in mind, we can't automagically make sys.getwindowsversion() work on Linux.

Features

  • Code encrypted with AES 256-bit encryption.
  • Encrypted code will run on ANY supported environment.
  • Enforced expire time on encrypted code (optional).

Supported Environments

Architecture Operating System Python 3.6 Python 3.7 Python 3.8 Python 3.9-dev
x86_64 Windows 10 Y Y Y N
x86_64 Linux Y Y Y N
x86_64 macOS Y Y N N
ARMv7 Linux Y Y Y N
  • Note: We have had to drop support for 3.9-dev in this release as upstream are having issues with the latest Cython pip package.

Usage

How do I protect my Python source code?

Let's have a look at an example of the encryption process:

$ cat /home/ubuntu/helloworld.py
print("Hello World!")

This is a very basic example and produces the following output:

$ python3 /home/ubuntu/helloworld.py
Hello World!

We do not want anyone to get at our source code and we also don't want anyone to run this code after 1 day. When we encrypt the file we can enforce an expire time of 1 day from now with the --ttl option as follows:

$ sourcedefender encrypt --ttl=1d /home/ubuntu/helloworld.py
SOURCEdefender v5.0.12

Processing:

/home/ubuntu/helloworld.py

Now the file is encrypted, its contents are as follows:

$ cat /home/ubuntu/helloworld.pye
-----BEGIN SOURCEDEFENDER FILE-----
Version : 5.0.12

KkVjZjNWRV4rZvmUFhXBQhPwlR6wUWASZO/Gnh8sJKzpW7c3D8TRbLfNXn01Q182QigxeW1tagq1
c8A0WiWh5wa2k7YCd4oNugSqv/FABal7Wh1vDsVh7rPXFcamQhfqU1kv5CtmN/2G1EqRUy2PGu+p
camVzPjFXmFkQ21+fj80MUg0Z1oG3PniOXCJ0V/Qu3/Bw0Fic0BZTGxjTm4=

------END SOURCEDEFENDER FILE------

Once a file has been encrypted, its extension is changed .py to .pye, this is so the module knows its encrypted and can process it accordingly during import. All you need to remember is to inlcude sourcedefender as a dependency while packaging your project and import the sourcedefender module before you attempt to use your encrypted code.

Can I still run Python from the command-line?

Yes, you can still run scripts from the command-line, but you need to run the sourcedefender library module, and include your encrypted file name as the first argument:

$ python3 -m sourcedefender /home/ubuntu/helloworld.pye
Hello World!
$

Or access the module via the usual import system:

$ cd /home/ubuntu
$ ls
helloworld.pye
$ python3
>>>
>>> import sourcedefender
>>> import helloworld
Hello World!
>>> exit()
$

Legal

Copyright (c) 2018-2019 SOURCEdefender. All rights reserved.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. REVERSE ENGINEERING IS STRICTLY PROHIBITED.

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Files for sourcedefender, version 5.0.12
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