@Summersay415 - Please do not alter your title to include topic-only tags in [] in all caps, as per the forum rules recommendations:
- Please avoid using brackets [] or parenthesis () in your titles. Use tags when needed, especially in the projects category.
- Do not use all CAPS excessively. There are other, less excessive ways to call attention to your words.
In the future, please make a post with what you have tried or state you are still having issues with this problem. That way, not only will the post be bumped in the recent discussions, but it also follows the guidelines for the forums.
Edit: Another additional benefit of not using topic-only tags in [] is that it makes it easier for others with the same problem to find the post.
As for the question itself, I do not have a have experience with this so I am not sure on an exact answer. That said, if you are okay with using C#, there is probably a Mono Library for signing and reading signed files that you can use with the .pck files.
You can also use C# to read the checksum, like sent44 suggested. Here is a link with some example C# code:
