Comment Feed for Securely Reading a Custom File Format (TechOff on Channel 9)

Re: Securely Reading a Custom File Format

blowdart — Mon, 30 Jul 2007 17:24:35 GMT

MSDN Mag this month had an article on OPC. Which includes signing of items in the packaged file, so if the signature fails, someone edited it.

Re: Securely Reading a Custom File Format

Minh — Mon, 30 Jul 2007 16:58:30 GMT

The .X format is fairly well documented (if you're using DirectX). And .X is popular enough that there should be a converter (paid or free).

Re: Securely Reading a Custom File Format

thumbtacks2 — Mon, 30 Jul 2007 14:38:17 GMT

Minh wrote:

The most you should probably do is corruption detection.

That was my main concern, although it isn't a big one.

Minh wrote:
Also, why a custom animation format? You wouldn't be able to use any of the available animation tools out there.

It's only a small piece of what I'm doing; I am likely going to be using bones for most of the model animation (as opposed to something like keyframes/interpolation), and am already using Blender for the models (exporting in a wavefront format). I don't know how well Blender exports bone information, however, so that may be a bit of a challenge...although I'm sure I can always alter the relevant Python export script to get what I need.

There are going to be other, smaller bits of animation that I'm going to need, however, and in order to get the effects I want, I'm going to have to come up with at least a couple of new tools...and hence, the custom format.

Thanks for the replies. :)

Re: Securely Reading a Custom File Format

Minh — Mon, 30 Jul 2007 14:13:16 GMT

I wouldn't bother with corruption recovery, I mean, with animation data, what can you do?

The most you should probably do is corruption detection.

Also, why a custom animation format? You wouldn't be able to use any of the available animation tools out there.

Re: Securely Reading a Custom File Format

PerfectPhase — Sun, 29 Jul 2007 22:29:04 GMT

Don't know if it's of any use, but I seem to remember this video having a bit about testing image formats