[BUG] 4.6.3 il2cpp broke Crypto stuff?

Hi there,

yesterday I downloaded the 4.6.3 release in order to test our game with the Metal API (works quite ok, but still some bugs, but that is another case...).

After testing around a bit in conjunction with our newest game I noticed a strange output in the XCode console:

Code (CSharp):

1. CryptographicException: Bad PKCS7 padding. Invalid length 27.
2. .....
3. (Filename: currently not available on il2cpp Line: -1)

At first I thought that I broke something with our encryption keys or something (we are using our Asset CryptoPlayerPrefs). After fiddling around for 2 hours I said: Ok, well, I can't find a bug - let's go back to 4.6.2p1 (version in that we last built the game) and try if it still happens.

See there: Somewhere in between 4.6.2p1 and 4.6.3 il2cpp was broken regarding the Crypto functionality - on 4.6.2p1 it works flawlessly!

I already filled out a bug report [and sent CryptoPlayerPrefs as an example] (#673791), but I wanted to know if anyone else has this issue...

For us it is a big problem, because we can't iterate on our game until this is fixed properly and furthermore our Asset "CryptoPlayerPrefs" is affected, because it seems to not work on iOS if Version 4.6.3 is used...

Regards,
Bennet

 

I seem to have similar issue. so they might be related..for me it broke on 4.6.3

 

Just a small addition: Just downloaded the latest Unity 5 RC and there it also works fine. Just 4.6.3 is somehow broken.

 

yes, you are right..it worked in unity5... although it don't get the same framerate as with 4.x+ OpenGL otherwise I'd be tempted to abandon 4.x =O

 

Can confirm, I also have the same Bad PKCS7 padding issue on 4.6.3 whilst trying to use symmetric decryption. Works fine on Mono.

Don't have an ios device with me now so I can't test it much further, but I guess something goes wrong during string encoding/decoding, which is one of the usual cases that trigger this error on Mono.

 

We also find the same problem in Unity 4.6.3 version, in previous versions it was working fine

 

The same problem. Bad PKCS7 padding issue on 4.6.3 with IL2CPP. Works fine on Mono.

 

All good in latest 4.6 but the issue seems to be back in Unity5 release build, what is the time frame for bringing over fixes from the 4.6 patches to unity5?

 

Is it possible that this (or some sort of similar) problem is back again? Just received a bug report from a CryptoPlayerPrefs user which goes into this direction. Furthermore I noticed a Bad padding error in the Editor Console when I upgraded from 4.6.3pX to 4.6.4. But if it now also occurs in the editor then it is probably not related to IL2CPP and broke at another point in Unity.

I'll update here if I had time to investigate further on this...