The bug is: https://bugzilla.xamarin.com/show_bug.cgi?id=9247
On Thu, Jan 3, 2013 at 7:54 PM, Sebastien Pouliot < [email protected]> wrote: > On Thu, Jan 3, 2013 at 7:40 PM, Drew DeVault <[email protected]> wrote: > > I get access denied on that bug. > > Sorry I had not noticed the bug to be private (I assumed only the > attachment was). > > Please fill a (public) bug report and I'll close the private one as a > duplicate (but without leaking information from it). That way everyone > interested can be on c.c. > > > As for the MS implementation, it's > > which one ?* the RijndaelManaged one or the AesCryptoServiceProvider > one - because they don't match each other :-( and they should when > Rijndael is set to use 128bits blocks. > > * I presume the former based your link to the source code but, right > now (and depending on some settings), Mono is not compatible with > either. OTOH CFB8 (eight being the only feedback size supported for > them) works for other ciphers (e.g. DES, 3DES, RC2). > > > compatible with the Java implementation, at least, so it's less likely > to be > > incorrect. > > one of MS implementations must be ;-) > > > How should this be solved? I can't have this only work on Windows with > > MS.NET. > > First step is the bug report, along with all the data that can prove > useful. > > After this you can wait for a fix.... I'm looking into it now but I > can't promise when it will be done (need to be careful not to regress > the other ciphers, CFB or other modes). Mono is also open source so > you're welcome to contribute fixes. > > Sebastien > > > > > On Thu, Jan 3, 2013 at 3:38 PM, Sebastien Pouliot > > <[email protected]> wrote: > >> > >> Hello Drew, > >> > >> There was a bug filled yesterday, #9201 [1]. You might want to c.c. > >> yourself to it. > >> > >> FWIW it's not really AES related. MS implementation(s) of CFB are a bit > >> weird. > >> > >> RijndaelManaged does it differently than others .NET ciphers (which is > >> what Mono supports), including AesCryptoServiceProvider (even when the > >> former uses a 128 bits block size). > >> > >> AesManaged does not even support CFB (even if it was, once upon a > >> time, documented as a wrapper on top of RijndaelManaged). > >> > >> Sebastien > >> > >> [1] https://bugzilla.xamarin.com/show_bug.cgi?id=9201 > >> > >> On Thu, Jan 3, 2013 at 4:55 PM, Rodrigo Kumpera <[email protected]> > wrote: > >> > Please file a bug in bugzilla.xamarin.com with a test case. > >> > > >> > > >> > > >> > > >> > On Tue, Jan 1, 2013 at 11:00 PM, Drew DeVault <[email protected]> > >> > wrote: > >> >> > >> >> I'm having an issue with Mono that does not appear on Microsoft.NET, > >> >> related to AES/CFB encryption with no padding. Firstly, here's my > Mono > >> >> version: > >> >> > >> >> Mono JIT compiler version 2.10.8.1 (Debian 2.10.8.1-1ubuntu2.2) > >> >> Copyright (C) 2002-2011 Novell, Inc, Xamarin, Inc and Contributors. > >> >> www.mono-project.com > >> >> TLS: __thread > >> >> SIGSEGV: altstack > >> >> Notifications: epoll > >> >> Architecture: amd64 > >> >> Disabled: none > >> >> Misc: softdebug > >> >> LLVM: supported, not enabled. > >> >> GC: Included Boehm (with typed GC and Parallel > Mark) > >> >> > >> >> Secondly, I would like to find a solution that does indeed work on > this > >> >> version of Mono, because most of my users are on the same version. > The > >> >> problem comes > >> >> from using a CryptoStream with a RijndaelManaged cipher. I have > >> >> attached a > >> >> proof of concept to the email, along with the results of running it > on > >> >> Windows with > >> >> Microsoft.NET and on Linux Mint 12 with Mono. > >> >> > >> >> The AesStream in the example comes from this project: > >> >> > >> >> > https://github.com/SirCmpwn/Craft.Net/blob/master/Craft.Net/AesStream.cs > >> >> > >> >> In short, on Microsoft.NET, writing to the CryptoStream does indeed > >> >> encrypt the data properly, where on Mono, no data is written, and an > >> >> IndexOutOfBoundsException is thrown when trying to read the encrypted > >> >> data. > >> >> > >> >> Drew DeVault > >> >> > >> >> _______________________________________________ > >> >> Mono-list maillist - [email protected] > >> >> http://lists.ximian.com/mailman/listinfo/mono-list > >> >> > >> > > > > > >
_______________________________________________ Mono-list maillist - [email protected] http://lists.ximian.com/mailman/listinfo/mono-list
