[Mono-list] Regarding - SHA-2 supported version in mono

Alan alan.mcgovern at gmail.com
Tue Dec 1 10:09:36 UTC 2015

I'd say trying a newer mono build first would be the best option. Either
4.2, 4.3 or master. SHA2 certs have been supported for a very long time, so
if you are still having issues maybe you could provide access to some certs
to reproduce the problem with?


On 30 November 2015 at 12:04, Edward Ned Harvey (mono) <
edward.harvey.mono at clevertrove.com> wrote:

> > From: mono-list-bounces at lists.ximian.com [mailto:mono-list-
> > bounces at lists.ximian.com] On Behalf Of Kaushik Velusamy
> >
> > I have a query regarding SHA-2 supported version in mono.
> >
> > Novell iFloder ( On OpenEnterpriseServer11SP3) which runs on SLES11SP3
> > ran into an issue because of SHA2 certificates. eDirectory has moved to
> SHA-
> > 2 certificates and hence all components of OES needs to be compatible.
> > However iFloder is having issue since MONO that is part of SLES11SP3 (
> > mono-core-2.6.7-0.9.1.x86_64.rpm) does not support SHA-2.
> >
> > I tried in mono-3.6 as well.
> >
> > Could you tell me which is the supported mono version for SHA-2?
> I think there's something wrong in your question. SHA2 (generally SHA256
> to SHA512) is definitely supported in mono.
> Your error message does say " Unsupported hash algorithm:
> 1.2.840.113549.1.1.11" and the OID does map to sha256WithRSAEncryption, but
> the problem is in Mono.Security.X509.X509Certificate, which is all kinds of
> messed up, and barely functional at all. I have not heard of anyone working
> on it - but that doesn't mean they're not.
> If I'm not mistaken, iFolder is not actively maintained, right? That would
> be a problem. Yes, there is a limitation of mono in the brokenness of
> X509Certificate, but assuming that's not going to be fixed anytime soon,
> the iFolder developers will basically need to find a way to workaround the
> problem...
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