Re: How to get KeyUsage field given .NET X509Certificate instance?

From: Joe Kaplan \(MVP - ADSI\) (joseph.e.kaplan_at_removethis.accenture.com)
Date: 07/29/03 

Date: Tue, 29 Jul 2003 10:47:38 -0500

Thanks a lot. You guys rock.

Joe K.

"Michel Gallant" <neutron@istar.ca> wrote in message
news:e4YfFgdVDHA.3088@tk2msftngp13.phx.gbl...
> Hi Joe,
>
> CAPICOM has some utilities methods. Here is a simple
> script approach, which first converts a byte array (body) to
> a BSTR and then you can proceed. Similar approaches work
> for .NET
> - Mitch Gallant
>
> -------------
> set oUtils = CreateObject("CAPICOM.Utilities")
> set oCert = CreateObject("CAPICOM.Certificate")
> ... get byte array 'body' from somewhere
> certStr = oUtils.ByteArrayToBinaryString(body)
> oCert.Import(certStr)
> oCert.Display()
> ---------------
>
> "Joe Kaplan (MVP - ADSI)" <joseph.e.kaplan@removethis.accenture.com> wrote
in message
> news:%23GwG2hZVDHA.3376@tk2msftngp13.phx.gbl...
> > Thanks. Import looks promising, but it takes a string and it isn't
clear to
> > me what format that should be from the documentation. Base64? Pretty
> > vague...
> >
> >
>
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/security/security/certificate_import.asp?frame=true
> >
> > I'll check out your library as it sounds very promising.
> >
> > Joe K.
> >
> > "Pieter Philippaerts" <Pieter@nospam.mentalis.org> wrote in message
> > news:%23Hy8xQVVDHA.3376@tk2msftngp13.phx.gbl...
> > > "Joe Kaplan (MVP - ADSI)" <joseph.e.kaplan@removethis.accenture.com>
wrote
> > > > I'm trying to figure out a good way to get key usage information
> > > > (such as what is returned from the CAPICOM KeyUsage
> > > > object) if I have an instance of a .NET X509Certificate class.
> > >
> > > The .NET X509Certificate class does not have too many options, so you
> > might
> > > want to consider switching to some other library that offers more
options.
> > > CAPICOM is one choice, but for a non-COM way check out the Certificate
> > > Services library at
http://www.mentalis.org/soft/projects/certificates/ It
> > > has a Certificate class that works like the .NET X509Certificate class
but
> > > it has more options, including a method called GetIntendedKeyUsage
that
> > > returns what you're looking for.
> > >
> > > > I guess I'm not sure how to instantiate a CAPICOM Certificate
> > > > object given a byte[]. Any ideas?
> > >
> > > Have you looked at Certificate.Import ?
> > >
> > > Regards,
> > > Pieter Philippaerts
> > > Managed SSL/TLS: http://www.mentalis.org/go.php?sl
> > >
> > >
> >
> >
>
>

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