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Re: [higgins-dev] STS Certificate Usage

Mike,
 
Are you ok if I just go ahead and check in the proposed fix to MetadataExchangeService.java?
 
Daniel

>>> Michael McIntosh <mikemci@xxxxxxxxxx> 5/2/2008 5:24 PM >>>
Daniel,

I agree - please enter a bugzilla and ref your email message.

Regards,
Mike

higgins-dev-bounces@xxxxxxxxxxx wrote on 05/02/2008 03:23:56 PM:

> Mike,
>
> We would like to use a certificate other than our IdP STS SSL
> certificate to sign tokens.  At first glance, it appeared that the
> Higgins STS had provided for this by having two different settings
> in the configuration file: IssuerCertificate and SSLCertificate.
> However, when we tried to make them different we ran into problems.
>
> The IssuerCertificate is inserted into the mex policy in place of
> the "urn:CERTIFICATE" string (see MetadataExchangeService.java).  It
> is also used to sign tokens (see TokenGeneratorHandler.java).  It
> appears that SSLCertificate is only used in the ProfileService.  If
> the certificate inserted into the mex data is not SSL certificate of
> the IdP STS, CardSpace will complain.  You get an error in the event
> log stating that the IdP's SSL certificate thumbprint does not match
> the thumbprint of the certificate in the mex data.  We asked
> Microsoft about this, and this was their response:
>
> "CardSpace checks that the same identity cert in the mex policy is
> the same cert used to set up a channel with the sts.  This is to
> build a chain of trust from the policy, to the IP STS."
>
> They also point out that the token signing certificate can be
> different than the identity cert in the mex policy.
>
> The problem in the Higgins STS is that if we insert the
> IssuerCertificate in the mex data, it means that IssuerCertificate
> has to be the same as the SSL cert for the IdP STS.  Because
> IssuerCertificate is also used for token signing, it effectively means
that:
>
> IssuerCertificate == IdP STS SSL Certificate == token signing certificate
>
> We are effectively left in a situation where the signing certificate
> has to be the same as the SSL certificate.  It doesn't seem that
> this was intentional, but perhaps an oversight.  We would like to be
> able to get away from that limitation and use use a different
> certificate than the SSL certificate for token signing.
>
> It appears that this problem could be fixed very easily by modifying
> MetadataExchangeService.java to insert the SSLCertificate into the
> mex data instead of the IssuerCertificate, and then only use
> IssuerCertificate for token signing.
>
> Does this seem like the right solution to you?
>
> Thank you,
>
> Daniel Sanders
>  _______________________________________________
> higgins-dev mailing list
> higgins-dev@xxxxxxxxxxx
> https://dev.eclipse.org/mailman/listinfo/higgins-dev

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