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Subject: Groups - sstc-saml-holder-of-key-browser-sso-draft-01.pdf (sstc-saml-holder-of-key-browser-sso-draft-01.pdf) uploaded

As part of my work for the National Institute of Informatics and the UPKI
initiative, I've been working on a modified Web Browser SSO profile for
SAML 2.0 that uses holder-of-key confirmation for the client rather than
bearer authentication.  The keys for this confirmation are supplied through
TLS using client certificates.  This results in a more secure sign-on
process and, particularly, a more secure resulting session at the SP. 
There is no need for the SP to do PKI validation or know anything about the
client certificate itself.  It'll be difficult for me to attend initial
conference calls, but I should be able to make it.  If not, I'll appoint a
representative and rely on minutes.

I'd like to particularly thank all the acknowledged and unacknowledged
contributors who have already pitched in their ideas, and look forward to
more helpful refinement from potential implementors and standards veterans

Thanks a lot for the warm welcome.

 -- Mr. Nathan Klingenstein

The document named sstc-saml-holder-of-key-browser-sso-draft-01.pdf
(sstc-saml-holder-of-key-browser-sso-draft-01.pdf) has been submitted by
Mr. Nathan Klingenstein to the OASIS Security Services (SAML) TC document

Document Description:
This profile allows for transport and validation of holder-of-key
assertions by standard HTTP user 
agents with no modification of client software and maximum compatibility
with existing 
deployments.  Most of the flows are as in standard Web Browser SSO, but an
x.509 certificate 
presented by the user agent supplies a valid keypair through client TLS
authentication for HTTP 
transactions. Cryptographic data resulting from TLS authentication is used
for holder-of-key 
validation of a SAML assertion.  This strengthens the assurance of the
resulting authentication 
context and protects against credential theft, giving the service provider
fresh authentication and 
attribute information without requiring it to perform successful validation
of the certificate.

View Document Details:

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