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Subject: RE: [saml-dev] the value of AuthnInstant
I would guess that either most IdPs get it right or most SPs don't check. Also, implementers probably wonder (as I guess you did) what the difference is between Assertion IssueInstant and AuthnStatement AuthnInstant. ::Ari > -----Original Message----- > From: Tom Scavo [mailto:trscavo@gmail.com] > Sent: Thursday, February 07, 2008 8:23 PM > To: Eve Maler > Cc: SAML Developers > Subject: Re: [saml-dev] the value of AuthnInstant > > > Thanks, Eve. I wasn't sure. > > Thinking out loud, I wonder how many implementations get this right? > > Tom > > On Feb 7, 2008 7:48 PM, Eve Maler <Eve.Maler@sun.com> wrote: > > It's t1, isn't it? One assertion, issued at time t2, and another, > > issued at time t4, will both indicate that the user authenticated at > > time t1 -- assuming that authn session is still good, of > course (e.g., > > re-authn isn't being forced). > > > > Eve > > > > > > On Feb 7, 2008, at 4:04 PM, Tom Scavo wrote: > > > > > Suppose a user presents an AuthnRequest to an IdP at time > t0. Since > > > the user has no security context initially, the IdP challenges the > > > user to authenticate, which the user does successfully > (at time t1). > > > So the IdP issues an assertion (at time t2), which the > user transmits > > > to the SP via the browser. > > > > > > At some later time t3, the user presents another > AuthnRequest to the > > > IdP. Since the user already has a security context, the > IdP does not > > > challenge the user to authenticate, but rather issues an > assertion (at > > > time t4), which again the user transmits to the SP. > > > > > > Question: What is the value of AuthnInstant in the second > assertion? > > > > > > Thanks, > > > Tom > > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: saml-dev-unsubscribe@lists.oasis-open.org > > > For additional commands, e-mail: > saml-dev-help@lists.oasis-open.org > > > > > > > Eve Maler +1 425 947 4522 > > Principal Engineer eve.maler @ sun.com > > Business Alliances group Sun Microsystems, Inc. > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: saml-dev-unsubscribe@lists.oasis-open.org > For additional commands, e-mail: saml-dev-help@lists.oasis-open.org > >
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