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<TITLE>Re: Attestation</TITLE>
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<FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>It would seem preferable for the verifier to simply specify an arbitrary period of validity at the time of signing as there are likely to be more than just two cases.<BR>
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--brian<BR>
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On 4/5/07 9:13 AM, "Johannes Ernst" <jernst+openid.net@netmesh.us> wrote:<BR>
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</SPAN></FONT><BLOCKQUOTE><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>There seem to be at least two variations of attestation if we differentiate by how quickly the underlying statement (claim, ...) may change. E.g.<BR>
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1. long-term: X is a citizen of country Y. If it changes at all, it takes years.<BR>
2. short-term: X is in the same room with me. It changes minute by minute.<BR>
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In the first case, we can do things like sign a claim and show that signed claim every time somebody asks. In the second, we might have to ask the asserting party in real time?<BR>
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