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Expiry time in Data Model

From: David Chadwick <d.w.chadwick@kent.ac.uk>
Date: Fri, 20 May 2016 12:13:32 +0100
To: Credentials Community Group <public-credentials@w3.org>
Message-ID: <7000e600-3cb2-d937-96ed-49288cbbb747@kent.ac.uk>
Hi Manu

Can ask why a verifiable claim does not have an expiry time as a
mandatory component? Whilst the attribute itself may not expire e.g. a
university degree, nevertheless the electronic representation of the
claim should have an expiry time due to the inherent weaknesses in
cryptographic systems and the need to continually increase key sizes,
improve algorithms etc.

Without an expiry time the issuer may have to keep revocation
information for ever.

regards

David
Received on Friday, 20 May 2016 11:14:04 UTC

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