[cabfpub] .well-known and re-directs

Jeremy Rowley jeremy.rowley at digicert.com
Tue Jul 18 11:35:30 MST 2017

We recently encountered a reoccurring scenario while using .well-known to
validate a certificate. The customer is trying to validate basedomain.com
using http://basedomain.com/.well-known/pki-validation/[page
<http://basedomain.com/.well-known/pki-validation/%5bpage> ]. However, the
server redirects this to
<https://www.basedomain.com/.well-known.pki-valdiation/%5bpage> ]  Because
basedomain.com cannot be used to verify www.basedomain.com
<http://www.basedomain.com> , the validation fails.  Is this the correct
result? Or is a returned random value through a re-direct sufficient to
verify the base domain? 

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