Server-Aided Signing

This was posted to the MASS BoF mail list.  I think it will be interesting 
to members of this list too.
Russ

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[snip]

For those who want to see research into automated S/MIME signing, I'd would
recommend the following document:
 http://sconce.ics.uci.edu/sucses/publications/sas_ndss02.pdf