All this talk about trying to gateway client certs has got me thinking
about something I saw last week in the PGP-8.0 docs.

They have this concept of "additional decryption keys". Apparently you
can configure PGP so that even though you are the only one with your
key-pair, when you encrypt a message to someone else, it is co-signed
with this "additional" key. This is for corporate use where the company
always wants to be able to decrypt your email (say, if you leave), but
this additional key only allows decrypt - not encrypt rights - so they
still can't forge (i.e. the authenticity of your cert is not degraded).

Is this some hack, or would such things be possible within SSL? My main
thought is for being able to decrypt S/MIME mail, without needing the
originators cert (same reason: corporate use)

-- 
Cheers

Jason Haar
Information Security Manager, Trimble Navigation Ltd.
Phone: +64 3 9635 377 Fax: +64 3 9635 417
PGP Fingerprint: 7A2E 0407 C9A6 CAF6 2B9F 8422 C063 5EBB FE1D 66D1
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