Ian G wrote, On 2008-12-04 22:58:

> (I discovered some other oddities about S/MIME recently:  revocation 
> seems to be incongruent with key distribution.  I can distribute a new 
> cert only in an S/MIME signed email, but I can't distro any updates to 
> my key situation.  When I lose a key, all the old encrypted email is no 
> longer readable 

Well, of course, without the private key, you cannot decrypt.

> ... which presumably happens when revocation happens as well.  

As long as you have the private key, you can decrypt.  Why would you
presume otherwise?

> I wonder if it denies the signatures as well?  Does this mean 
> digital signing just disappeared because of a key compromise?)

Revocation information includes a revocation date.  After a cert has
been revoked, the validity of signatures involves determining if they
were made before or after the revocation date.
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