On Tue, 19 Jun 2001, anthony moore wrote:
> Does anyone use any type of e-mail encryption for their entire company. I
> have been asked to implement some type of program whereby all the e-mail
the
> is sent out is encrypted. Is this possible? I know that you can encrypt
> between users that have one anothers' public keys but can you encrypt
> anything that you send to those that don't even use encryption?
Smartass answer: use rot13.
Serious answer: can't think of any way to do it. Using a different
symmetric key for each individual recipient doesn't scale very well, and
using the same key for some or all is just a fancy variant of rot13. Can
impress a PHM, but doesn't give extra security.
Question: Perhaps you mean signature instead of encryption? Signature
doesn't hide the message, it just lets the recipients check that you
sent it yourself and it wasn't altered along the way. And unlike
encryption, you don't need to know everyone's public key, and they don't
need to know yours either unless they want to check your signature (in
which case they probably have it already).
--
"Someone approached me and asked me to teach a javascript course. I was
about to decline, saying that my complete ignorance of the subject made
me unsuitable, then I thought again, that maybe it doesn't, as driving
people away from it is a desirable outcome." --Me
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=9121&t=9109
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