Using signing in a group environment

[Mark H. Wood]

On Wed, 16 May 2001, Brian Rectanus wrote:
> I would like to create a secret key for our group here at work so that
> we can send out signed email.  What would be the best way of doing this
> so that when a group member leaves, they would not be able to continue
> to send signed email?

Well, unless there is some compelling reason to share a single key, the
*best* way is to give each member a separate key.  If a member leaves, he
can continue to send signed email, but since you know it is from a
nonmember (the signature *proves* that) you can ignore it.  If this is not
sufficient, explaining your need more thoroughly may elicit a better
answer.

-- 
Mark H. Wood, Lead System Programmer   mwood@IUPUI.Edu
Make a good day.