I am Alice and I've received signed email from Bob.
I use Web e-Mail client (e.g. GMail) and I see that one of attachements is
I've found option "show original message" and saved contents into
Assuming Bob signed email, how can I verify it from command line ?
(Let's assume Bob uses certified key signed by some of respected authorities - I do not know which, but I suppose that)
(Alice don't want to install email client with appropriate feature, just for just one message)