Perfect Forward Secrecy isn't possible with PGP, as with Email as the underlying mechanism there is no direct communication between peers. Email is more of a "f

Perfect Forward Secrecy isn't possible with PGP, as with Email as the underlying mechanism there is no direct communication between peers. Email is more of a "fire and forget" mechanism. You can publish your PGP key and get an email from someone you never communicated with before. That can't be done with PFS.