Printing backups and revocation certificates

Allowing users to have paper backups of their keys would be quite nice. However, this comes with some downsides:

• It would double the size of the current PGP Clean Room iso (~200MB to ~400MB)
• Printer support in Linux is still quite messy at times

Alternatives:

• Export to PDF?
  • Would get around the issue, but leave a copy of the user's private key on the public export disk which is exactly what we are trying to avoid.