REBASE add methods to create PGP ASCII pattern matchers to detect ASCII contents
ASCII data+signature test file (gpg --armor --sign icon.png)

This is a single file that contains the signed file itself converted to
base64, as well as the signature.
a test file that is encrypted but not signed (bad idea but we need to test)

This is just to make sure that this format will work properly.  Always sign
your files when you encrypt them!