Let's say I have a text field somewhere (i.e. an interactive user submitted text field on a PHP script, or a console application. Basically anything that accepts user input.)
How can I detect if said text field contains only a PGP encrypted/signed message? I could just fingerprint the
BEGIN PGP ENCRYPTED MESSAGE header/footer but I was hoping there was a more accurate solution.
I wouldn't need to decrypt said message as I wouldn't control the private key, I just need to check if the message is a PGP encrypted message in the proper format, so to speak.