Quick Destroy

I just had an idea, what if you put your passphrase encrypted private key onto a floppy disk, an use that as a key to open up your encrypted lvm or full disk encryption. The key could then be very long and random generated by /dev/urandom , or by passgen.

You put the floppy disk into the computer as a key to unlock your workstation.

Then if you want to destroy your computer fast just have a neodymium magnet near by and wipe the floppy a few times vigorously. For a fast shutdown destroy have a power switch or near by to your mouse or keyboard with the floppy nearby, grab the floppy and magnet and rub vigorously for 10 seconds.

You could make the key length as long as the floppy can hold so 500KB for a 5.25" B:\ floppy, or 1.44MB for a 3.5" . Or this could just be the passphrase to unlock the private key on your machine. SO instead of something like (puppy monkey baby) (secure horse battery staple) or whatever bullshit their trying to push, your passphrase will be 500KB long or 1.44MB long of random ASCII. They can just build a word combination dictionary brute force attack. Cycle through all 2 word combinations to 10 word combinations from a dictionary and have this run on a parallel computing cluster.

Summary: Power switch next to mouse, next to floppy with passphrase for key to unlock LUKS, Neodymium high field strength magnet nearby (on the floor nearby). Need to destroy hit power switch, grab disk, grab magnet , rub, rub, rub. Have a barricade for your bedroom door to buy you more time if necessary. Your could do this in 3-10 seconds.