Key encryption

ashoksahara · 02-20-2014, 03:05 AM

I am fresher to the kernel level things.....i want to encrypt the keystrokes...can anybody tell me how to do that???

linosaurusroot · 02-24-2014, 11:25 AM

Do you mean encrypt between the keyboard and the computer so that your keyboard cable does not disclose compromising emanations? That's mostly a hardware problem requiring a new keyboard.
https://www.schneier.com/blog/archiv...ly_eavesd.html

You could get the keyboard scan codes to change in an encrypted manner while you are typing.
http://cryptocoinupdates.com/input-o...board-project/

Obviously encrypting the keystrokes in a way that doesn't change amounts to only a monalphabetic substitution that os broken quickly by methods such as counting frequency and counting neighbours.

szboardstretcher · 02-24-2014, 11:32 AM

I remember an article about capturing keystrokes based on sound. And on phones they can tell what you are typing by the angle and rotation.

linosaurusroot · 02-24-2014, 11:35 AM

If someone is obtaining your keystrokes by sound then encryption will not help. You will need to exclude listening devices from the area. That probably requires being deep inside a building far from windows.

szboardstretcher · 02-24-2014, 11:37 AM

Or have a loop of random keyboard sounds playing instead of a white noise generator.