Privacy With a 4096 Bit RSA Key — Offline, On Paper

HavanaF writes "Online backup is practical, but can it offer any privacy? The Dutch security company Safeberg developed an Offline Private Key Protocol, with an asymmetric key scheme. The protocol demands that the private (decryption) key be stored away from the 'source' computer, which presumably is 'too vulnerable.' The catch is that the private key needs to be fairly large to be secure: a 4,096-bit RSA key should suffice for some years. But how to store an 800-character key offline? Safeberg introduces a machine readable paper key, with the 4k-bit key crammed in a giant 2D Datamatrix barcode. This video on key strength tells the story."

Comments

Re:How is this any more secure

[Tuoqui]

Why not store it on a USB key... It's much easier or burn it to a blank CD. If you dont need to store it for 1000 years, in which case you might have a better luck storing it by chipping it into stone.